Description

Chevy 5.3 Rebuild Kit – 325 V8 2003

Restore performance and reliability with this Chevy 5.3 rebuild kit, designed for GM 325 V8 engines used in 2003 truck and SUV applications. This engine is part of GM’s LS-based Vortec platform, known for strong performance, durability, and efficiency.

This rebuild kit provides the essential internal components required for a complete engine refresh, making it a practical solution for maintaining performance while retaining existing valvetrain components when appropriate.

Browse additional options on our engine rebuild kits hub page to find the right kit for your build.

What’s Included in This Chevy 5.3 Rebuild Kit

• Piston Set
• Piston Ring Set
• Rod Bearing Set
• Main Bearing Set
• Cam Bearing Set
• Full Gasket Set
• Timing Components
• Oil Pump
• Expansion Plug Kit

Related Engine Rebuild Kits

Looking for similar engine rebuild kits? Explore these related truck engine options:

• Chevy 5.3L 325 early rebuild kit
• Chevy 5.3L 325 truck rebuild kit
• Chevy 5.3L 325 V8 rebuild kit
• Chevy 6.0L 364 LS rebuild kit

Available Sizes & Options

This rebuild kit is available in multiple size configurations to match your engine machining specifications.

Pistons & Ring Sizes (Oversize)

• Standard (STD)
• .020 Oversize
• .030 Oversize
• .040 Oversize
• .060 Oversize

Rod Bearing Sizes (Undersize)

• Standard (STD)
• .010 Undersize
• .020 Undersize
• .030 Undersize

Main Bearing Sizes (Undersize)

• Standard (STD)
• .010 Undersize
• .020 Undersize
• .030 Undersize

Engine Fitment & Notes

• Engine: GM Chevy 5.3L / 325 V8
• Configuration: V8 (LS-based platform)
• Year: 2003
• Application: Truck / SUV
• Note: Late 2003 design with cam bearing variations depending on application

Why Choose This Kit?

This Chevy 5.3 rebuild kit provides a cost-effective solution for restoring engine performance while maintaining the reliability and strength of the LS-based Vortec platform.

• ✔ Complete rebuild solution (without camshaft/lifters)
• ✔ Designed for GM 5.3L LS-based engines
• ✔ Ideal for truck and SUV rebuilds
• ✔ Precision-fit components

Not sure which sizes you need? Review our engine rebuild kits guide or learn more about proper measurements in our bearing clearance guide.

Need help selecting sizes or confirming fitment? Contact Benning Auto Parts @ 1-800-847-0733 for expert assistance.