2003 Western Star 4900SA Engine Parts

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Essential Engine Parts for 2003 Western Star 4900SAs

Dorman – HD Solutions – Oil Temp/Pressure Sensor (Part No.904-7109)

Oil Temp/Pressure Sensor

from

$228.99
This engine oil pressure sensor is designed to match the function of an original sensor on specified vehicles. It is engineered to help accurately monitor oil pressure when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this engine oil pressure sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help accurately monitor oil pressure when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
See More

Rotomaster – Rotomaster HD (Part No.A1420107N)

Rotomaster HD

from

$1921.99
Rotomaster Heavy-Duty Turbochargers are engineered to meet the extreme performance demands of commercial and industrial fleets. Built to OE specifications and triple balanced for precision, each unit delivers consistent power, improved fuel efficiency, and long-term durability. Designed for easy, direct-fit installation, Rotomaster turbochargers help fleet managers minimize downtime and extend vehicle service life even under the harshest operating conditions.As turbocharger specialists, Rotomaster brings deep expertise to every unit. Rotomaster¿s technical support team is on-call to assist with installation, troubleshooting, and diagnostics, keeping your fleet moving with minimal downtime.With proven reliability and an industry-leading warranty, Rotomaster turbochargers deliver the performance and peace of mind your operation depends on.

Product Features:
  • Triple Balanced: Compressor wheels, turbine shafts, and rotating assemblies are dynamically balanced in three stages. Ensures smoother operation, reduces vibration, and extends turbo life under heavy load conditions.
  • 100% Brand-New Parts: Built exclusively with 100% all-new components. Delivers consistent, reliable performance built to withstand the rigors of demanding heavy-duty applications.
  • OE-Matching Fit and Function: Designed to meet or exceed original equipment (OE) standards. Provides a precise fit and dependable durability, making installation seamless and maintenance minimal.
  • Installation-Ready with Pre-Lube: Supplied with a pre-lube syringe. Protects the turbo during initial startup, promoting a smooth installation and immediate performance reliability.
  • Manufactured with 100% new components and tested to ensure trouble-free operation
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Rotomaster – Rotomaster HD (Part No.H1600101N)

Rotomaster HD

from

$1225.99
Rotomaster Heavy-Duty Turbochargers are engineered to meet the extreme performance demands of commercial and industrial fleets. Built to OE specifications and triple balanced for precision, each unit delivers consistent power, improved fuel efficiency, and long-term durability. Designed for easy, direct-fit installation, Rotomaster turbochargers help fleet managers minimize downtime and extend vehicle service life even under the harshest operating conditions. As turbocharger specialists, Rotomaster brings deep expertise to every unit. Rotomaster’s technical support team is on-call to assist with installation, troubleshooting, and diagnostics, keeping your fleet moving with minimal downtime. With proven reliability and an industry-leading warranty, Rotomaster turbochargers deliver the performance and peace of mind your operation depends on.

Product Features:
  • Triple Balanced: Compressor wheels, turbine shafts, and rotating assemblies are dynamically balanced in three stages. Ensures smoother operation, reduces vibration, and extends turbo life under heavy load conditions.
  • 100% Brand-New Parts: Built exclusively with 100% all-new components. Delivers consistent, reliable performance built to withstand the rigors of demanding heavy-duty applications.
  • OE-Matching Fit and Function: Designed to meet or exceed original equipment (OE) standards. Provides a precise fit and dependable durability, making installation seamless and maintenance minimal.
  • Installation-Ready with Pre-Lube: Supplied with a pre-lube syringe. Protects the turbo during initial startup, promoting a smooth installation and immediate performance reliability.
  • Manufactured with 100% new components and tested to ensure trouble-free operation
See More

Rotomaster – Rotomaster HD (Part No.A1470106N)

Rotomaster HD

from

$2638.00
Rotomaster Heavy-Duty Turbochargers are engineered to meet the extreme performance demands of commercial and industrial fleets. Built to OE specifications and triple balanced for precision, each unit delivers consistent power, improved fuel efficiency, and long-term durability. Designed for easy, direct-fit installation, Rotomaster turbochargers help fleet managers minimize downtime and extend vehicle service life even under the harshest operating conditions.As turbocharger specialists, Rotomaster brings deep expertise to every unit. Rotomaster¿s technical support team is on-call to assist with installation, troubleshooting, and diagnostics, keeping your fleet moving with minimal downtime.With proven reliability and an industry-leading warranty, Rotomaster turbochargers deliver the performance and peace of mind your operation depends on.

Product Features:
  • Triple Balanced: Compressor wheels, turbine shafts, and rotating assemblies are dynamically balanced in three stages. Ensures smoother operation, reduces vibration, and extends turbo life under heavy load conditions.
  • 100% Brand-New Parts: Built exclusively with 100% all-new components. Delivers consistent, reliable performance built to withstand the rigors of demanding heavy-duty applications.
  • OE-Matching Fit and Function: Designed to meet or exceed original equipment (OE) standards. Provides a precise fit and dependable durability, making installation seamless and maintenance minimal.
  • Installation-Ready with Pre-Lube: Supplied with a pre-lube syringe. Protects the turbo during initial startup, promoting a smooth installation and immediate performance reliability.
  • Manufactured with 100% new components and tested to ensure trouble-free operation
See More

Dorman – HD Solutions – Crankshaft Position Sensor (Part No.904-7021)

Crankshaft Position Sensor

from

$134.99
This engine crankshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this engine crankshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
See More

Dorman – HD Solutions – Crankshaft Position Sensor (Part No.904-7024)

Crankshaft Position Sensor

from

$186.99
This engine crankshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this engine crankshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
See More

Dorman – HD Solutions – Crankshaft Position Sensor (Part No.904-7247)

Crankshaft Position Sensor

from

$83.99
This engine crankshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this engine crankshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
See More

Dorman – HD Solutions – Crankshaft Position Sensor (Part No.904-7020)

Crankshaft Position Sensor

from

$167.99
This engine crankshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this engine crankshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
See More

Carquest Premium – Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10136)

Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack

from

$5.99
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.

Product Features:
  • Provides proper seal to ensure leak prevention
  • Stops engine blow by
  • High quality construction
  • Meets all OEM specifications
See More

Carquest Premium – HD Engine Oil Filler Plug (Part No.10153)

HD Engine Oil Filler Plug

from

$19.49
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.

Product Features:
  • Provides proper seal to ensure leak prevention
  • Stops engine blow by
  • High quality construction
  • Meets all OEM specifications
See More

Dorman – HD Solutions – Engine Oil Pan: Direct Fit, Steel, Sump, 44 Quart (Part No.264-6005)

Engine Oil Pan: Direct Fit, Steel, Sump, 44 Quart

from

$1043.00
Oil pan leaking This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

Dorman – HD Solutions – Engine Oil Pan: Direct Fit, Fiberglass, Sump, 40 Quart (Part No.264-5002)

Engine Oil Pan: Direct Fit, Fiberglass, Sump, 40 Quart

from

$1034.00
Oil pan leaking This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

Dorman – HD Solutions – Engine Oil Pan: Direct Fit, Steel, Sump, 36 Quart (Part No.264-5006)

Engine Oil Pan: Direct Fit, Steel, Sump, 36 Quart

from

$1483.99
Oil pan leaking This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

Dorman – HD Solutions – Engine Oil Pan: Direct Fit, Fiberglass, Sump, 40 Quart (Part No.264-5097)

Engine Oil Pan: Direct Fit, Fiberglass, Sump, 40 Quart

from

$1749.00
Oil pan leaking This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

Dorman – HD Solutions – Turbocharger Speed Sensor (Part No.904-7240)

Turbocharger Speed Sensor

from

$250.99
This turbocharger speed sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this turbocharger speed sensor is designed to match the fit and function of the original sensor on specified vehicles
  • Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
  • Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Dorman – HD Solutions – Turbocharger Speed Sensor (Part No.904-7111)

Turbocharger Speed Sensor

from

$288.99
This turbocharger speed sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this turbocharger speed sensor is designed to match the fit and function of the original sensor on specified vehicles
  • Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
  • Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Gates – Green Stripe Ring Retained Straight Turbocharger Hose (Part No.26203)

Green Stripe Ring Retained Straight Turbocharger Hose

from

$108.99
Made for turbocharged Class 8 and heavy-duty diesel engines. Multi-hump design isolates vibration and absorbs rotational shock. Depending on application, hose is engineered with three or four rings to maintain design integrity.

Product Features:
  • Four-layer silicone construction with aramid fiber reinforcement for maximum durability
  • Meets or exceeds OEM specifications.
  • Temperature range: -60 Deg. F to +500 Deg. F (+51 Deg. C to +260 Deg. C)
See More

Gates – Green Stripe Ring Retained Straight Turbocharger Hose (Part No.26204)

Green Stripe Ring Retained Straight Turbocharger Hose

from

$162.99
Made for turbocharged Class 8 and heavy-duty diesel engines. Multi-hump design isolates vibration and absorbs rotational shock. Depending on application, hose is engineered with three or four rings to maintain design integrity.

Product Features:
  • Four-layer silicone construction with aramid fiber reinforcement for maximum durability
  • Meets or exceeds OEM specifications.
  • Temperature range: -60 Deg. F to +500 Deg. F (+51 Deg. C to +260 Deg. C)
See More

Rotomaster – Rotomaster HD (Part No.H1560301N)

Rotomaster HD

from

$214.99
Rotomaster Turbocharger Service Kits deliver a comprehensive, cost-effective solution for restoring turbo performance without replacing the full turbocharger. Designed for preventative maintenance and minor repairs, each kit includes the essential wear components required for a dependable rebuild, provided no internal damage exists. Built with O.E.-grade, direct-fit parts, these kits ensure accurate fitment, easy installation, and lasting durability. Installation should be performed using proper balancing equipment to ensure optimal performance. Ideal for professional technicians and experienced enthusiasts with the right tools, Rotomaster kits help reduce downtime, lower repair costs, and extend the life of your turbocharger. Perfect for diesel engines, commercial fleets, and passenger vehicles.

Product Features:
  • All-in-One Convenience – Includes all serviceable wear components in a single kit for efficient turbocharger maintenance
  • All-in-One Convenience – Includes all serviceable wear components in a single kit for efficient turbocharger maintenanceá
  • Cost-Effective Repair – Avoids the expense of replacing the entire turbocharger by restoring performance with key service parts
  • Cost-Effective Repair – Avoids the expense of replacing the entire turbocharger by restoring performance with key service partsá
  • Built to Last – Supplied with only O.E.-grade components for long-term durability and reliability
  • Built to Last – Supplied with only O.E.-grade components for long-term durability and reliabilityá
  • Easy Installation – Direct-fit parts ensure a precise, hassle-free rebuild.
  • Easy Installation – Direct-fit parts ensure a precise, hassle-free rebuild.á
  • Direct O.E. replacement
See More

Rotomaster – Rotomaster HD (Part No.A1420307N)

Rotomaster HD

from

$142.99
Rotomaster Turbocharger Service Kits deliver a comprehensive, cost-effective solution for restoring turbo performance without replacing the full turbocharger. Designed for preventative maintenance and minor repairs, each kit includes the essential wear components required for a dependable rebuild, provided no internal damage exists. Built with O.E.-grade, direct-fit parts, these kits ensure accurate fitment, easy installation, and lasting durability. Installation should be performed using proper balancing equipment to ensure optimal performance. Ideal for professional technicians and experienced enthusiasts with the right tools, Rotomaster kits help reduce downtime, lower repair costs, and extend the life of your turbocharger. Perfect for diesel engines, commercial fleets, and passenger vehicles.

Product Features:
  • All-in-One Convenience – Includes all serviceable wear components in a single kit for efficient turbocharger maintenance
  • All-in-One Convenience – Includes all serviceable wear components in a single kit for efficient turbocharger maintenanceá
  • Cost-Effective Repair – Avoids the expense of replacing the entire turbocharger by restoring performance with key service parts
  • Cost-Effective Repair – Avoids the expense of replacing the entire turbocharger by restoring performance with key service partsá
  • Built to Last – Supplied with only O.E.-grade components for long-term durability and reliability
  • Built to Last – Supplied with only O.E.-grade components for long-term durability and reliabilityá
  • Easy Installation – Direct-fit parts ensure a precise, hassle-free rebuild.
  • Easy Installation – Direct-fit parts ensure a precise, hassle-free rebuild.á
  • Direct O.E. replacement
See More

Upgrade your 2003 Western Star 4900SA with Top-Quality Engine Parts

When it comes to maintaining or upgrading your 2003 Western Star 4900SA, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Western Star or enhancing its overall performance, Engine Parts are key to keeping your 4900SA functioning at its best. At Advance Auto Parts, we offer a wide selection of 28 Engine Parts for the 2003 Western Star 4900SA, designed to meet your needs without breaking the bank. From Engine Block replacements to Intercoolers upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Engine Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Engine Parts for your 2003 Western Star 4900SA at great prices. Our Engine Parts inventory for this model ranges from just $5.99 to $3,118.99, with an average price of $808.08. Our 28 Engine Parts in stock come from 5 trusted brands, so you’re sure to find the right part for your 2003 Western Star 4900SA without overspending.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Engine Part upgrades. Explore related part types like Batteries and Chargers, Fluids and Chemicals and more to make sure your 2003 Western Star 4900SA is always ready to roll. We’re committed to providing you with everything you need to keep your 4900SA in top shape, all in one place. Start shopping confidently below for your 2003 Western Star 4900SA!

Best-Selling Engine Blocks for 2003 Western Star 4900SAs

Enhance the driving experience in your Western Star with 2 quality Engine Block components, starting at $5.99.

Carquest Premium – Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10136)

Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack

from

$5.99
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.

Product Features:
  • Provides proper seal to ensure leak prevention
  • Stops engine blow by
  • High quality construction
  • Meets all OEM specifications
See More

Carquest Premium – HD Engine Oil Filler Plug (Part No.10153)

HD Engine Oil Filler Plug

from

$19.49
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.

Product Features:
  • Provides proper seal to ensure leak prevention
  • Stops engine blow by
  • High quality construction
  • Meets all OEM specifications
See More

Most Popular 2003 Western Star 4900SA Intercoolers

Customize your Western Star with 2 Intercoolers products like Intercooler Connection Hoses, all priced under $162.99.

Gates – Green Stripe Ring Retained Straight Turbocharger Hose (Part No.26204)

Green Stripe Ring Retained Straight Turbocharger Hose

from

$162.99
Made for turbocharged Class 8 and heavy-duty diesel engines. Multi-hump design isolates vibration and absorbs rotational shock. Depending on application, hose is engineered with three or four rings to maintain design integrity.

Product Features:
  • Four-layer silicone construction with aramid fiber reinforcement for maximum durability
  • Meets or exceeds OEM specifications.
  • Temperature range: -60 Deg. F to +500 Deg. F (+51 Deg. C to +260 Deg. C)
See More

Gates – Green Stripe Ring Retained Straight Turbocharger Hose (Part No.26203)

Green Stripe Ring Retained Straight Turbocharger Hose

from

$108.99
Made for turbocharged Class 8 and heavy-duty diesel engines. Multi-hump design isolates vibration and absorbs rotational shock. Depending on application, hose is engineered with three or four rings to maintain design integrity.

Product Features:
  • Four-layer silicone construction with aramid fiber reinforcement for maximum durability
  • Meets or exceeds OEM specifications.
  • Temperature range: -60 Deg. F to +500 Deg. F (+51 Deg. C to +260 Deg. C)
See More

Top Picks for 2003 Western Star 4900SA Engine Switches, Sensors and Relays

Upgrade Western Star 4900SAs with top-quality Engine Switches, Sensors and Relays parts, including 3 OEM and aftermarket selections for your 2003 model.

Dorman – HD Solutions – Oil Temp/Pressure Sensor (Part No.904-7109)

Oil Temp/Pressure Sensor

from

$228.99
This engine oil pressure sensor is designed to match the function of an original sensor on specified vehicles. It is engineered to help accurately monitor oil pressure when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this engine oil pressure sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help accurately monitor oil pressure when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
See More

Dorman – HD Solutions – Crankshaft Position Sensor (Part No.904-7024)

Crankshaft Position Sensor

from

$186.99
This engine crankshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this engine crankshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
See More

Dorman – HD Solutions – Crankshaft Position Sensor (Part No.904-7247)

Crankshaft Position Sensor

from

$83.99
This engine crankshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.

Product Features:
  • Direct replacement – this engine crankshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
  • Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
See More

In-Demand Oil Pans for 2003 Western Star 4900SAs

Select from 5 premium Oil Pans parts for your 2003 Western Star 4900SA, with prices ranging from $1,034.00 to $1,749.00.

Dorman – HD Solutions – Engine Oil Pan: Direct Fit, Fiberglass, Sump, 40 Quart (Part No.264-5097)

Engine Oil Pan: Direct Fit, Fiberglass, Sump, 40 Quart

from

$1749.00
Oil pan leaking This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

Dorman – HD Solutions – Engine Oil Pan: Direct Fit, Steel, Sump, 36 Quart (Part No.264-5006)

Engine Oil Pan: Direct Fit, Steel, Sump, 36 Quart

from

$1483.99
Oil pan leaking This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

Dorman – HD Solutions – Engine Oil Pan: Direct Fit, Steel, Sump, 38 Quart (Part No.264-5054)

Engine Oil Pan: Direct Fit, Steel, Sump, 38 Quart

from

$1269.99
Oil pan leaking This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

Dorman – HD Solutions – Engine Oil Pan: Direct Fit, Steel, Sump, 44 Quart (Part No.264-6005)

Engine Oil Pan: Direct Fit, Steel, Sump, 44 Quart

from

$1043.00
Oil pan leaking This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

Dorman – HD Solutions – Engine Oil Pan: Direct Fit, Fiberglass, Sump, 40 Quart (Part No.264-5002)

Engine Oil Pan: Direct Fit, Fiberglass, Sump, 40 Quart

from

$1034.00
Oil pan leaking This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

Most Sold 2003 Western Star 4900SA Turbochargers

Explore our best-selling Western Star parts for the 2003 4900SA among 16 OEM and aftermarket options starting from $142.99.

Dorman – HD Solutions – Turbocharger Speed Sensor (Part No.904-7240)

Turbocharger Speed Sensor

from

$250.99
This turbocharger speed sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this turbocharger speed sensor is designed to match the fit and function of the original sensor on specified vehicles
  • Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
  • Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

OE-TurboPower – HD New Turbocharger (Part No.D95080003N)

HD New Turbocharger

from

$3118.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.
See More

OE-TurboPower – HD New Turbocharger (Part No.D95080004N)

HD New Turbocharger

from

$2700.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.
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Rotomaster – Rotomaster HD (Part No.A1420107N)

Rotomaster HD

from

$1921.99
Rotomaster Heavy-Duty Turbochargers are engineered to meet the extreme performance demands of commercial and industrial fleets. Built to OE specifications and triple balanced for precision, each unit delivers consistent power, improved fuel efficiency, and long-term durability. Designed for easy, direct-fit installation, Rotomaster turbochargers help fleet managers minimize downtime and extend vehicle service life even under the harshest operating conditions.As turbocharger specialists, Rotomaster brings deep expertise to every unit. Rotomaster¿s technical support team is on-call to assist with installation, troubleshooting, and diagnostics, keeping your fleet moving with minimal downtime.With proven reliability and an industry-leading warranty, Rotomaster turbochargers deliver the performance and peace of mind your operation depends on.

Product Features:
  • Triple Balanced: Compressor wheels, turbine shafts, and rotating assemblies are dynamically balanced in three stages. Ensures smoother operation, reduces vibration, and extends turbo life under heavy load conditions.
  • 100% Brand-New Parts: Built exclusively with 100% all-new components. Delivers consistent, reliable performance built to withstand the rigors of demanding heavy-duty applications.
  • OE-Matching Fit and Function: Designed to meet or exceed original equipment (OE) standards. Provides a precise fit and dependable durability, making installation seamless and maintenance minimal.
  • Installation-Ready with Pre-Lube: Supplied with a pre-lube syringe. Protects the turbo during initial startup, promoting a smooth installation and immediate performance reliability.
  • Manufactured with 100% new components and tested to ensure trouble-free operation
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OE-TurboPower – HD Reman Turbocharger (Part No.D95080067R)

HD Reman Turbocharger

from

$1310.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.

Product Features:
  • Every unit is completely disassembled, and all components are inspected for quality assurance which ensures that problematic areas are identified and corrected.
  • Balancing is performed at both the component level and at the cartridge level
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OE-TurboPower – HD Reman Turbocharger (Part No.D95080063R)

HD Reman Turbocharger

from

$1301.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.

Product Features:
  • Every unit is completely disassembled, and all components are inspected for quality assurance which ensures that problematic areas are identified and corrected.
  • Balancing is performed at both the component level and at the cartridge level
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OE-TurboPower – HD New Turbocharger (Part No.D92080237N)

HD New Turbocharger

from

$1063.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.
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OE-TurboPower – HD Reman Turbocharger (Part No.D91080025R)

HD Reman Turbocharger

from

$1059.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.

Product Features:
  • Every unit is completely disassembled, and all components are inspected for quality assurance which ensures that problematic areas are identified and corrected.
  • Balancing is performed at both the component level and at the cartridge level
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OE-TurboPower – HD Reman Turbocharger (Part No.D91080008R)

HD Reman Turbocharger

from

$883.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.

Product Features:
  • Every unit is completely disassembled, and all components are inspected for quality assurance which ensures that problematic areas are identified and corrected.
  • Balancing is performed at both the component level and at the cartridge level
See More

OE-TurboPower – HD New Turbocharger (Part No.D91080016N)

HD New Turbocharger

from

$878.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.
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OE-TurboPower – HD Reman Turbocharger (Part No.D95080175R)

HD Reman Turbocharger

from

$864.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.

Product Features:
  • Every unit is completely disassembled, and all components are inspected for quality assurance which ensures that problematic areas are identified and corrected.
  • Balancing is performed at both the component level and at the cartridge level
See More

OE-TurboPower – HD Reman Turbocharger (Part No.D91080006R)

HD Reman Turbocharger

from

$853.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.

Product Features:
  • Every unit is completely disassembled, and all components are inspected for quality assurance which ensures that problematic areas are identified and corrected.
  • Balancing is performed at both the component level and at the cartridge level
See More

OE-TurboPower – HD New Turbocharger (Part No.D95080175N)

HD New Turbocharger

from

$792.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.
See More

OE-TurboPower – HD New Turbocharger (Part No.D91080008N)

HD New Turbocharger

from

$772.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.
See More

OE-TurboPower – HD New Turbocharger (Part No.D91080006N)

HD New Turbocharger

from

$758.99
OE-TurboPower Turbochargers are OE-Quality, precisely calibrated, sustainably manufactured and new, high-performing turbochargers designed to meet the durability, reliability and technology demands of complex engines. Turbochargers are a big deal at BBB Industries. We are deeply invested in the turbo market and currently supply OE manufacturers with turbochargers for a wide range of diesel and gasoline engines for passenger cars, light trucks, medium-duty, and heavy-duty trucks. We understand the complexity of these systems. We know the importance and intricate details of OE fit, form, and function.With strict adherence to OE-quality standards, a BBB Industries premium turbochargers provide optimum performance that you can count on. Knowing this and knowing the stringent standards we apply to every part that leaves our facilities, feel confident putting your trust in an OE-TurboPower turbocharger from BBB Industries.OE-TurboPower turbochargers come standard with kits that include all the gaskets and hardware for all Class 1-3 applications that are required for a complete, quick, and easy installation.
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Rotomaster – Rotomaster HD (Part No.A1420307N)

Rotomaster HD

from

$142.99
Rotomaster Turbocharger Service Kits deliver a comprehensive, cost-effective solution for restoring turbo performance without replacing the full turbocharger. Designed for preventative maintenance and minor repairs, each kit includes the essential wear components required for a dependable rebuild, provided no internal damage exists. Built with O.E.-grade, direct-fit parts, these kits ensure accurate fitment, easy installation, and lasting durability. Installation should be performed using proper balancing equipment to ensure optimal performance. Ideal for professional technicians and experienced enthusiasts with the right tools, Rotomaster kits help reduce downtime, lower repair costs, and extend the life of your turbocharger. Perfect for diesel engines, commercial fleets, and passenger vehicles.

Product Features:
  • All-in-One Convenience – Includes all serviceable wear components in a single kit for efficient turbocharger maintenance
  • All-in-One Convenience – Includes all serviceable wear components in a single kit for efficient turbocharger maintenanceá
  • Cost-Effective Repair – Avoids the expense of replacing the entire turbocharger by restoring performance with key service parts
  • Cost-Effective Repair – Avoids the expense of replacing the entire turbocharger by restoring performance with key service partsá
  • Built to Last – Supplied with only O.E.-grade components for long-term durability and reliability
  • Built to Last – Supplied with only O.E.-grade components for long-term durability and reliabilityá
  • Easy Installation – Direct-fit parts ensure a precise, hassle-free rebuild.
  • Easy Installation – Direct-fit parts ensure a precise, hassle-free rebuild.á
  • Direct O.E. replacement
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FAQs for 2003 Western Star 4900SA Engine Parts

Which Engine Parts are best-sellers for 2003 Western Star 4900SAs?

Out of 28 Engine Parts that fit 2003 Western Star 4900SAs, the following parts are the top sellers:

What’s the price range for 2003 Western Star 4900SA Engine Parts?

Engine Part prices for the 2003 Western Star 4900SA start at $5.99 and go up to $3,118.99 for the most premium parts.

What’s the average price of a Engine Part for a 2003 Western Star 4900SA?

The average price for Engine Parts for the 2003 Western Star 4900SA is $808.08. Keep in mind the variety of part types within our Engine Part category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Engine Parts for other Western Star 4900SA model years?

Yes, we currently carry Engine Parts for 19 model years of Western Star 4900SAs between 2002 and 2022. Engine Parts are bought most frequently for the following model years: 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, and 2010.

What are the cheapest Engine Parts for my 2003 Western Star 4900SA?

The cheapest 2003 Western Star 4900SA Engine Parts we carry in stock are:

What types of Engine Parts do you sell for my 2003 Western Star 4900SA?

As of 3/1/26, these are some of the most in-demand types of Engine Parts for a 2003 Western Star 4900SA:

Can I get help with 2003 Western Star 4900SA Engine Part orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Western Star Engine Parts and more.

What is your return policy for Western Star 4900SA Engine Parts?

Advance Auto Parts keeps returns simple. For new Western Star 4900SA Engine Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.