What material are these Mahle pistons made from?

These Mahle MS pistons are constructed from 2618 aluminum. This alloy is chosen for its strength and durability, making it well-suited for high-performance engine applications.

What is the compression ratio achieved with these pistons?

When used with a 6.125-inch rod and a 0.927-inch pin, these pistons contribute to a 13.3:1 compression ratio due to their 9.2cc dish volume.

Are these pistons legal for use in California?

No, these pistons are not CARB approved and cannot be shipped to California. It is important to check local regulations regarding emissions compliance for engine components.

Mahle LS Piston Set 4.005in Bore 930229605

Name: Mahle MS Chevrolet LS 6.8L 403cid 4.005in Bore x 1.110RCH 4.000 Stroke 9.2cc 13.3CR - Pist Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-chevrolet-ls-6-8l-403cid-4-005in-bore-x-1-110rch-4-000-stroke-9-2-t14-714399
Price: 987.55 USD
Availability: BackOrder

Mahle MS Chevrolet LS 6.8L 403cid 4.005in Bore x 1.110RCH 4.000 Stroke 9.2cc 13.3CR - Pist Set of 8

$987.55

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 Chevrolet LS 6.8L 403cid forged piston set. Forged 2618 aluminum construction.

Key Features

This product is a set of eight Mahle MS forged pistons.
Designed for Chevrolet LS 6.8L (403 cubic inch) engines.
Features a 4.005-inch bore and a 4.000-inch stroke.
Includes a 9.2cc dish volume, contributing to a 13.3:1 compression ratio.
Constructed from 2618 aluminum for strength and durability.
Each piston weighs 456 grams.

This piston set is designed for Chevrolet LSX 403 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 is a set of eight Mahle MS forged pistons designed for Chevrolet LS 6.8L (403 cubic inch) engines. You get the pistons themselves, ready to be installed in your build. These pistons feature a 4.005-inch bore and a 4.000-inch stroke, with a 9.2cc dish volume that results in a 13.3:1 compression ratio when paired with a 6.125-inch rod and a 0.927-inch pin. They are constructed from 2618 aluminum, a material known for its strength and durability under high stress conditions, making them a solid choice for performance applications where reliability is key.

The Mahle MS series pistons are built for demanding engine builds. The 2618 aluminum alloy offers excellent thermal expansion properties, which helps maintain proper clearances at operating temperatures, reducing the risk of piston slap and improving overall engine longevity. Each piston weighs in at 456 grams, contributing to a balanced rotating assembly. This set is specifically engineered for the LS platform, ensuring a direct fit for the intended engine configurations.

When planning your engine build, remember that these pistons are not CARB approved and cannot be shipped to California. It's always a good idea to consult your engine builder or a trusted mechanic to ensure these pistons are the right fit for your specific camshaft, cylinder head, and crankshaft combination to achieve your desired performance goals and compression ratio.