What is the compression height for these pistons?

These Mahle MS pistons have a compression height of 1.330 inches. This measurement is critical for ensuring the piston sits at the correct level within the cylinder bore relative to the crankshaft and connecting rod.

What material are these pistons made from and why?

The pistons are forged from 2618 aluminum. This material is chosen for its high strength and excellent thermal properties, making it well-suited to withstand the extreme temperatures and pressures found in high-performance engines.

Are these pistons compatible with all LS engines?

This specific set is designed for GM LSX engines with a 376 cubic inch displacement and a 4.065-inch bore. It's important to confirm your engine's specifications match these requirements before purchasing.

Mahle GM LSX Piston Set 4.065" Bore 930227065

Name: Mahle MS Piston Set GM LSX 376cid 4.065x1.330CH 3.622 Stk 6.098 Rod .945 Pin -5.8cc 10.1CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-lsx-376cid-4-065x1-330ch-3-622-stk-6-098-rod-945-pi-t14-348844
Price: 907.99 USD
Availability: BackOrder

Mahle MS Piston Set GM LSX 376cid 4.065x1.330CH 3.622 Stk 6.098 Rod .945 Pin -5.8cc 10.1CR Set of 8

$907.99

On Backorder

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

Mahle MS Piston Set for GM LSX 376 cu in. engines. Features a 4.065" bore and 10.1:1 compression ratio for improved performance.

Key Features

Fits Chevrolet LS 376 cu in. engines.
Mahle MS Piston Set with 4.065 inch bore.
Forged from 2618 aluminum for strength and durability.
Achieves a 10.1:1 compression ratio.
Features a 1.330 inch compression height and -5.8cc valve relief volume.
Includes 0.945 inch wrist pins.

This piston set is designed for Chevrolet LS 376 cubic inch engines. Please verify compatibility with your specific engine build.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

If you're building or rebuilding a GM LSX engine with a 376 cubic inch displacement, this Mahle MS Piston Set is a solid choice for serious performance. Mahle is a well-known name in engine components, and this set is built for demanding applications where reliability and power are key. These pistons are designed to work with a 4.065-inch bore and feature a 1.330-inch compression height, a 6.098-inch rod length, and a 0.945-inch pin diameter. They are forged from 2618 aluminum, a material chosen for its strength and ability to handle high temperatures and pressures common in performance engines.

This set is engineered to achieve a 10.1:1 compression ratio with a -5.8cc valve relief volume, which is a notable bump over stock and contributes to improved power output. Each piston weighs in at 467 grams, a spec that indicates a well-balanced set ready for high-RPM operation. The included 6.098-inch rod length and 0.945-inch pin are critical dimensions that ensure proper fitment and function within the engine's rotating assembly. When installing these, pay close attention to the manufacturer's specifications for ring gap and piston-to-wall clearance to ensure optimal performance and longevity.

This set includes eight pistons, enough for a complete V8 engine. Please note that this piston set is not CARB approved and cannot be shipped to California. Always refer to the Mahle installation instructions for precise details on fitting these pistons into your engine build.