What is included in this Mahle piston set?

This Mahle MS Piston Set includes eight pistons. It is designed for GM LT1 engines and is compatible with LT1, L86, and LT4 cylinder heads. The set is configured for a 379 cubic inch displacement.

What compression ratio do these pistons create?

These pistons feature a flat-top design with a -4.5cc dish. When used with compatible cylinder heads and a 3.622-inch stroke crankshaft, they contribute to an 11.6:1 compression ratio.

Can these pistons be shipped to California?

No, these pistons are not CARB approved and cannot be shipped to California. Please check local regulations and consult with your engine builder regarding compliance for your specific build.

Mahle GM LT1 Piston Set 4.080in Bore 930228780

Name: Mahle MS Piston Set GM LT1 379ci 4.080in Bore 3.622in Stk 6.125in Rod -4.5cc 11.6 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-lt1-379ci-4-080in-bore-3-622in-stk-6-125in-rod-4-5c-t14-461507
Price: 1024.61 USD
Availability: BackOrder

Mahle MS Piston Set GM LT1 379ci 4.080in Bore 3.622in Stk 6.125in Rod -4.5cc 11.6 CR Set of 8

$1024.61

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 LT1 379ci engines. 4.080in bore, 11.6 CR. Set of 8.

Key Features

This is a set of 8 Mahle MS pistons for GM LT1 engines.
Designed for a 379 cubic inch displacement with a 4.080 inch bore.
Features a flat-top piston design with a -4.5cc dish.
Achieves an 11.6:1 compression ratio with compatible components.
Constructed from 2618 aluminum alloy for strength and durability.
Each piston weighs 485 grams and uses a 0.927 inch pin.

This piston set is designed for Chevrolet LT 379 cu in. 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

This Mahle MS Piston Set is designed for GM LT1 engines displacing 379 cubic inches. You get a complete set of eight pistons, ready to be installed in your build. These pistons are engineered to work with GM LT1, L86, and LT4 heads, making them a solid choice for a wide range of performance applications. They feature a flat-top design with a -4.5cc dish, contributing to an 11.6:1 compression ratio when paired with compatible heads and a 3.622-inch stroke crankshaft.

Mahle uses a well-known 2618 aluminum alloy for these pistons, a material chosen for its strength and durability under high performance conditions. Each piston measures 4.080 inches in bore diameter and uses a 0.927-inch pin. The overall weight of each piston is 485 grams, which is a good balance for performance and reliability. The 6.125-inch rod length specification is also factored into the design. This set is built for engines that demand robust internal components, especially when pushing beyond stock power levels.

When rebuilding or upgrading your GM LT1 engine, choosing reliable internal components is key. This Mahle piston set offers a specific compression ratio and bore size that can be crucial for achieving your desired engine performance. Remember that these pistons are not CARB approved and cannot be shipped to California. Always consult your engine builder or a trusted mechanic to ensure these pistons are the right fit for your specific build goals and supporting components.