What does '.50MM oversize' mean for these pistons?

This means the pistons are manufactured to be 0.50 millimeters larger in diameter than the standard factory size. They are intended for use when the engine cylinders have been bored out to match this larger diameter, typically to clean up wear or damage and restore proper piston-to-wall clearance.

Do these pistons come with everything needed for installation?

Yes, this set includes the pistons with the piston rings already mounted, as well as the necessary piston pins and clips. This provides a convenient, ready-to-install package for your engine rebuild.

Are these pistons suitable for a performance build?

Mahle OE pistons are built to original equipment specifications, focusing on reliability and proper function for everyday driving. While they are well-made and suitable for a standard engine rebuild, for high-performance applications with significantly increased power output, you might consider Mahle's dedicated performance piston lines.

Mahle OE GM 4.8L 5.3L Piston Set .50MM 2243729050MM

Name: Mahle OE GM 4.8L / 5.3L 05-09 fits LMG LC9 LY5 & LMF .50MM Piston Set (Set of 8)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-gm-4-8l-5-3l-05-09-fits-lmg-lc9-ly5-lmf-50mm-piston-set-set-of-t14-53259
Price: 561.20 USD
Availability: BackOrder

Mahle OE GM 4.8L / 5.3L 05-09 fits LMG LC9 LY5 & LMF .50MM Piston Set (Set of 8)

$561.20

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 4.8L / 5.3L 05-09 fits LMG LC9 LY5 & LMF .50MM Piston Set (Set of 8). For engine rebuilds needing precise piston sizing.

Key Features

Fits 2005-2009 GM 4.8L and 5.3L engines.
Pistons are .50MM oversize for use in bored cylinders.
Includes compensated ring grooves for proper ring loading and oil control.
Features expansion-controlled designs for reduced noise and wear.
Comes with piston rings pre-mounted for easier installation.
Includes piston pins and clips.

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Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your 2005-2009 GM truck or SUV, like a Silverado, Sierra, Tahoe, or Yukon, and need to account for previous machining or wear, this Mahle OE piston set is a solid choice. These pistons are specifically sized at .50MM oversize, meaning they are designed to fit cylinders that have been bored out by that amount. Mahle is a major OE supplier, so you're getting pistons that meet the original equipment specifications for your 4.8L or 5.3L engine.

What sets these Mahle pistons apart is their attention to detail, which translates directly to engine performance and longevity. They feature compensated ring grooves, which ensure the piston rings are loaded correctly for optimal oil control and sealing. The expansion-controlled design allows for tight clearances when the engine is cold, reducing noise and wear, while also helping to manage emissions and oil consumption as the engine warms up. This set comes complete with the piston rings already mounted, along with the necessary pins and clips, making the installation process more convenient for the engine builder.

Because these are OE-quality pistons, they are built to the same standards as the parts that originally came in your vehicle. This means you can expect them to perform reliably and integrate seamlessly into your engine rebuild. This set includes pistons for all eight cylinders, ready to be installed in a wide range of GM vehicles from that era.