2003 Western Star 4900SA Fuel and Emissions Systems

Essential Fuel and Emissions Systems for 2003 Western Star 4900SAs

Carquest Premium – Fuel/Water Separator Spin-on with Drain, Oval Sensor Port and Reusable Sensor (Part No.86422)

Fuel/Water Separator Spin-on with Drain, Oval Sensor Port and Reusable Sensor

from

$59.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest spin-on fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Contains Sensor Port Thread: M14 x 2.0;Standpipe
  • Includes Standpipe. Sensor Port Thread: M14 x 2.0
  • CAUTION: Furnished D-Ring must be installed on post for seal. NOT Interchangeable with 86604.
See More

Carquest Premium – Fuel/Water Separator Spin-on with Drain (Part No.86412)

Fuel/Water Separator Spin-on with Drain

from

$84.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest spin-on fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Application engineered media which aids in stripping water in diesel fuels
  • Patent pending drain, metal end caps, which hold media in place
  • Rust resistant can, ensuring no leakage from inside
  • Made in USA
  • Includes Integral Post Seal. Sensor Port Thread: 1/2-20
See More

Carquest Premium – Extra-Large, Extended-Mileage Fuel/Water Separator Element (Part No.86651XE)

Extra-Large, Extended-Mileage Fuel/Water Separator Element

from

$44.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Made in USA
See More

Dorman – HD Solutions – Heavy Duty Exhaust Gas Recirculation Cooler Gasket Kit (Part No.904-5007)

Heavy Duty Exhaust Gas Recirculation Cooler Gasket Kit

from

$102.99
Tight seals are essential to proper EGR cooler operation. This EGR cooler gasket kit contains all the gaskets and seals required to ensure a solid repair. Made of quality materials, this kit is a direct replacement for original equipment parts.

Product Features:
  • Direct replacement – this exhaust gas recirculation (EGR) gasket kit matches the original equipment gaskets for this vehicle application.
  • Durable construction – the components in this EGR cooler gasket kit are made of quality materials for a secure fit and excellent durability
  • Convenient solution – the gaskets in this kit should be replaced whenever repairs are performed on the EGR cooler, intake manifold or oil cooler
  • Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life
See More

Dorman – HD Solutions – Heavy Duty Exhaust Gas Recirculation Cooler Kit (Part No.904-5036)

Heavy Duty Exhaust Gas Recirculation Cooler Kit

from

$1712.99
This EGR cooler has been engineered to match the fit and function of the original EGR cooler on specific vehicle years, makes and models. It has undergone rigorous testing and OEM benchmarking to ensure reliability.

Product Features:
  • Direct replacement – this EGR cooler is made to match the fit and function of the original part on specific applications.
  • Rigorously tested – heat transfer testing, burst testing and vehicle try-on testing ensures fit and reliability
  • Durable construction – this part is made from quality materials to ensure reliable performance and a long service life
  • 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 – Heavy Duty Exhaust Gas Recirculation Cooler Gasket Kit (Part No.904-5009)

Heavy Duty Exhaust Gas Recirculation Cooler Gasket Kit

from

$239.99
Tight seals are essential to proper EGR cooler operation. This EGR cooler gasket kit contains all the gaskets and seals required to ensure a solid repair. Made of quality materials, this kit is a direct replacement for original equipment parts.

Product Features:
  • Direct replacement – this exhaust gas recirculation (EGR) gasket kit matches the original equipment gaskets for this vehicle application.
  • Durable construction – the components in this EGR cooler gasket kit are made of quality materials for a secure fit and excellent durability
  • Convenient solution – the gaskets in this kit should be replaced whenever repairs are performed on the EGR cooler, intake manifold or oil cooler
  • Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life
See More

Cardone – Fuel Injector (Part No.2J-506)

Fuel Injector

from

$539.99
CARDONE Remanufactured Fuel Injectors provide an alternative plug and play solution to fuel delivery for diesel applications. All units are flow tested and balanced and replaced with new O-rings and gaskets. Each unit retains OEM duty cycle and pulse width ensuring reliable performance. All units are built to meet or exceed OEM performance, providing a quality product both you and your vehicle can rely on.

Product Features:
  • All gaskets, O-rings and bearings are replaced 100% to ensure optimal performance
  • Each assembled unit is individually calibrated and tested to ensure it meets or exceeds O.E.M. form, fit and function
  • All components are renewed or replaced as necessary to ensure high quality and durability
  • When applicable, improvements based on typical failure modes of original units are incorporated into the design and manufacture of replacement component parts, which translates into longer service life and less down-time for the driver
  • Guaranteed fit and function
  • Meets or exceeds O.E.M. performance
See More

Cardone – Fuel Injector (Part No.2J-702)

Fuel Injector

from

$304.99
CARDONE Remanufactured Fuel Injectors provide an alternative plug and play solution to fuel delivery for diesel applications. All units are flow tested and balanced and replaced with new O-rings and gaskets. Each unit retains OEM duty cycle and pulse width ensuring reliable performance. All units are built to meet or exceed OEM performance, providing a quality product both you and your vehicle can rely on.

Product Features:
  • All gaskets, O-rings and bearings are replaced 100% to ensure optimal performance
  • Each assembled unit is individually calibrated and tested to ensure it meets or exceeds O.E.M. form, fit and function
  • All components are renewed or replaced as necessary to ensure high quality and durability
  • When applicable, improvements based on typical failure modes of original units are incorporated into the design and manufacture of replacement component parts, which translates into longer service life and less down-time for the driver
  • Guaranteed fit and function
  • Meets or exceeds O.E.M. performance
See More

Cardone – Fuel Injector (Part No.2J-703)

Fuel Injector

from

$426.99
CARDONE Remanufactured Fuel Injectors provide an alternative plug and play solution to fuel delivery for diesel applications. All units are flow tested and balanced and replaced with new O-rings and gaskets. Each unit retains OEM duty cycle and pulse width ensuring reliable performance. All units are built to meet or exceed OEM performance, providing a quality product both you and your vehicle can rely on.

Product Features:
  • All gaskets, O-rings and bearings are replaced 100% to ensure optimal performance
  • Each assembled unit is individually calibrated and tested to ensure it meets or exceeds O.E.M. form, fit and function
  • All components are renewed or replaced as necessary to ensure high quality and durability
  • When applicable, improvements based on typical failure modes of original units are incorporated into the design and manufacture of replacement component parts, which translates into longer service life and less down-time for the driver
  • Guaranteed fit and function
  • Meets or exceeds O.E.M. performance
See More

Dorman – HD Solutions – EGR Cooler V-Band Clamp (Part No.904-5154)

EGR Cooler V-Band Clamp

from

$59.99
This exhaust gas recirculation (EGR) cooler clamp is designed to match the fit of the original clamp on specified vehicles and is recommended for replacement during EGR cooler service. It is engineered from stainless steel for reliable service life.

Product Features:
  • Direct replacement – this exhaust gas recirculation (EGR) cooler clamp is designed to match the fit of the original clamp and is recommended for replacement during EGR cooler service.
  • Ideal solution – engineered from stainless steel to withstand extreme heat and to resist corrosion
  • 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 – Heavy Duty EGR Valve (Part No.904-5001)

Heavy Duty EGR Valve

from

$637.99
Our EGR valves include a gasket for a complete repair. Plus, they are designed to withstand extreme heat and carbon build-up for a longer service life.

Product Features:
  • Direct replacement for a proper fit
  • Includes gasket for a tight seal
  • Helps reduce emissions to protect the environment
  • Vehicle try-on testing has been conducted on this part to ensure trouble-free performance
See More

Dorman – HD Solutions – Heavy Duty Exhaust Gas Recirculation Valve (Part No.904-5098)

Heavy Duty Exhaust Gas Recirculation Valve

from

$1092.99
This EGR valve is designed to match the fit and function of the original valve on specified vehicles. Made of quality materials, it is engineered for reliable performance and durability..

Product Features:
  • Direct replacement – this EGR valve is designed to match the fit and function of the original valve on specified vehicles..
  • Ideal solution – this valve is engineered to withstand extreme heat and carbon buildup, and is a reliable replacement for a failed original EGR valve
  • Durable construction – made from quality components to ensure reliable performance and long service life
  • Quality assured – backed by a team of product engineers based in the United States
See More

Carquest Premium – Fuel/Water Separator Spin-on with Drain (Part No.86813)

Fuel/Water Separator Spin-on with Drain

from

$81.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest spin-on fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Application engineered media which aids in stripping water in diesel fuels
  • Patent pending drain, metal end caps, which hold media in place
  • Rust resistant can, ensuring no leakage from inside
  • Made in USA
  • Includes Integral Post Seal
See More

Carquest Premium – Fuel/Water Separator Spin-on with Drain (Part No.86406)

Fuel/Water Separator Spin-on with Drain

from

$41.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest spin-on fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Application engineered media which aids in stripping water in diesel fuels
  • Patent pending drain, metal end caps, which hold media in place
  • Rust resistant can, ensuring no leakage from inside
  • Made in USA
  • Includes Standpipe
  • CAUTION: Furnished D-Ring must be installed on post for seal.
See More

Dorman – HD Solutions – Injector O-Ring Kit (Part No.904-8053)

Injector O-Ring Kit

from

$88.99
The components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles. They are engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged.

Product Features:
  • Direct replacements – the components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles.
  • Ideal solution – engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged
  • 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 – Injector O-Ring Kit (Part No.904-8050)

Injector O-Ring Kit

from

$97.99
The components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles. They are engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged.

Product Features:
  • Direct replacements – the components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles.
  • Ideal solution – engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged
  • 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 – Carquest Diesel Exhaust Fluid Filter for SCR Systems (Part No.96679)

Carquest Diesel Exhaust Fluid Filter for SCR Systems

from

$106.99
Carquest Diesel Exhaust Fluid (DEF) Filters remove contaminants to ensure proper function of your vehicle’s Selective Catalytic Reduction (SCR) system.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Contains Plug and Filter Removal Tool
See More

Carquest Premium – Diesel Exh Fluid Kit (Part No.96877)

Diesel Exh Fluid Kit

from

$317.99
Carquest Diesel Exhaust Fluid (DEF) Filters remove contaminants to ensure proper function of your vehicle’s Selective Catalytic Reduction (SCR) system.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Contains Frost Compensation Membrane, Spray Lubricant, Instruction Sheet
See More

Carquest Premium – Urea Diesel Exhaust Fluid Filter (Part No.94179)

Urea Diesel Exhaust Fluid Filter

from

$104.99
Carquest Diesel Exhaust Fluid (DEF) Filters remove contaminants to ensure proper function of your vehicle’s Selective Catalytic Reduction (SCR) system.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
See More

Upgrade your 2003 Western Star 4900SA with Top-Quality Fuel and Emissions Systems

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, Fuel and Emissions Systems are key to keeping your 4900SA functioning at its best. At Advance Auto Parts, we offer a wide selection of 16 Fuel and Emissions Systems for the 2003 Western Star 4900SA, designed to meet your needs without breaking the bank. From Diesel Fuel Injector replacements to Exhaust Gas Recirculation (EGR) Parts 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 Fuel and Emissions Systems for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Fuel and Emissions Systems for your 2003 Western Star 4900SA at great prices. Our Fuel and Emissions Systems inventory for this model ranges from just $41.99 to $1,712.99, with an average price of $263.29. Our 16 Fuel and Emissions Systems in stock come from 3 trusted brands, so you’re sure to find the right part for your 2003 Western Star 4900SA without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 Western Star 4900SA, we stock popular OEM and aftermarket Fuel and Emissions Systems from top names like Carquest Premium, and more. Carquest Premium Fuel and Emissions Systems start at just $41.99 and boast an impressive 4 stars average rating from customers. With 4 customer reviews and counting, our 2003 Western Star 4900SA Fuel and Emissions Systems have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Fuel and Emissions System 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 Diesel Fuel Injectors for 2003 Western Star 4900SAs

Enhance the driving experience in your Western Star with 1 quality Diesel Fuel Injector components, starting at $106.99.

Carquest Premium – Carquest Diesel Exhaust Fluid Filter for SCR Systems (Part No.96679)

Carquest Diesel Exhaust Fluid Filter for SCR Systems

from

$106.99
Carquest Diesel Exhaust Fluid (DEF) Filters remove contaminants to ensure proper function of your vehicle’s Selective Catalytic Reduction (SCR) system.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Contains Plug and Filter Removal Tool
See More

Most Popular 2003 Western Star 4900SA Exhaust Gas Recirculation (EGR) Parts

Customize your Western Star with 5 Exhaust Gas Recirculation (EGR) Parts products like EGR Valves, EGR Coolers, and EGR Cooler Clamps, all priced under $1,712.99.

Dorman – HD Solutions – Heavy Duty Exhaust Gas Recirculation Cooler Gasket Kit (Part No.904-5007)

Heavy Duty Exhaust Gas Recirculation Cooler Gasket Kit

from

$102.99
Tight seals are essential to proper EGR cooler operation. This EGR cooler gasket kit contains all the gaskets and seals required to ensure a solid repair. Made of quality materials, this kit is a direct replacement for original equipment parts.

Product Features:
  • Direct replacement – this exhaust gas recirculation (EGR) gasket kit matches the original equipment gaskets for this vehicle application.
  • Durable construction – the components in this EGR cooler gasket kit are made of quality materials for a secure fit and excellent durability
  • Convenient solution – the gaskets in this kit should be replaced whenever repairs are performed on the EGR cooler, intake manifold or oil cooler
  • Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life
See More

Dorman – HD Solutions – Heavy Duty Exhaust Gas Recirculation Cooler Kit (Part No.904-5036)

Heavy Duty Exhaust Gas Recirculation Cooler Kit

from

$1712.99
This EGR cooler has been engineered to match the fit and function of the original EGR cooler on specific vehicle years, makes and models. It has undergone rigorous testing and OEM benchmarking to ensure reliability.

Product Features:
  • Direct replacement – this EGR cooler is made to match the fit and function of the original part on specific applications.
  • Rigorously tested – heat transfer testing, burst testing and vehicle try-on testing ensures fit and reliability
  • Durable construction – this part is made from quality materials to ensure reliable performance and a long service life
  • 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 – Heavy Duty Exhaust Gas Recirculation Valve (Part No.904-5098)

Heavy Duty Exhaust Gas Recirculation Valve

from

$1092.99
This EGR valve is designed to match the fit and function of the original valve on specified vehicles. Made of quality materials, it is engineered for reliable performance and durability..

Product Features:
  • Direct replacement – this EGR valve is designed to match the fit and function of the original valve on specified vehicles..
  • Ideal solution – this valve is engineered to withstand extreme heat and carbon buildup, and is a reliable replacement for a failed original EGR valve
  • Durable construction – made from quality components to ensure reliable performance and long service life
  • Quality assured – backed by a team of product engineers based in the United States
See More

Dorman – HD Solutions – Heavy Duty EGR Valve (Part No.904-5001)

Heavy Duty EGR Valve

from

$637.99
Our EGR valves include a gasket for a complete repair. Plus, they are designed to withstand extreme heat and carbon build-up for a longer service life.

Product Features:
  • Direct replacement for a proper fit
  • Includes gasket for a tight seal
  • Helps reduce emissions to protect the environment
  • Vehicle try-on testing has been conducted on this part to ensure trouble-free performance
See More

Dorman – HD Solutions – EGR Cooler V-Band Clamp (Part No.904-5154)

EGR Cooler V-Band Clamp

from

$59.99
This exhaust gas recirculation (EGR) cooler clamp is designed to match the fit of the original clamp on specified vehicles and is recommended for replacement during EGR cooler service. It is engineered from stainless steel for reliable service life.

Product Features:
  • Direct replacement – this exhaust gas recirculation (EGR) cooler clamp is designed to match the fit of the original clamp and is recommended for replacement during EGR cooler service.
  • Ideal solution – engineered from stainless steel to withstand extreme heat and to resist corrosion
  • 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

Top Picks for 2003 Western Star 4900SA Fuel Pumps

Upgrade Western Star 4900SAs with top-quality Fuel Pumps parts, including 5 OEM and aftermarket selections for your 2003 model.

Carquest Premium – Fuel/Water Separator Spin-on with Drain (Part No.86406)

Fuel/Water Separator Spin-on with Drain

from

$41.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest spin-on fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Application engineered media which aids in stripping water in diesel fuels
  • Patent pending drain, metal end caps, which hold media in place
  • Rust resistant can, ensuring no leakage from inside
  • Made in USA
  • Includes Standpipe
  • CAUTION: Furnished D-Ring must be installed on post for seal.
See More

Carquest Premium – Extra-Large, Extended-Mileage Fuel/Water Separator Element (Part No.86651XE)

Extra-Large, Extended-Mileage Fuel/Water Separator Element

from

$44.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Made in USA
See More

Carquest Premium – Fuel/Water Separator Spin-on with Drain, Oval Sensor Port and Reusable Sensor (Part No.86422)

Fuel/Water Separator Spin-on with Drain, Oval Sensor Port and Reusable Sensor

from

$59.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest spin-on fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Contains Sensor Port Thread: M14 x 2.0;Standpipe
  • Includes Standpipe. Sensor Port Thread: M14 x 2.0
  • CAUTION: Furnished D-Ring must be installed on post for seal. NOT Interchangeable with 86604.
See More

Carquest Premium – Fuel/Water Separator Spin-on with Drain (Part No.86412)

Fuel/Water Separator Spin-on with Drain

from

$84.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest spin-on fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Application engineered media which aids in stripping water in diesel fuels
  • Patent pending drain, metal end caps, which hold media in place
  • Rust resistant can, ensuring no leakage from inside
  • Made in USA
  • Includes Integral Post Seal. Sensor Port Thread: 1/2-20
See More

Carquest Premium – Fuel/Water Separator Spin-on with Drain (Part No.86813)

Fuel/Water Separator Spin-on with Drain

from

$81.99
Modern fuel injection systems require fuel be free of both particulate and water contamination. Carquest spin-on fuel filters keep fuel clean and engines running at maximum efficiency.

Product Features:
  • Designed to meet or exceed OE filter performance levels over the entire OE recommended service interval.
  • Application engineered media which aids in stripping water in diesel fuels
  • Patent pending drain, metal end caps, which hold media in place
  • Rust resistant can, ensuring no leakage from inside
  • Made in USA
  • Includes Integral Post Seal
See More

In-Demand Fuel Injectors for 2003 Western Star 4900SAs

Select from 5 premium Fuel Injectors parts for your 2003 Western Star 4900SA, with prices ranging from $88.99 to $539.99.

Cardone – Fuel Injector (Part No.2J-506)

Fuel Injector

from

$539.99
CARDONE Remanufactured Fuel Injectors provide an alternative plug and play solution to fuel delivery for diesel applications. All units are flow tested and balanced and replaced with new O-rings and gaskets. Each unit retains OEM duty cycle and pulse width ensuring reliable performance. All units are built to meet or exceed OEM performance, providing a quality product both you and your vehicle can rely on.

Product Features:
  • All gaskets, O-rings and bearings are replaced 100% to ensure optimal performance
  • Each assembled unit is individually calibrated and tested to ensure it meets or exceeds O.E.M. form, fit and function
  • All components are renewed or replaced as necessary to ensure high quality and durability
  • When applicable, improvements based on typical failure modes of original units are incorporated into the design and manufacture of replacement component parts, which translates into longer service life and less down-time for the driver
  • Guaranteed fit and function
  • Meets or exceeds O.E.M. performance
See More

Cardone – Fuel Injector (Part No.2J-703)

Fuel Injector

from

$426.99
CARDONE Remanufactured Fuel Injectors provide an alternative plug and play solution to fuel delivery for diesel applications. All units are flow tested and balanced and replaced with new O-rings and gaskets. Each unit retains OEM duty cycle and pulse width ensuring reliable performance. All units are built to meet or exceed OEM performance, providing a quality product both you and your vehicle can rely on.

Product Features:
  • All gaskets, O-rings and bearings are replaced 100% to ensure optimal performance
  • Each assembled unit is individually calibrated and tested to ensure it meets or exceeds O.E.M. form, fit and function
  • All components are renewed or replaced as necessary to ensure high quality and durability
  • When applicable, improvements based on typical failure modes of original units are incorporated into the design and manufacture of replacement component parts, which translates into longer service life and less down-time for the driver
  • Guaranteed fit and function
  • Meets or exceeds O.E.M. performance
See More

Cardone – Fuel Injector (Part No.2J-704)

Fuel Injector

from

$345.99
CARDONE Remanufactured Fuel Injectors provide an alternative plug and play solution to fuel delivery for diesel applications. All units are flow tested and balanced and replaced with new O-rings and gaskets. Each unit retains OEM duty cycle and pulse width ensuring reliable performance. All units are built to meet or exceed OEM performance, providing a quality product both you and your vehicle can rely on.

Product Features:
  • All gaskets, O-rings and bearings are replaced 100% to ensure optimal performance
  • Each assembled unit is individually calibrated and tested to ensure it meets or exceeds O.E.M. form, fit and function
  • All components are renewed or replaced as necessary to ensure high quality and durability
  • When applicable, improvements based on typical failure modes of original units are incorporated into the design and manufacture of replacement component parts, which translates into longer service life and less down-time for the driver
  • Guaranteed fit and function
  • Meets or exceeds O.E.M. performance
See More

Cardone – Fuel Injector (Part No.2J-702)

Fuel Injector

from

$304.99
CARDONE Remanufactured Fuel Injectors provide an alternative plug and play solution to fuel delivery for diesel applications. All units are flow tested and balanced and replaced with new O-rings and gaskets. Each unit retains OEM duty cycle and pulse width ensuring reliable performance. All units are built to meet or exceed OEM performance, providing a quality product both you and your vehicle can rely on.

Product Features:
  • All gaskets, O-rings and bearings are replaced 100% to ensure optimal performance
  • Each assembled unit is individually calibrated and tested to ensure it meets or exceeds O.E.M. form, fit and function
  • All components are renewed or replaced as necessary to ensure high quality and durability
  • When applicable, improvements based on typical failure modes of original units are incorporated into the design and manufacture of replacement component parts, which translates into longer service life and less down-time for the driver
  • Guaranteed fit and function
  • Meets or exceeds O.E.M. performance
See More

Dorman – HD Solutions – Injector O-Ring Kit (Part No.904-8053)

Injector O-Ring Kit

from

$88.99
The components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles. They are engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged.

Product Features:
  • Direct replacements – the components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles.
  • Ideal solution – engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged
  • 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

Top-Rated Fuel and Emissions Systems Brands For Your 2003 Western Star 4900SA

Shop for the best-rated brands offering Fuel and Emissions Systems and other products for your 2003 Western Star 4900SAs. Below you’ll find some of our best rated Fuel and Emissions Systems from Carquest Premium, and more. Fuel and Emissions Systems from these brands that fit a 2003 4900SA start at just $41.99 and are rated as high as 4 stars. OEM and aftermarket Fuel and Emissions Systems don’t get more top quality, durable, and affordable than from the brands below.

Popular Carquest Premium 2003 Western Star 4900SA Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2003 Western Star 4900SA, using quality Fuel and Emissions Systems is essential to ensure durability and a perfect fit. Carquest Premium ticks all of those boxes. We offer a wide selection of Carquest Premium Fuel and Emissions Systems, specifically designed for the 2003 Western Star 4900SA. With over 6 Carquest Premium brand Fuel and Emissions Systems in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $41.99, with an average price of just $70.16. Plus, with over 1 customer reviews and an average rating of 4 stars, you can trust that our Carquest Premium Fuel and Emissions Systems will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

Carquest Diesel Exhaust Fluid Filter for SCR Systems
from
$106.99
This product is not rated

Carquest Diesel Exhaust Fluid Filter for SCR Systems

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Extra-Large, Extended-Mileage Fuel/Water Separator Element
from
$44.99
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Extra-Large, Extended-Mileage Fuel/Water Separator Element

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FAQs for 2003 Western Star 4900SA Fuel and Emissions Systems

Which Fuel and Emissions Systems are best-sellers for 2003 Western Star 4900SAs?

Out of 16 Fuel and Emissions Systems that fit 2003 Western Star 4900SAs, the following parts are the top sellers:

What’s the price range for 2003 Western Star 4900SA Fuel and Emissions Systems?

Fuel and Emissions System prices for the 2003 Western Star 4900SA start at $41.99 and go up to $1,712.99 for the most premium parts.

What’s the average price of a Fuel and Emissions System for a 2003 Western Star 4900SA?

The average price for Fuel and Emissions Systems for the 2003 Western Star 4900SA is $263.29. Keep in mind the variety of part types within our Fuel and Emissions System category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Fuel and Emissions Systems for other Western Star 4900SA model years?

Yes, we currently carry Fuel and Emissions Systems for 21 model years of Western Star 4900SAs between 2002 and 2023. Fuel and Emissions Systems are bought most frequently for the following model years: 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, and 2014.

What are the cheapest Fuel and Emissions Systems for my 2003 Western Star 4900SA?

The cheapest 2003 Western Star 4900SA Fuel and Emissions Systems we carry in stock are:

What types of Fuel and Emissions Systems do you sell for my 2003 Western Star 4900SA?

As of 2/5/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2003 Western Star 4900SA:

Can I get help with 2003 Western Star 4900SA Fuel and Emissions System orders?

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

What is your return policy for Western Star 4900SA Fuel and Emissions Systems?

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