2003 Chevrolet Trailblazer Ext Engine Timing Parts

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Keep Your 2003 Chevrolet Trailblazer Ext in Top Shape with Quality Engine Timing Parts

Whether you’re repairing or upgrading your Engine Timing Part, using high-quality parts is key to keeping your 2003 Chevrolet Trailblazer Ext looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Engine Timing Chain Kits, Timing Cover Seals, and Timing Sets. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Engine Timing Parts from Trusted Brands

Looking for a reliable Engine Timing Part? We’ve got you covered with options from brands you know and trust like Dorman and National. For example, Dorman Engine Timing Parts start at just $87.99 with an average 4.2 star rating. National offer similar pricing and quality, backed by strong customer feedback. With over 87 reviews and a solid 4.3 star average, you can shop with confidence knowing other Chevrolet Trailblazer Ext owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Chevrolet Trailblazer Ext Engine Timing Part at Advance Auto Parts is around $167.99, with a range that starts at $23.99 and goes up to $428.99. With 50 options in stock from 10 trusted brands, finding the right fit is easy. Popular picks like Carquest Engine Variable Valve Timing (VVT) Solenoid, VVC1003, GM Genuine Parts Variable Valve Timing (VVT) Solenoid, 12615873, and Cloyes Gear Engine Timing Components, Camshaft Timing Kit, Crankshaft Timing Kit, Timing Set with Sprockets, Timing Drive Assembly, C-3210 start at just $71.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Engine Timing Part, don’t forget to check out other key components like Engine Gaskets and Seals and Oil Delivery Parts. At Advance Auto Parts, we’re here to help you keep your 2003 Chevrolet Trailblazer Ext in peak condition, inside and out.

Essential 2003 Chevrolet Trailblazer Ext Engine Timing Parts

Cloyes Gear – Cloyes Gear Engine Timing Crankshaft Sprocket, S827 (Part No.S827)

Cloyes Gear Engine Timing Crankshaft Sprocket, S827

from

$28.99
Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.
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Cloyes Gear – Cloyes Gear Engine Timing Crankshaft Sprocket, S913 (Part No.S913)

Cloyes Gear Engine Timing Crankshaft Sprocket, S913

from

$76.99
Sprocket Made From High Alloy Material. Features Precision Tooth Form To Assure Proper Chain Engagement, And Is Balanced For Proper Timing.
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INA US – INA US , ZC-9-0195S (Part No.ZC-9-0195S)

INA US , ZC-9-0195S

from

$402.99
INA US , ZC-9-0195S. ENGINE PARTS>TIMING COMPONENTS>TIMING CHAIN SETS>TIMING CHAIN SETS from INA US
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3158AZ (Part No.9-3158AZ)

Cloyes Performance High Performance Timing Set, 9-3158AZ

from

$382.99
“HEX-A-JUST Allows for Infinite Valve Timing Adjustability of +/-6 Degrees to Tune for Maximum Engine Performance Output. One Piece Camshaft Sprocket Design Featuring a Billet Eccentric Camshaft Dowel Bushing. Both Billet Steel Sprockets are Heat Treated for Durability. Upgraded “”Z”” Chain TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Friction. Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Gear – Cloyes Gear Engine Timing Chain Guide, 9-5506 (Part No.9-5506)

Cloyes Gear Engine Timing Chain Guide, 9-5506

from

$29.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. A timing chain guide serves as a guide (or track) for the timing chain, connecting the crankshaft and camshaft ensuring proper alignment and timing. Cloyes timing chain guides use the latest in design and material technology, ensuring quiet operation, durability that meet or exceed OEM performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support. 
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INA US – INA US Engine Timing Chain Guide, ZG-9-5504 (Part No.ZG-9-5504)

INA US Engine Timing Chain Guide, ZG-9-5504

from

$34.99
INA Timing Chain Guides are designed to meet or exceed OE quality and performance. Our PLASTIC meets the OEM PA66 and PA46 grade for material and hardness.
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Cloyes Gear – Cloyes Gear Primary Timing Chain Kit: Exact Fit, 168 Links, Timing Components, With Sprockets, 9-0195S (Part No.9-0195S)

Cloyes Gear Primary Timing Chain Kit: Exact Fit, 168 Links, Timing Components, With Sprockets, 9-0195S

from

$304.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing chain kits are engineered for precision, durability, and optimal engine performance. Kits include all chains, sprockets, tensioners, chain guides, and chain tensioner guides – respective to application and kit selection. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support.
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Dayco – Dayco Timing Chain Kit, 3 Piece Set, Single Roller Sprockets And Chain, KTC1392 (Part No.KTC1392)

Dayco Timing Chain Kit, 3 Piece Set, Single Roller Sprockets And Chain, KTC1392

from

$89.99
With the backing of an industry-leading two year or 60,000 mile parts and labor warranty, each Dayco timing chain kit includes top-grade timing chains, precision machined crank sprockets and cam sprockets, tensioners, high-grade plastic guides, seals and VVT solenoids and cam phasers if the application calls for it.
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GM Genuine Parts – GM Genuine Parts Variable Valve Timing (VVT) Solenoid, 12615873 (Part No.12615873)

GM Genuine Parts Variable Valve Timing (VVT) Solenoid, 12615873

from

$115.99
ACDelco GM Original Equipment Engine Variable Valve Timing Solenoids regulate oil flow to the cam phasers that change the timing of the camshafts. The desired positions of the camshaft varies with engine speed and load and is calibrated for optimal engine performance, drive quality, and efficiency. They are GM-recommended replacements for your vehicle’s original components. These original equipment solenoids have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Carquest Premium – Carquest Engine Variable Valve Timing (VVT) Solenoid, VVC1003 (Part No.VVC1003)

Carquest Engine Variable Valve Timing (VVT) Solenoid, VVC1003

from

$71.99
The variable valve timing (VVT) system allows the engine control module (ECM) to regulate the intake and exhaust valve phase angle providing the most optimal engine volumetric efficiency under all engine operating condition to control tailpipe emissions and engine efficiency. Variable valve timing is an emission control device and although there are various methods of operation, the typical device is regulated by oil control valves, actuator solenoids and camshaft phasers.
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National – National Engine Crankshaft Seal, 710551 (Part No.710551)

National Engine Crankshaft Seal, 710551

from

$26.99
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.
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Cloyes Gear – Cloyes Gear Engine Timing Chain, C195 (Part No.C195)

Cloyes Gear Engine Timing Chain, C195

from

$91.99
Pre-Stressed And Heat-Treated For Increased Durability. Precision Cut Links With Smooth Finish. Precision Pitch Control For Proper Chain To Sprocket Tooth Fit.
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Cloyes Gear – Cloyes Gear Engine Timing Chain, 9-4205 (Part No.9-4205)

Cloyes Gear Engine Timing Chain, 9-4205

from

$45.49
Since 1921, Cloyes has been the trusted leader in automotive timing systems. Our timing chains are built to synchronize crankshaft and camshaft rotation with absolute accuracy, ensuring precise valve timing and long-term engine performance. Available as stand-alone chains or in complete kits, Cloyes timing chains are manufactured from premium materials, heat-treated, pre-stressed and engineered for a perfect chain-to-sprocket tooth fit €” delivering quiet operation, durability, and OE-level performance you can count on. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
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Cloyes Gear – Cloyes Gear Engine Timing Chain Guide, 9-5504 (Part No.9-5504)

Cloyes Gear Engine Timing Chain Guide, 9-5504

from

$23.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. A timing chain tensioner guide serves as a guide (or track) for the timing chain and applies tension to the system, connecting crankshaft and camshaft ensuring proper alignment and timing. Cloyes timing chain guides use the latest in design and material technology, ensuring quiet operation, durability and that meet or exceed OEM performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support. 
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Dorman – Dorman Timing Cover Kit, 635-522 (Part No.635-522)

Dorman Timing Cover Kit, 635-522

from

$118.99
This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards.
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Dorman – Dorman Timing Cover Kit, 635-521 (Part No.635-521)

Dorman Timing Cover Kit, 635-521

from

$174.99
This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards.
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Dorman – Dorman Timing Cover Kit – Includes Gasket, 635-515 (Part No.635-515)

Dorman Timing Cover Kit - Includes Gasket, 635-515

from

$118.99
This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards.
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Cloyes Gear – Cloyes Gear Engine Timing Camshaft Sprocket, S826T (Part No.S826T)

Cloyes Gear Engine Timing Camshaft Sprocket, S826T

from

$28.99
Sprocket Made From High Alloy Material. Features Precision Tooth Form To Assure Proper Chain Engagement, And Is Balanced For Proper Timing.
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Dorman – Dorman Camshaft Phaser – Variable Timing Camshaft Gear, 917-255 (Part No.917-255)

Dorman Camshaft Phaser - Variable Timing Camshaft Gear, 917-255

from

$166.99
The variable valve timing sprocket is key to ensuring an engine’s performance and clean running. Replace a worn factory VVT sprocket with this quality engineered sprocket to restore lost performance. Designed to install and perform like the original.
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Cloyes Gear – Cloyes Gear Engine Timing Camshaft Sprocket, S908 (Part No.S908)

Cloyes Gear Engine Timing Camshaft Sprocket, S908

from

$59.99
Sprocket Made From High Alloy Material. Features Precision Tooth Form To Assure Proper Chain Engagement, And Is Balanced For Proper Timing.
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Cloyes Gear – Cloyes Gear Engine Timing Chain Tensioner, 9-5512 (Part No.9-5512)

Cloyes Gear Engine Timing Chain Tensioner, 9-5512

from

$61.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems, delivering premium-quality solutions. A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design and application, Cloyes engine timing chain tensioners can use spring tension or hydraulic pressure to properly tension the chain for optimal performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support.
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GM Genuine Parts – GM Genuine Parts Timing Chain Tensioner, 12598504 (Part No.12598504)

GM Genuine Parts Timing Chain Tensioner, 12598504

from

$62.99
ACDelco GM Original Equipment Engine Timing Chain Tensioners help maintain a consistent amount of tension within the timing chain to help reduce the effect that slack has on the valve timing of the engine, and are GM-recommended replacements for your vehicle’s original components. These original equipment tensioners have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Driveworks – Driveworks Camshaft Seal, S-99139 (Part No.S-99139)

Driveworks Camshaft Seal, S-99139

from

$23.99
Driveworks Camshaft Seal, S-99139. BEARINGS, SEALS, HUB ASSEMBLIES>BEARINGS & SEALS>SEALS>ECONOMY SEALS from Driveworks
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Most Popular Engine Timing Chain Kits for 2003 Chevrolet Trailblazer Exts

Enhance your 2003 Chevrolet Trailblazer Ext with one of the 2 Engine Timing Chain Kits we have in stock, starting at just $89.99.

Cloyes Gear – Cloyes Gear Primary Timing Chain Kit: Exact Fit, 168 Links, Timing Components, With Sprockets, 9-0195S (Part No.9-0195S)

Cloyes Gear Primary Timing Chain Kit: Exact Fit, 168 Links, Timing Components, With Sprockets, 9-0195S

from

$304.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing chain kits are engineered for precision, durability, and optimal engine performance. Kits include all chains, sprockets, tensioners, chain guides, and chain tensioner guides – respective to application and kit selection. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading Warranty (limited) and technical support.
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Dayco – Dayco Timing Chain Kit, 3 Piece Set, Single Roller Sprockets And Chain, KTC1392 (Part No.KTC1392)

Dayco Timing Chain Kit, 3 Piece Set, Single Roller Sprockets And Chain, KTC1392

from

$89.99
With the backing of an industry-leading two year or 60,000 mile parts and labor warranty, each Dayco timing chain kit includes top-grade timing chains, precision machined crank sprockets and cam sprockets, tensioners, high-grade plastic guides, seals and VVT solenoids and cam phasers if the application calls for it.
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Best-Selling 2003 Chevrolet Trailblazer Ext Timing Cover Seal

Upgrade your Trailblazer Ext with our best-selling Timing Cover Seal with a 4 Starts rating across 3 reviews.

National – National Engine Crankshaft Seal, 710551 (Part No.710551)

National Engine Crankshaft Seal, 710551

from

$26.99
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.
See More

Top-Quality Timing Sets for 2003 Chevrolet Trailblazer Exts

Choose a high-quality OEM or aftermarket Timing Set for Chevrolet Trailblazer Exts and enjoy top-notch performance from $98.99.

Cloyes Gear – Cloyes Gear Engine Timing Components, Camshaft Timing Kit, Crankshaft Timing Kit, Timing Set with Sprockets, Timing Drive Assembly, C-3210 (Part No.C-3210)

Cloyes Gear Engine Timing Components, Camshaft Timing Kit, Crankshaft Timing Kit, Timing Set with Sprockets, Timing Drive Assembly, C-3210

from

$98.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing sets are engineered for precision, durability, and optimal engine performance. Sets includes crankshaft sprocket, camshaft sprocket and chain. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3658TX9 (Part No.9-3658TX9)

Cloyes Performance High Performance Timing Set, 9-3658TX9

from

$175.99
“Billet Crankshaft Sprocket Has Nine Keyways for +/- 8 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Block Thrust Surface Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3158A (Part No.9-3158A)

Cloyes Performance High Performance Timing Set, 9-3158A

from

$234.99
“HEX-A-JUST Allows for Infinite Valve Timing Adjustability of +/-6 Degrees to Tune for Maximum Engine Performance Output. One Piece Camshaft Sprocket Design Featuring a Billet Eccentric Camshaft Dowel Bushing. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Friction. Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3158AZR (Part No.9-3158AZR)

Cloyes Performance High Performance Timing Set, 9-3158AZR

from

$428.99
“HEX-A-JUST Allows for Infinite Valve Timing Adjustability of +/-6 Degrees to Tune for Maximum Engine Performance Output. One Piece Camshaft Sprocket Design Featuring a Billet Eccentric Camshaft Dowel Bushing. Both Billet Steel Sprockets are Heat Treated for Durability. Upgraded “”Z”” Chain TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Friction. Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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INA US – INA US , ZC-9-0195S (Part No.ZC-9-0195S)

INA US , ZC-9-0195S

from

$402.99
INA US , ZC-9-0195S. ENGINE PARTS>TIMING COMPONENTS>TIMING CHAIN SETS>TIMING CHAIN SETS from INA US
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3658TX3Z (Part No.9-3658TX3Z)

Cloyes Performance High Performance Timing Set, 9-3658TX3Z

from

$384.99
“Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter “”Z”” Chain for Reduced Friction. “”Z”” Chain Approximately 33% Overall Increased Strength Over the Standard High Performance Chain. “”Z”” Chain Featuring a Press Fit Center Link design that Increases Load Distribution with Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness and Pre-stressed to Increase Fatigue Life. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Block Thrust Surface Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3158AZ (Part No.9-3158AZ)

Cloyes Performance High Performance Timing Set, 9-3158AZ

from

$382.99
“HEX-A-JUST Allows for Infinite Valve Timing Adjustability of +/-6 Degrees to Tune for Maximum Engine Performance Output. One Piece Camshaft Sprocket Design Featuring a Billet Eccentric Camshaft Dowel Bushing. Both Billet Steel Sprockets are Heat Treated for Durability. Upgraded “”Z”” Chain TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Friction. Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3158AZ-5 (Part No.9-3158AZ-5)

Cloyes Performance High Performance Timing Set, 9-3158AZ-5

from

$372.99
“HEX-A-JUST Allows for Infinite Valve Timing Adjustability of +/-6 Degrees to Tune for Maximum Engine Performance Output. One Piece Camshaft Sprocket Design Featuring a Billet Eccentric Camshaft Dowel Bushing. Both Billet Steel Sprockets are Heat Treated for Durability. Upgraded “”Z”” Chain TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Friction. Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3658TX9ZR (Part No.9-3658TX9ZR)

Cloyes Performance High Performance Timing Set, 9-3658TX9ZR

from

$369.99
“Billet Crankshaft Sprocket Has Nine Keyways for +/- 8 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter “”Z”” Chain for Reduced Friction. “”Z”” Chain Approximately 33% Overall Increased Strength Over the Standard High Performance Chain. “”Z”” Chain Featuring a Press Fit Center Link design that Increases Load Distribution with Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness and Pre-stressed to Increase Fatigue Life. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Block Thrust Surface Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Block Thrust Surface Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3658TX9Z (Part No.9-3658TX9Z)

Cloyes Performance High Performance Timing Set, 9-3658TX9Z

from

$359.99
“Billet Crankshaft Sprocket Has Nine Keyways for +/- 8 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter “”Z”” Chain for Reduced Friction. “”Z”” Chain Approximately 33% Overall Increased Strength Over the Standard High Performance Chain. “”Z”” Chain Featuring a Press Fit Center Link design that Increases Load Distribution with Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness and Pre-stressed to Increase Fatigue Life. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Block Thrust Surface Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Block Thrust Surface Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3658TX3ZR (Part No.9-3658TX3ZR)

Cloyes Performance High Performance Timing Set, 9-3658TX3ZR

from

$339.99
“Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter “”Z”” Chain for Reduced Friction. “”Z”” Chain Approximately 33% Overall Increased Strength Over the Standard High Performance Chain. “”Z”” Chain Featuring a Press Fit Center Link design that Increases Load Distribution with Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness and Pre-stressed to Increase Fatigue Life. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Block Thrust Surface Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3159A (Part No.9-3159A)

Cloyes Performance High Performance Timing Set, 9-3159A

from

$288.99
“HEX-A-JUST Allows for Infinite Valve Timing Adjustability of +/-6 Degrees to Tune for Maximum Engine Performance Output. One Piece Camshaft Sprocket Design Featuring a Billet Eccentric Camshaft Dowel Bushing. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Double Roller 0.250″” Roller Diameter Chain for Reduced Friction. Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3159A-5 (Part No.9-3159A-5)

Cloyes Performance High Performance Timing Set, 9-3159A-5

from

$268.99
“HEX-A-JUST Allows for Infinite Valve Timing Adjustability of +/-6 Degrees to Tune for Maximum Engine Performance Output. One Piece Camshaft Sprocket Design Featuring a Billet Eccentric Camshaft Dowel Bushing. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Double Roller 0.250″” Roller Diameter Chain for Reduced Friction. Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
See More

Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3159AR (Part No.9-3159AR)

Cloyes Performance High Performance Timing Set, 9-3159AR

from

$258.99
“HEX-A-JUST Allows for Infinite Valve Timing Adjustability of +/-6 Degrees to Tune for Maximum Engine Performance Output. One Piece Camshaft Sprocket Design Featuring a Billet Eccentric Camshaft Dowel Bushing. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Double Roller 0.250″” Roller Diameter Chain for Reduced Friction. Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3659X3-10 (Part No.9-3659X3-10)

Cloyes Performance High Performance Timing Set, 9-3659X3-10

from

$257.99
“Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3659X3 (Part No.9-3659X3)

Cloyes Performance High Performance Timing Set, 9-3659X3

from

$236.99
“Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout. 0.005″” and 0.010″” Reduced Length Chains Available, to Order Add -5 or -10 to the End of this Part Number.”
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INA US – INA US , ZC-9-0195SX (Part No.ZC-9-0195SX)

INA US , ZC-9-0195SX

from

$236.99
INA US , ZC-9-0195SX. ENGINE PARTS>TIMING COMPONENTS>TIMING CHAIN SETS>TIMING CHAIN SETS from INA US
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3659X3R (Part No.9-3659X3R)

Cloyes Performance High Performance Timing Set, 9-3659X3R

from

$229.99
“Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3659X3-5 (Part No.9-3659X3-5)

Cloyes Performance High Performance Timing Set, 9-3659X3-5

from

$219.99
“Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
See More

Cloyes Performance – Cloyes Performance High Performance Timing Set, 9-3658TX3 (Part No.9-3658TX3)

Cloyes Performance High Performance Timing Set, 9-3658TX3

from

$215.99
“Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″” Roller Diameter Chain for Reduced Friction. Includes Captured Needle Camshaft Sprocket Thrust Bearing to Minimize Block Thrust Surface Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.”
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Top Picks for 2003 Chevrolet Trailblazer Ext Timing Covers

Invest in one of our 2 durable Timing Covers for your 2003 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

Dorman – Dorman Timing Cover Kit, 635-522 (Part No.635-522)

Dorman Timing Cover Kit, 635-522

from

$118.99
This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards.
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Dorman – Dorman Timing Cover Kit, 635-521 (Part No.635-521)

Dorman Timing Cover Kit, 635-521

from

$174.99
This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards.
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Top-Rated Engine Variable Timing Solenoids for 2003 Chevrolet Trailblazer Exts

Make a smart move for your 2003 Chevrolet Trailblazer Ext with products all priced from $71.99 to $115.99.

Dorman – Dorman Variable Valve Timing Solenoid, 917-010 (Part No.917-010)

Dorman Variable Valve Timing Solenoid, 917-010

from

$87.99
This replacement engine variable valve timing (VVT) solenoid is precision-engineered to match the fit and function of the original VVT solenoid. Made of quality materials for a long service life, it has been tested for proper performance.
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Carquest Premium – Carquest Engine Variable Valve Timing (VVT) Solenoid, VVC1003 (Part No.VVC1003)

Carquest Engine Variable Valve Timing (VVT) Solenoid, VVC1003

from

$71.99
The variable valve timing (VVT) system allows the engine control module (ECM) to regulate the intake and exhaust valve phase angle providing the most optimal engine volumetric efficiency under all engine operating condition to control tailpipe emissions and engine efficiency. Variable valve timing is an emission control device and although there are various methods of operation, the typical device is regulated by oil control valves, actuator solenoids and camshaft phasers.
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GM Genuine Parts – GM Genuine Parts Variable Valve Timing (VVT) Solenoid, 12615873 (Part No.12615873)

GM Genuine Parts Variable Valve Timing (VVT) Solenoid, 12615873

from

$115.99
ACDelco GM Original Equipment Engine Variable Valve Timing Solenoids regulate oil flow to the cam phasers that change the timing of the camshafts. The desired positions of the camshaft varies with engine speed and load and is calibrated for optimal engine performance, drive quality, and efficiency. They are GM-recommended replacements for your vehicle’s original components. These original equipment solenoids have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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NTK – NTK Engine Variable Valve Timing (VVT) Solenoid, VV0012 (Part No.VV0012)

NTK Engine Variable Valve Timing (VVT) Solenoid, VV0012

from

$80.99
Building upon a foundation of premium full-line products established under NGK ignition and oxygen sensor products, NTK’s expansion to technical sensors is part of our ongoing commitment to streamline product types and increase coverage under one premium brand NTK, The Sensor Specialist. With over 80 years of automotive expertise, NGK’s family of automotive products are driven by extreme dedication to innovation, performance and quality. is the only OE supplier with a full line of technical sensors in the aftermarket for import and domestic vehicles. Drawing from OE experience, sensors undergo extreme testing conditions that include thermal shock, vibration and OBD verification. sensors are manufactured to ensure a quality that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for full-line market support and OE application technology.
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Top-Rated Engine Timing Part Brands For Your 2003 Chevrolet Trailblazer Ext

When it comes to finding the perfect Engine Timing Part for your 2003 Chevrolet Trailblazer Ext, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 10 trusted brands. We carry the most popular Engine Timing Part brands including National and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $26.99. Purchasing a Engine Timing Part from us here at Advance Auto Parts is a smart move for both you and your 2003 Chevrolet Trailblazer Ext, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 2003 Chevrolet Trailblazer Ext Engine Timing Parts

If you’re looking for a top-quality Engine Timing Part for your 2003 Chevrolet Trailblazer Ext, Advance Auto Parts has exactly what you need with our selection of National Engine Timing Parts. We have 1 National Engine Timing Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $26.99, you’ll find the perfect Engine Timing Part for your needs and budget. National Engine Timing Parts for the 2003 Chevrolet Trailblazer Ext come highly rated, with over 3 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Engine Timing Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
National Engine Crankshaft Seal, 710551
from $26.99
(3)
National Engine Crankshaft Seal, 710551
“Exact fit,quality part.”

Top-Quality Dorman 2003 Chevrolet Trailblazer Ext Engine Timing Parts

For those in search of a high-quality Engine Timing Part for their 2003 Chevrolet Trailblazer Ext, Advance Auto Parts offers a great selection of Dorman Engine Timing Parts. With 1 Dorman Engine Timing Parts in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Engine Timing Parts start at just $87.99, giving you a range of options to suit your budget. Backed by over 26 customer ratings and an average rating of 4.2 stars, Dorman Engine Timing Parts provide both reliability and excellent performance. Choosing a Dorman Engine Timing Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Dorman Variable Valve Timing Solenoid, 917-010
from $87.99
(26)
Dorman Variable Valve Timing Solenoid, 917-010
“easy to install”

FAQs for 2003 Chevrolet Trailblazer Ext Engine Timing Parts

What are the best-selling Engine Timing Parts for 2003 Chevrolet Trailblazer Exts?

Out of 50 Engine Timing Parts that fit 2003 Chevrolet Trailblazer Exts, the following parts are the top sellers:

What’s the price range for 2003 Chevrolet Trailblazer Ext Engine Timing Parts?

The prices of Engine Timing Parts for the 2003 Chevrolet Trailblazer Ext range from $23.99 up to $428.99 for the most premium parts.

What is the average price of an Engine Timing Part for a 2003 Chevrolet Trailblazer Ext?

The average price for Engine Timing Parts for the 2003 Chevrolet Trailblazer Ext is $167.99. Keep in mind the variety of part types within our Engine Timing Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Engine Timing Parts for other Chevrolet Trailblazer Ext model years?

Yes, we carry Engine Timing Parts for 3 model years of Chevrolet Trailblazer Exts between 2002 and 2006. The following model years are the most popular for Engine Timing Part purchases: 2006, 2005, 2004, and 2002.

What are the cheapest Engine Timing Parts for my 2003 Chevrolet Trailblazer Ext?

The cheapest 2003 Chevrolet Trailblazer Ext Engine Timing Parts we carry are:

Does Advance Auto Parts sell Engine Timing Parts for any other 2003 Chevrolet models?

Yes. We stock Engine Timing Parts for 31 other popular 2003 Chevrolet models. Some of the most popular are 2003 Tahoe Engine Timing Parts, 2003 Impala Engine Timing Parts, 2003 Silverado 1500 Engine Timing Parts, 2003 Malibu Engine Timing Parts, and 2003 Suburban 1500 Engine Timing Parts.

What types of Engine Timing Parts do you sell for my 2003 Chevrolet Trailblazer Ext?

As of 8/2/26, these are some of the most in-demand types of Engine Timing Parts for a 2003 Chevrolet Trailblazer Ext:

Can I get help with 2003 Chevrolet Trailblazer Ext Engine Timing Part orders?

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

What is your return policy for Chevrolet Trailblazer Ext Engine Timing Parts?

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