What is the compression ratio with these pistons?

These Mahle pistons are designed to achieve a 12.6:1 compression ratio when used with a 12cc dish volume and appropriate cylinder heads for a 376 cubic inch GM LS engine.

What material are these pistons made from?

The pistons are forged from 2618 aluminum, a material chosen for its high strength and resistance to expansion under extreme heat and pressure found in performance engines.

Can these pistons be shipped to California?

No, these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle GM LS Piston Set 197714865 - 376ci 4.065in Bore

Name: Mahle MS Piston Set GM LS 376ci 4.065in Bore 3.622in Stk 6.125in Rod .927 Pin 12cc 12.2 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-ls-376ci-4-065in-bore-3-622in-stk-6-125in-rod-927-p-t14-29210
Price: 1033.69 USD
Availability: BackOrder

Mahle MS Piston Set GM LS 376ci 4.065in Bore 3.622in Stk 6.125in Rod .927 Pin 12cc 12.2 CR Set of 8

$1033.69

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 GM LS 376ci 4.065in Bore 3.622in Stk 6.125in Rod .927 Pin 12cc 12.2 CR Set of 8Engine Piston Set

Key Features

Fits Chevrolet LS 376 cu in engines.
Forged from 2618 aluminum for strength and durability.
Features a 4.065-inch bore and 3.622-inch stroke.
Designed for a 6.125-inch connecting rod and 0.927-inch wrist pin.
Achieves a 12.6:1 compression ratio with a 12cc dish volume.
Each piston weighs approximately 490 grams.

⚠️ 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

Forged from 2618 aluminum, this Mahle MS piston set is built for GM LS engines displacing 376 cubic inches. The pistons feature a 4.065-inch bore and a 3.622-inch stroke, designed to work with a 6.125-inch connecting rod and a 0.927-inch wrist pin. This combination results in a compression ratio of 12.6:1 with a 12cc dish volume, making them suitable for high-performance applications where increased compression is desired.

Each piston weighs approximately 490 grams, contributing to a well-balanced rotating assembly. The 2618 aluminum alloy is known for its strength and durability under high temperatures and pressures, common in performance engine builds. This set includes all eight pistons needed for a complete engine rebuild, ensuring consistent performance across all cylinders. These pistons are designed for a direct fit in 376 cubic inch Chevrolet LS engines.

It's important to note that this piston set is not CARB approved and cannot be shipped to California. For optimal performance and longevity, ensure proper assembly procedures and component matching are followed according to your engine build specifications.