What does '0.75MM undersize' mean for these pistons?

This means the pistons are 0.75 millimeters smaller in diameter than the original factory specification. They are intended for engines that have been bored out to this specific size during an engine rebuild to restore proper cylinder wall clearance.

Do these pistons come with the rings installed?

Yes, these Mahle OE piston sets come with the piston rings already mounted onto the pistons. They also include the necessary piston pins and clips, making them ready for installation by the engine builder.

Are these pistons suitable for a performance build?

These are OE-quality cast pistons designed to meet original equipment specifications for durability and performance in standard engine applications. For high-performance or forced-induction builds, forged pistons are typically recommended.

Mahle OE Piston Set 2243536075MM - GM 5.3L V8

Name: Mahle OE GM 5.3L 325 V8 99-02599171-0.75MM w/ P Piston Set (Set of 8)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-gm-5-3l-325-v8-99-02599171-0-75mm-w-p-piston-set-set-of-8-t14-53511
Price: 316.62 USD
Availability: BackOrder

Mahle OE GM 5.3L 325 V8 99-02599171-0.75MM w/ P Piston Set (Set of 8)

$316.62

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle OE GM 5.3L V8 cast piston set. Features compensated ring grooves for better oil control and reduced engine noise. Set of 8.

Key Features

Fits 1999-2004 Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, and many other GM 5.3L V8 vehicles.
Set includes 8 cast pistons, piston rings (mounted), piston pins, and clips for a complete engine rebuild.
Features compensated ring grooves for proper ring loading and improved oil control.
Expansion-controlled design reduces engine noise, wear, and emissions by maintaining small clearances.
OE quality construction ensures a direct fit and performance matching original equipment.
Pistons are 0.75mm undersize, intended for engines that have been bored out to this specification.

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Will this fit your vehicle?

Product Details

These Mahle OE cast pistons are made to the original equipment specifications for GM 5.3L V8 engines, specifically for the 0.75mm undersize. They feature compensated ring grooves, which help ensure the piston rings are loaded correctly for better oil control and reduced blow-by. This design also helps maintain proper ring seal as the engine heats up.

Mahle builds these pistons with expansion-controlled designs. This means they're engineered to have small fitting clearances when cold, which helps reduce engine noise, wear, and emissions once the engine reaches operating temperature. This set comes with the piston rings already mounted, and includes the piston pins and clips, making them ready for installation right out of the box. Mahle is a major OE supplier, so you're getting a well-built part that matches the original equipment.

This piston set fits a wide range of GM trucks and SUVs from 1999 through 2004, including popular models like the Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Tahoe. If you're rebuilding the engine in one of these vehicles, this set offers a direct replacement for your original pistons.