2003 Hummer H2 Engine Parts

Essential 2003 Hummer H2 Engine Parts

Sealed Power – Engine Valve Spring Retainer Keeper (Part No.VK-291)

Engine Valve Spring Retainer Keeper

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$0.65
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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Dorman – Valve Covers: With Gasket, Direct Replacement, Aluminum, Driver Side (Part No.264-969)

Valve Covers: With Gasket, Direct Replacement, Aluminum, Driver Side

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$92.99
This replacement valve cover matches the fit and function of the original equipment part that may be damaged or warped. Made from quality materials for excellent fit and superior heat resistance, this valve cover has undergone extensive testing.

Product Features:
  • Direct replacement – this valve cover matches the original equipment part for fit and function
  • Durable construction – this valve cover is made of quality materials to withstand extreme temperatures to resist leaking
  • Cost-effective solution – offers original equipment performance at competitive price
  • Quality tested – this part has undergone try-on and material testing to ensure a quality fit and reliable service
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Dorman – Timing Cover Kit – Includes Gasket (Part No.635-517)

Timing Cover Kit - Includes Gasket

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$55.99
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.

Product Features:
  • Direct replacement – this engine timing cover matches the fit and function of the original equipment cover
  • Durable construction – this part is specifically designed to withstand extreme underhood temperatures for a long service life
  • Cost-effective solution – offers original equipment quality at a competitive price
  • Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life
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Felpro – Engine Lifter Valley Cover Gasket Set (Part No.MS 92465)

Engine Lifter Valley Cover Gasket Set

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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
  • Engineered and manufactured specifically for repair applications
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
  • Includes all parts needed to complete the repair
  • Includes all parts needed to complete the repair
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Cloyes Performance – High Performance Timing Set (Part No.9-3159AR)

High Performance Timing Set

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$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.

Product Features:
  • The complete kits, which meet or exceed OEM performance requirements, ensure a quiet and maintenance-free experience
  • Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
  • Cloyes Timing Kits may include camshaft sprockets, crankshaft sprockets, timing chains, tensioners, and guides
  • Refer to our online catalog for detailed application-specific information
  • Keep your engine’s valve train in perfect time with Cloyes, the world leader in timing drive systems.
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Mahle – Valve Stem Seal Kit (Part No.A8069849331MAH)

Valve Stem Seal Kit

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$40.12
Valve Stem Seal Kit

Felpro – CYLINDER HEAD BOLT SET (Part No.ES 72173)

CYLINDER HEAD BOLT SET

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$34.99
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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Cloyes Performance – Engine Camshaft Thrust Button (Part No.9-232)

Engine Camshaft Thrust Button

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$18.99
Replacement Captured Needle Thrust Bearing for LS Applications; Meets or exceeds OEM performance requirements; Cloyes utilizes the latest in design and material technology, ensuring quiet and maintenance-free experience.

Product Features:
  • Replacement Captured Needle Thrust Bearing for LS Applications
  • Meets or exceeds OEM performance requirements
  • Cloyes utilizes the latest in design and material technology, ensuring quiet and maintenance-free experience.
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Dorman – Camshaft Phaser- Variable Timing Camshaft Gear (Part No.918-186)

Camshaft Phaser- Variable Timing Camshaft Gear

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$161.99
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.

Product Features:
  • Direct replacement – this VVT sprocket fits and performs like the original sprocket
  • Durable construction – made from durable steel and precision machined for reliable performance
  • 100% new – this variable valve timing sprocket is entirely new, not a remanufactured part
  • Quality assured – vehicle-specific application has been validation tested to ensure quality
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Felpro – CAMSHAFT THRUST PLATE SEAL SET (Part No.ES 73115)

CAMSHAFT THRUST PLATE SEAL SET

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$41.49
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
  • Application specific design to ensure a perfect fit
  • Engineered for the sealing repair environment
  • Validated for fit, form and function
  • Unsurpassed quality you can trust
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Sealed Power – Engine Connecting Rod Bearing (Part No.2555A 30)

Engine Connecting Rod Bearing

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$7.29
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.

Product Features:
  • A-Series bi-metal aluminum alloy
  • Greater seizure resistance than tri-metal material
  • Dramatically reduces or eliminates bearing wear
  • Made with silicon to provide greater surface hardness
  • Silicon particles help polish crankshaft journal to further reduce wear during operation
  • Utilizes ISO & QS certified manufacturing
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Sealed Power – Engine Push Rod (Part No.RP-3349)

Engine Push Rod

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$6.29
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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NTK – Camshaft Position Sensor (Part No.EC0099)

Camshaft Position Sensor

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$64.99
The Camshaft Position Sensor plays a vital role in your engine’s operation; to determine the exact position and speed of the camshaft(s) to the ECM. The ECM uses this information to determine fuel and spark timing as well as VVT operation. A failed sensor can result in a check engine light, hard starting or failure to start, increased vehicle emissions and engine misfire. NTK Camshaft Position Sensors are a premium quality product with outstanding support and leading innovation bred from our OE heritage.

Product Features:
  • THE NTK DIFFERENCE: Enhanced, robust circuit board traces and precision-wound coated-copper windings increase durability, longevity and performance
  • OE QUALITY: Designed to meet or exceed OE specifications, fit, form and function to ensure proper position and/or rotating speed of the camshaft
  • EXTENSIVE TESTING: 100 percent thermal shock and vibration tested for best in class performance and reliability in the most extreme conditions
  • PRODUCT ENGINEERING: Premium seals prevent leaks or corrosion, while optimized magnet size and strength ensures precise, consistent signal output
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Sealed Power – Main Bearing Set (Part No.152M)

Main Bearing Set

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$145.99
Speed-Pro delivers the power you need and the value and quality that you deserve. Whether you are running at the track, chasing trophies on the strip, or just cruising down the road, count on Speed-Pro to provide the best value in HP engine components

Product Features:
  • H14 Super Duty alloy material
  • Best bronze alloy material
  • Does not have flash tin plating
  • Extreme fatigue resistance & strength
  • Application specific design to ensure a perfect fit and correct operation for unsurpassed quality that you can trust
  • Silicon particles help polish crankshaft journal (reduces wear during operation)
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Anchor – Engine Mount: Front Left, Front Right, 1 Piece (Part No.2909)

Engine Mount: Front Left, Front Right, 1 Piece

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$56.99
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 CADI 02-06; CHEV 99-19; GMC 99-13; HUMMER 03-09;. 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: 1999-2019
  • Weight approx: 5 Lbs
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Dorman – Help – Engine Oil Filler Cap (Part No.42315)

Engine Oil Filler Cap

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$13.99
This engine oil filter cap is designed to match the fit and function of the original cap on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this engine oil filter cap is designed to match the fit and function of the original cap on specified vehicles
  • Restores functionality – reliable replacement for an original part that is missing or cracked due to heat and fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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ACDelco – Oil Filler Cap Gaske (Part No.A6150209855ACD)

Oil Filler Cap Gaske

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$5.22
Oil Filler Cap Gaske

ARP Auto Racing – ARP Harmonic Damper Bolt Kit (Part No.234-2503)

ARP Harmonic Damper Bolt Kit

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$41.49
As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in place, ARP has developed these ultra-strong 200,000 psi bolts that let you exert maximum clamping force. Special features include 1/4′ thick, wide area washer and an extra tall 12-point head that accepts a deep socket and eliminates the worry of stripping the head.

Product Features:
  • 1-1/16″ 12-Point Socket Size(s)
  • 8740 Chromoly
  • Black Oxide
  • Chevy LS1/LS6
  • Sold Individually
  • M16 x 2.0 Thread Size
  • 4.325″ Underhead Length
  • 200,000 PSI
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ACDelco – GM Original Equipment Body Control Module (Part No.P4070578225ACD)

GM Original Equipment Body Control Module

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$365.93
An ACDelco GM Original Equipment Body Control Module is a GM-recommended replacement for your vehicle’s original component. It communicates with other systems in your vehicle to regulate electronic devices. This original equipment body control module has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • This part requires programming and/or special setup procedures. GM Service Information or equivalent describes the procedures and special tools needed to ensure proper operation in the vehicle
  • Dictates the operation of your vehicle’s vital systems, which is critical to the performance of your vehicle
  • 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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MAHLE Original – Camshaft Cover Plate (Part No.B32270)

Camshaft Cover Plate

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$27.99
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
  • 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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Felpro – Engine Conversion Gasket Set (Part No.CS 9284)

Engine Conversion Gasket Set

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$216.99
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:
  • Conversion Sets (CS) provide every gasket for lower engine work – add a Head Set (HS) for complete engine overhaul work
  • Application specific design to ensure a perfect fit
  • Meets or exceeds all original equipment specifications
  • Validated for fit, form and function
  • Unsurpassed quality you can trust
  • Includes all the parts necessary to complete the repair unless otherwise noted
  • Includes all the parts necessary to complete the repair unless otherwise noted
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ACDelco – GM Original Equipment Valve Cover Gasket (Part No.A8030432024ACD)

GM Original Equipment Valve Cover Gasket

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$33.19
The ACDelco GM Original Equipment Valve Cover 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’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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Felpro – Multi-Purpose O-Ring (Part No.72401)

Multi-Purpose O-Ring

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$5.49
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
  • Application specific 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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ACDelco – GM Original Equipment Engine Oil Pan Gasket (Part No.A6130409907ACD)

GM Original Equipment Engine Oil Pan Gasket

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$79.06
ACDelco GM Original Equipment Engine Oil Pan 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’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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ACDelco – GM Original Equipment Engine Hydraulic Cam Follower (Part No.A4010352802ACD)

GM Original Equipment Engine Hydraulic Cam Follower

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$63.05
The ACDelco GM Original Equipment Engine Hydraulic Valve Adjuster/Valve Lifter is a GM-recommended replacement for your vehicle’s original component. It automatically maintains a Zero valve lash condition, preventing valve train noise and unnecessary valve train component wear. This original equipment engine hydraulic valve adjuster/valve lifter has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors. Stay with the brand of parts your General Motors vehicle came with and get peace of mind that the fit, form, and function is up to the high standards and specifications of General Motors. This is important on these types of high-labor-hour repairs because the part designs are enhanced to incorporate GM OE updates, upgrades, and Technical Service Bulletins. Only ACDelco can offer complete late-model coverage and all ACDelco GM OE Engine Components.

Product Features:
  • Adjusts the valves on your vehicle’s engine for proper performance
  • 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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ACDelco – GM Original Equipment Engine Oil Cooler (Part No.A6070579820ACD)

GM Original Equipment Engine Oil Cooler

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$295.23
ACDelco GM Original Equipment Engine Oil Coolers are heat exchangers, and are GM-recommended replacements for your vehicle’s original components. These heat exchangers transfer heat to and from the vehicle engine oil to the engine coolant or ambient air. This keeps the engine oil temperature within the designed operating range, which improves engine efficiency and longevity. These original equipment engine oil coolers have been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Maintain proper engine oil operating temperatures
  • 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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Popular 2003 Hummer H2 Engine Parts Categories

2003 Hummer H2 Engine Parts

You count on your 2003 Hummer H2 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Engine Parts. With 199 Engine Parts ranging in price from $0.65 to $4,863.99, you’re sure to find everything you need for your 2003 Hummer H2.

Brands matter. If you want to shop a specific Engine Parts brand, we stock 24 different brands like Felpro, Dorman, and Sealed Power. 2003 Hummer H2 Engine Parts start as low as $0.65!

One of the best ways to find top quality OEM or aftermarket Engine Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 620 extensive product reviews on 2003 Hummer H2 Engine Parts. Some of the top-rated Engine Parts products we carry are Multi-Purpose O-Ring with 4.9 stars and Stock Replacement OE Type Oil Pump with 4.5 stars.

Did we mention you can order your Engine Parts from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Engine Parts inventory for your 2003 Hummer H2 below to get started!

Top-Rated Engine Parts Brands For Your 2003 Hummer H2

Trusted Engine Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 Hummer H2 running right for years to come. In our inventory you’ll find brands like Felpro, Dorman, Sealed Power, and even more.

Popular National Engine Parts

You’ll find popular National brand products across Engine Internals. All are waiting to get your 2003 Hummer H2 back on the road. Some of the top-rated National products in these categories are:
Multi Purpose Seal
from $10.29
(7)
Multi Purpose Seal
Crankshaft Seals
Multi Purpose Seal
from $28.99
(7)
Multi Purpose Seal
Crankshaft Seals
Shaft Repair Sleeve
from $43.99
(2)
Shaft Repair Sleeve
Power Take Off Shaft Seal

FAQs for 2003 Hummer H2 Engine Parts

What are the most purchased Engine Parts for the 2003 Hummer H2?

Out of 199 Engine Parts for the 2003 Hummer H2, the most popular in our inventory are:
TIMING COVER GASKET SET
from $51.99
(42)
TIMING COVER GASKET SET
Timing Cover Gasket Sets
Engine Crankshaft Seal Kit
from $41.99
(31)
Engine Crankshaft Seal Kit
Rear Main Seal Sets
Rear Main Seal Cover Kit
from $74.99
(19)
Rear Main Seal Cover Kit
Rear Main Seal Sets

What are the top-rated 2003 Hummer H2 Engine Parts?

Top-rated Engine Parts for your 2003 Hummer H2 based on customer reviews/ratings are:
Multi-Purpose O-Ring
from $5.49
(41)
Multi-Purpose O-Ring
“Saved thousands on a motor rebuild”
Stock Replacement OE Type Oil Pump
from $121.99
(26)
Stock Replacement OE Type Oil Pump
“Updated design over factory took care of the small ticking sound in engine”
Engine Oil Filler Cap: 10099, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack
from $9.99
(22)
Engine Oil Filler Cap: 10099, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack
“Fit my 2006 Chevy Cobalt perfectly and for the cheap price it couldn’t be a better deal. I highly reccommend it. Also the AAP guy who sold it to me ma”