2003 Cadillac CTS Engine Parts

Below you will find various in-demand Cadillac Engine Parts, components and accessories for your 2003 CTS. Advance Auto Parts has popular CTS parts like Engine Timing Parts, Valve Cover and Cylinder Heads, Engine Gaskets and Seals and more. You’ll also find aftermarket and OEM Engine Parts for other CTS model years including 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and more. Select a category of 2003 Cadillac CTS Engine Parts below and start saving instantly.

Popular 2003 Cadillac CTS Engine Parts Categories

Valve Cover Gaskets

Camshaft Position Sensors

OE Engine Oil Coolers

Rear Main Seal Sets

Cylinder Head Bolt Sets

Crankshaft Position Sensors

Cylinder Head Gasket Sets

Timing Idlers

Engine Mounts

Oil Pans

Cylinder Head Gaskets

Crankshaft Seals

Timing Belts

Timing Belt Tensioners

Oil Caps

Camshaft Position Sensor Connectors

Engine Oil Pump Pickup Tube and Screens

Main Bearing Repair Sleeves

Engine Control Module Relays

Camshaft Seals

Engine Valves

Engine Timing Belt Tensioner Pulleys

Engine Oil Filler Cap O-Rings

Fuel Tank Sending Unit Gaskets

Engine Oil Cooler Line Seals

Engine Valve Cover O-Rings

Essential Engine Parts for 2003 Cadillac CTSs

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$4.46

Camshaft Seal

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$239.99

Product Features:

Imperial Swirl-Cool« engine oil cooler kit
Size: 1-1/2″ x 6-1/2″ x 18″
Heavy-duty applications
All except Chevrolet V8 applications
Universal Cooler, NOT a direct OE replacement. User to determine fitment prior to installation
Heavy duty applications
All except Chevrolet V8 applications

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$55.67

ACDelco GM Original Equipment Cylinder Head Gasket is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:

GM-recommended replacement part for your GM vehicle
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$13.05

BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:

Premium components ensure optimum performance and long service life under all operating conditions
Neodymium in the core creates the strongest magnetic field and produces max high voltage output at all speeds
High-dielectric epoxy injected into case and pulled into vacuum to eliminate air pockets and prevent moisture intrusion or thermal breakdown
Reinforced bobbins prevent voltage flashover for an extended service life

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$164.66

T-Belt Tension Assem

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$49.99

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

Low swell in hydrocarbon fluids
Design type: spring loaded; multi-lip
Provides good low temperature capability
Temperature range: -40°F to 225°F; -40°C to 107°C
Delivers quality and reliable performance for every type of repair

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$322.68

The ACDelco GM Original Equipment Motor Mount is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:

GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$74.99

Ensure the proper sealing of the engine with our Engine Rear Main Seal Cover. The Seal Cover is designed from high-quality materials to stop and prevent engine oil leakage.

Product Features:

Rear Main Seal Cover Kit.
Rear Main Seal Cover Kit.
Ensure the proper sealing of the engine with our Engine Rear Main Seal Cover. The Seal Cover is designed from high-quality materials to stop and prevent engine oil leakage.
SPECIAL TOOL REQUIRED FOR INSTALLATIONá- GM alignment tool J414792B or Dorman 635-000 (or equivalent) is required to properly install cover assembly. Failure to use the correct tool and installation procedures will result in seal leaks.
Comes with bolts and gaskets – everything necessary for a complete repair

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$73.99

This engine camshaft 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 camshaft 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

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$4.49

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Meets or exceeds all original equipment specifications
Design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

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$31.49

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$56.99

Made In USA. A new Melling pick-up tube/oil screen assembly provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system. Contaminates enter your oil system via engine wear, extended time between oil changes and other internal engine sources. These contaminates can interfere with the proper oil flow and pressure spring functions resulting in engine damage and/or failure. Melling suggests that a new properly installed oil pump pick-up tube/screen be a part of every oil pump installation. Several Melling oil pump applications are offered with an oil screen included.

Product Features:

Manufactured from high quality durable materials for long wear
Precision engineering protects the engine from dirt and contaminants
Designed for long-life and worry-free performance
Meets or exceeds original equipment specifications

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$457.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface scratches and imperfections
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$675.99

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

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$11.12

The Vaico Engine Oil Filler Cap is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:

Premium Original Equipment replacement
Provides performance and dependability
Manufactured to meet OE specifications

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$1.47

Seal Ring – Copper

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$93.81

The ACDelco GM Original Equipment Engine Timing Belt Tensioner Pulley is a GM-recommended replacement for your vehicle’s original component. It is required to maintain correct timing belt position and tension. This original equipment engine timing belt tensioner pulley has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Required to maintain correct timing belt position and tension
Designed to GM OE specifications to optimize component life and prevent noise
Validated to perform with critical engine management sensors, such as cam position sensors, to ensure that new parts will not turn on the Check Engine light in your vehicle
Designs are enhanced and amended to incorporate updates, upgrades, and Technical Service Bulletins
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$36.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
Validated for fit, form and function
Unsurpassed quality you can trust

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$17.61

The ACDelco GM Original Equipment Fuel Pump Tank Seal is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:

GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$31.49

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

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$13.49

This oil filler cap O-ring matches the dimensions of the original O-ring to provide a reliable seal. Made of premium materials to ensure leak-free performance.

Product Features:

Ideal replacement – this oil filter cap O-ring matches the fit and function of the original part.
Durable materials – this O-ring is made from quality a material to ensure leak-free performance.
Convenient shop supply – this part is ideal to have on hand for routine service
Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life

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$178.43

Timing Belt Idler Pulley

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$57.99

MAHLE gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:

All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
Valve cover gasket set contains all the gaskets required – may also contain spark plug tube seals and grommets if necessary.
The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

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$10.29

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Engine$aver Hardware cost-saving application
Repairs worn sealing surfaces to assure a leak free repair
Meets or exceeds all original equipment specifications
Engineered and manufactured specifically for repair applications
Unsurpassed quality you can trust
Validated for fit, form, and function
Validated for fit, form, and function

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$6.49

Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

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$11.14

TRW Engine Components is a recognized developer of valves and valve train components. A wide range of materials and material combinations are used to meet the engineering requirements in the different engine applications. Materials vary from ferritic martensitic steels (intake valves) and austentic CrMn based steels to extreme heat and corrosion resistant Nickel base super alloy for exhaust valves. To improve wear and corrosion resistance, valves can be chromium plated or nitrided. These coatings are used to improve the compatibility of the valve stem surface to the valve guide material. If necessary, exhaust valves (and in some cases also intake valves) can be hard-faced. In hard-facing, a more heat and wear resistant material is welded to form the valve seat. Seat hard-facing extends the valve life significantly.

Product Features:

OE Quality
Optimized for strength
Heat and corrosion resistant
Chromium plated or nitrided
Stem optimized to resist wear

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$45.99

Manufactured with tough, wear-resistant fabric, high-tensile strength cord and a molded tooth surface, the Dayco timing belt provides consistent slip-proof power transfer and high resistance to oil and engine heat. The belt features a molded cog design which runs quieter and is more economical and a premium, high modulus glass fiber cord that delivers precise length stability to keep the engine running smoothly over the life of the belt.

Product Features:

Designed for specific OHC and DOHC applications that range from normal service to high performance, high temperature engines
Offers noise reduction and minimum dimensional tolerances for precise valve timing
Engineered with reduced elongation for maximum durability, high abrasion resistance and better performance
Timing marks are applied on the belt for proper installation

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$79.57

The ContiTech Timing Belt meets or exceeds the manufacturer s specifications for durability, fit and quality. The ContiTech Synchrobelt timing belt is resistant to high temperatures, oil resistant, provides low noise and reliable operation.

Product Features:

OE-Equivalent and a direct fit application.
Precision molded teeth.
Low noise operation.
Resistant to high temperatures.

Upgrade your 2003 Cadillac CTS with Top-Quality Engine Parts

When it comes to maintaining or upgrading your 2003 Cadillac CTS, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Cadillac or enhancing its overall performance, Engine Parts are key to keeping your CTS functioning at its best. At Advance Auto Parts, we offer a wide selection of 55 Engine Parts for the 2003 Cadillac CTS, designed to meet your needs without breaking the bank. From Engine Timing Part replacements to Valve Cover and Cylinder Heads 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 Cadillac CTS at great prices. Our Engine Parts inventory for this model ranges from just $1.47 to $581.14, with an average price of $74.74. Our 55 Engine Parts in stock come from 27 trusted brands, so you’re sure to find the right part for your 2003 Cadillac CTS 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 Cadillac CTS, we stock popular OEM and aftermarket Engine Parts from top names like FELPRO, Carquest, Carquest Premium, and more. FELPRO Engine Parts start at just $4.49 and boast an impressive 5 stars average rating from customers. Carquest and Carquest Premium also bring quality to the table, with Engine Parts available starting at $12.49, and at an average 4 stars rating. With 46 customer reviews and counting, our 2003 Cadillac CTS Engine Parts 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 Engine Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2003 Cadillac CTS is always ready to roll. We’re committed to providing you with everything you need to keep your CTS in top shape, all in one place. Start shopping confidently below for your 2003 Cadillac CTS!

Best-Selling Engine Timing Parts for 2003 Cadillac CTSs

Enhance the driving experience in your Cadillac with 5 quality Engine Timing Part components, starting at $45.99.

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from

$45.99

Designed for specific OHC and DOHC applications that range from normal service to high performance, high temperature engines
Offers noise reduction and minimum dimensional tolerances for precise valve timing
Engineered with reduced elongation for maximum durability, high abrasion resistance and better performance
Timing marks are applied on the belt for proper installation

from

$178.43

Timing Belt Idler Pulley

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$164.66

T-Belt Tension Assem

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$93.81

Required to maintain correct timing belt position and tension
Designed to GM OE specifications to optimize component life and prevent noise
Validated to perform with critical engine management sensors, such as cam position sensors, to ensure that new parts will not turn on the Check Engine light in your vehicle
Designs are enhanced and amended to incorporate updates, upgrades, and Technical Service Bulletins
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

from

$79.57

OE-Equivalent and a direct fit application.
Precision molded teeth.
Low noise operation.
Resistant to high temperatures.

Most Popular 2003 Cadillac CTS Valve Cover and Cylinder Heads

Customize your Cadillac with 7 Valve Cover and Cylinder Heads products like Cylinder Head Bolt Sets, Cylinder Head Gaskets, and Cylinder Head Gasket Sets, all priced under $431.31.

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$4.49

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Meets or exceeds all original equipment specifications
Design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

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$431.31

WARNING: This item cannot be returned for a replacement or refund if opened! Mahle is the largest gasket manufacturer in the world, providing you original equipment design and quality and world class aftermarket service. Mahle does not just cut gaskets – it designs total system sealing approaches that utilize application engineering. This means that regardless of what application you are trying to seal, you can count on Mahle doing the research and testing to provide the optimum material and technology for that specific application – this systems sealing approach requires a variety of materials. No other gasket manufacturer offers the Application Engineered approach to sealing an engine. A variety of different gasket materials insure an engine gets the optimal seal. All gaskets are not created equal – Mahle gaskets prove it every day.

Product Features:

Original equipment design and quality
Head sets give you original equipment form, fit, and function
Utilizes OE equivalent or better materials in all head sets
Packaged in shrink wrapped tray
Every part you need to complete your gasket repair in one package unless otherwise stated

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$304.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

SEALING TECHNOLOGIES – Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$47.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

SUPERIOR SEAL – Precise embossed sealing beads at all vital areas to eliminate leak paths

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$41.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
Validated for fit, form and function
Unsurpassed quality you can trust

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$39.45

Exhaust Valve

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$11.14

OE Quality
Optimized for strength
Heat and corrosion resistant
Chromium plated or nitrided
Stem optimized to resist wear

Top Picks for 2003 Cadillac CTS Engine Gaskets and Seals

Upgrade Cadillac CTSs with top-quality Engine Gaskets and Seals parts, including 7 OEM and aftermarket selections for your 2003 model.

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$66.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM — Proprietary cork-rubber formulation
SUPERIOR SEAL — Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road

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$55.99

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM — Proprietary cork-rubber formulation
SUPERIOR SEAL — Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road

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$20.79

MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:

All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

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$26.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
Engineered and manufactured specifically for repair applications
Unsurpassed quality you can trust
Validated for fit, form, and function

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$77.75

The ACDelco GM Original Equipment Fuel Sender Seal is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:

GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$46.25

Elring valve cover gaskets are engineered to meet the specific requirements of the installation site. Manufactured from high-quality materials, the gaskets are designed to provide excellent performance and reliability. Elring valve cover gaskets feature specially designed sealing lips. The overall layout of these lips is of particular importance when it comes to ensuring a high-quality seal and long service life. The same applies to the selection of premium-quality raw materials.

Product Features:

High-quality design and engineering for perfect performance
Premium materials and high-precision curing processes for perfect shore hardness and superior reliability
Majority of Elring valve cover gaskets sold as kits for improved convenience and efficient installation

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$1.47

Seal Ring – Copper

In-Demand Camshafts for 2003 Cadillac CTSs

Select from 8 premium Camshafts parts for your 2003 Cadillac CTS, with prices ranging from $4.46 to $73.99.

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$41.49

National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool
Installation tool reduces sleeve distortion and allows for installation without removal from the shaft

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$35.99

Our control modules feature double wire bonds for better connections, greater dependability and longer life despite being subjected to intense vibration and the tough operating environment
Copper slug heat sinks provide better heat dissipation to prevent heat from damaging the module
Our ignition modules will respond to a weak signal from the crankshaft position sensor and begin energizing the coils immediately for better starts in cold weather
High-temperature polymer housing reducing moisture intrusion and minimizes vibration damage for extended life and improved reliability
Our ignition modules are durability tested for 500 thermal cycles ranging from -40C to +125C

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$31.49

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

from

$12.49

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$67.99

A leader in vehicle electronic solutions, each premium product meets or exceeds OE specifications in appearance, fit, and function, ensuring easy installation and excellent performance. The product has been tested under extreme environments, including thermal shock and vibration, with unparalleled reliability, durability, and accuracy.

Product Features:

Products are produced in ISO 14001 and IATF 16949 certified facilities to ensure the highest quality and consistency throughout the production process.
Reliable circuit board and product structure design, 3D proofing, and field test verification to ensure correct signal output at all speeds.
Manufactured in an anti-static environment to ensure reliability and stability.
Extreme temperature and salt spray tests simulate real-world vehicle conditions to ensure durability and reliability.
Providing this premium product line, we meet the service professionals needs with the highest quality product every time the part comes out of the box.

from

$26.99

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

from

$73.99

Direct replacement – this engine camshaft 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

from

$4.46

Camshaft Seal

Most Sold 2003 Cadillac CTS Engine Mounts

Explore our best-selling Cadillac parts for the 2003 CTS among 4 OEM and aftermarket options starting from $100.20.

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from

$109.99

The purpose of the mount is to support the engine and transmission on the chassis and dampen vibration and noise from reverberating to the rest of the vehicle. Engine and Transmission Mounts are engineered and manufactured to meet or exceed OEM specifications using the latest CAD/CAM engineering process to ensure superior quality, form, fit and function. Only premium quality materials are used in the manufacturing process to guarantee precise performance and maximum durability. Applicable to Applicable to BUIC 09-11; CADI 03-14;. Please verify your application.

Product Features:

MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
SUPERIOR BOND: A special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.
HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
For Years: 2003-2014
Weight approx: 5 Lbs
HYDRAULIC
REUSE HEAT SHIELD

from

$218.55

GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$152.52

Engine Mount

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$100.20

Engine Mount

Top-Rated Engine Parts Brands For Your 2003 Cadillac CTS

Shop for the best-rated brands offering Engine Parts and other products for your 2003 Cadillac CTSs. Below you’ll find some of our best rated Engine Parts from FELPRO, Carquest, and Carquest Premium, and more. Engine Parts from these brands that fit a 2003 CTS start at just $4.49 and are rated as high as 5 stars. OEM and aftermarket Engine Parts don’t get more top quality, durable, and affordable than from the brands below.

Popular FELPRO 2003 Cadillac CTS Engine Parts

When it comes to maintaining or upgrading your 2003 Cadillac CTS, using quality Engine Parts is essential to ensure durability and a perfect fit. FELPRO ticks all of those boxes. We offer a wide selection of FELPRO Engine Parts, specifically designed for the 2003 Cadillac CTS. With over 8 FELPRO brand Engine Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $4.49, with an average price of just $72.62. Plus, with over 9 customer reviews and an average rating of 5 stars, you can trust that our FELPRO Engine Parts will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from
$26.99

This product is not rated

Rear Main Seal Set

“”

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$31.49

This product is not rated

REAR MAIN BEARING SEAL SET

“”

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$4.49

This product is not rated

O-RING

“”

Popular Carquest 2003 Cadillac CTS Engine Parts

Carquest auto parts is one of the highest quality Engine Part brands in the market. Any 2003 Cadillac CTS owner should feel confident when installing genuine Carquest parts in their vehicle. To ensure the best fit and performance for your 2003 CTS, Advance Auto Parts carries a full inventory of 2 Carquest Engine Parts. Plus you will be keeping your Cadillac in peak condition while saving money because prices on these Carquest Engine Parts range from $13.05 to $35.99, plus, with more than 5 customer reviews and an impressive 4 stars average rating, you can be confident the Fram Engine Parts below will deliver on both quality and value.

from
$35.99

(4)

Engine Camshaft Position Sensor Connector

“fit good and works”

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$13.05

(1)

A/C Compressor Control Relay

“This is an Exact Fit and Function Replacement for the “Seriously Overpriced 8297 manufactured by Denso and offered at dealerships and on eBay for arou”

FAQs for 2003 Cadillac CTS Engine Parts

Which Engine Parts are best-sellers for 2003 Cadillac CTSs?

Out of 55 Engine Parts that fit 2003 Cadillac CTSs, the following parts are the top sellers:

Engine Camshaft Position Sensor Connector (20974216) – $35.99
Engine Mount: Front Left, Front Right, Rear, 1 Piece (10057222) – $109.99
4WD Indicator Light Switch Connector (12443341) – $31.49

What’s the price range for 2003 Cadillac CTS Engine Parts?

Engine Part prices for the 2003 Cadillac CTS start at $1.47 and go up to $581.14 for the most premium parts.

What’s the average price of a Engine Part for a 2003 Cadillac CTS?

The average price for Engine Parts for the 2003 Cadillac CTS is $74.74. 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 Cadillac CTS model years?

Yes, we currently carry Engine Parts for 16 model years of Cadillac CTSs between 2004 and 2019. Engine Parts are bought most frequently for the following model years: 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, and 2011.

What are the cheapest Engine Parts for my 2003 Cadillac CTS?

The cheapest 2003 Cadillac CTS Engine Parts we carry in stock are:

Seal Ring – Copper (11973371) – $1.47
Camshaft Seal (12550265) – $4.46
O-RING (12005635) – $4.49
Multi Purpose Seal (99982641) – $6.99
Multi Purpose Seal (20440147) – $8.29

What are the top-rated Engine Parts that fit the 2003 Cadillac CTS?

Out of 46 reviews by customers, our 2003 Cadillac CTS Engine Parts have an average customer rating of . These are some of the highest-rated Engine Part types for the 2003 Cadillac CTS and their top-rated products:

Engine Gaskets and Seals
- Engine Valve Cover Gasket Set (20780366) – $66.99
- Engine Valve Cover Gasket Set (15780772) – $55.99

What types of Engine Parts do you sell for my 2003 Cadillac CTS?

As of 2/5/25, these are some of the most in-demand types of Engine Parts for a 2003 Cadillac CTS:

Can I get help with 2003 Cadillac CTS Engine Part orders?

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

What is your return policy for Cadillac CTS Engine Parts?

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

2003 Cadillac CTS Engine Parts

Corteco – Camshaft Seal (Part No.A8080299634CFW)

Imperial – Engine Oil Cooler (Part No.241040)

ACDelco – GM Original Equipment Cylinder Head Gasket (Part No.A8100495159ACD)

Carquest – A/C Compressor Control Relay (Part No.R6055)

Professional Parts Sweden – T-Belt Tension Assem (Part No.A5028282040PPS)

National – Multi Purpose Seal (Part No.710237)

ACDelco – GM Original Equipment Motor Mount (Part No.A7000445833ACD)

Dorman – Rear Main Seal Cover Kit (Part No.635-518)

Dorman – Camshaft Position Sensor (Part No.907-814)

Felpro – O-RING (Part No.73193)

Carquest Premium – 4WD Indicator Light Switch Connector (Part No.PTA1019)

Melling – Stock Replacement Oil Pump Screen (Part No.370S)

Felpro – Cylinder Head Gasket Set (Part No.HS 26376 PT-8)

Dorman – Engine Oil Pan: Direct Fit, Aluminum, Center Sump, 6 Quart (Part No.264-385)

Vaico – Engine Oil Filler Cap (Part No.A6140133836VCO)

CRP – Seal Ring – Copper (Part No.4M200133661CRP)

ACDelco – GM Original Equipment Engine Timing Belt Tensioner Pulley (Part No.A5340579773ACD)

Felpro – CYLINDER HEAD BOLT SET (Part No.ES 72390)

ACDelco – GM Original Equipment Fuel Pump Tank Seal (Part No.E3004289666ACD)

Dorman – Magnetic Crankshaft Position Sensor (Part No.907-885)

Dorman – Engine Oil Cap O-ring (Part No.42353)

SKF – Timing Belt Idler Pulley (Part No.A5301282026SKF)

MAHLE Original – Valve Cover Gasket Set (Part No.VS50502)

Felpro – Engine Crankshaft Repair Sleeve (Part No.16228)

Sealed Power – Engine Intake Valve (Part No.V-4644)

TRW – TRW Intake Valve (Part No.A4060223554TRW)

Dayco – Premium Timing Belt, 70.87 Inch With 225 Round Tooth, With Flat Tip (Part No.95285)

ContiTech – Timing Belt (Part No.A50001466075CON)

Dayco – Premium Timing Belt, 70.87 Inch With 225 Round Tooth, With Flat Tip (Part No.95285)

SKF – Timing Belt Idler Pulley (Part No.A5301282026SKF)

Professional Parts Sweden – T-Belt Tension Assem (Part No.A5028282040PPS)

ACDelco – GM Original Equipment Engine Timing Belt Tensioner Pulley (Part No.A5340579773ACD)

ContiTech – Timing Belt (Part No.A50001466075CON)

Felpro – O-RING (Part No.73193)

Mahle – Cylinder Head Gasket Set (Part No.A8010575129MAH)

Felpro – Cylinder Head Gasket Set (Part No.HS 26489 PT)

Felpro – Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts (Part No.26489 PT)

Felpro – Engine Cylinder Head Bolt Set (Part No.ES 72906)

Mahle – Exhaust Valve (Part No.A4050249183MAH)

TRW – TRW Intake Valve (Part No.A4060223554TRW)

Felpro – Engine Valve Cover Gasket Set (Part No.VS 50628 R)

Felpro – Engine Valve Cover Gasket Set (Part No.VS 50566 R)

MAHLE Original – Engine Crankshaft Seal (Part No.JV1705)

Felpro – Rear Main Seal Set (Part No.BS 40671)

ACDelco – GM Original Equipment Fuel Sender Seal (Part No.E2050420238ACD)

Elring – Elring Valve Cover Gasket (Part No.A8030371930ELR)

CRP – Seal Ring – Copper (Part No.4M200133661CRP)

National – Shaft Repair Sleeve (Part No.99147)

Carquest – Engine Camshaft Position Sensor Connector (Part No.PT196)

Carquest Premium – 4WD Indicator Light Switch Connector (Part No.PTA1019)

Carquest Premium – ABS Wheel Speed Sensor Connector (Part No.ABA3461)

Carquest Premium – Engine Camshaft Position Sensor (Part No.CSA1498)

Carquest Premium – Engine Camshaft Position Sensor Connector (Part No.PTA1352)

Dorman – Camshaft Position Sensor (Part No.907-814)

Corteco – Camshaft Seal (Part No.A8080299634CFW)

Anchor – Engine Mount: Front Left, Front Right, Rear, 1 Piece (Part No.3149)

ACDelco – GM Original Equipment Motor Mount (Part No.A7000444420ACD)

Autopart International Inc – Engine Mount (Part No.A70002764421API)

International Suspension Group – Engine Mount (Part No.A7000444420ISG)