What material are these Mahle pistons made from?

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

What is the compression ratio achieved with this piston set?

With a -16cc dish volume and the specified bore and stroke, this piston set is designed to achieve a compression ratio of approximately 8.9:1. This is a common target for many performance LS engine builds.

Are these pistons compatible with all GM LS engines?

This piston set is specifically designed for GM LS engines with a 348 cubic inch displacement, such as the Chevrolet LS 348 cu in. It's important to verify your engine's specifications to ensure proper fitment.

Mahle GM LS Piston Set 3.908in Bore 930219008

Name: Mahle MS Piston Set GM LS 347ci 3.908in Bore 3.622stk 6.125in Rod .927 Pin -16cc 8.9 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-gm-ls-347ci-3-908in-bore-3-622stk-6-125in-rod-927-pin--t14-29000
Price: 882.30 USD
Availability: BackOrder

Mahle MS Piston Set GM LS 347ci 3.908in Bore 3.622stk 6.125in Rod .927 Pin -16cc 8.9 CR Set of 8

$882.30

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 347ci 3.908in Bore 3.622stk 6.125in Rod .927 Pin -16cc 8.9 CR Set of 8

Key Features

This is a set of eight Mahle MS forged pistons for GM LS engines.
Features a 3.908-inch bore and a 3.622-inch stroke.
Designed to work with a 6.125-inch connecting rod and a .927-inch wrist pin.
Includes a -16cc dish volume for a calculated 8.9:1 compression ratio.
Constructed from 2618 aluminum for strength and durability.
Each piston weighs approximately 414 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

This Mahle MS Piston Set is built for GM LS engines, specifically for builds targeting around 347 cubic inches. You get a complete set of eight forged pistons, ready to be installed in your performance engine. These pistons are designed with a 3.908-inch bore and a 3.622-inch stroke, working with a 6.125-inch connecting rod and a .927-inch wrist pin. The -16cc dish volume and the resulting 8.9:1 compression ratio are key figures for builders aiming for a specific compression target in their naturally aspirated or forced induction setups.

Mahle uses 2618 aluminum for these pistons, a well-known material in high-performance applications for its strength and durability under demanding conditions. Each piston weighs in at approximately 414 grams, which is a notable weight for a forged piston of this size, contributing to overall engine balance. The design accounts for a 1.314-inch compression height, ensuring proper deck clearance when paired with the specified rod and stroke. This set is a solid option for engine rebuilds where reliability and performance are paramount, offering a strong foundation for your LS engine project.

When installing these pistons, remember they are designed for specific clearances and require careful attention to detail during assembly. It's always recommended to consult your engine builder or the manufacturer's detailed installation guidelines to ensure optimal performance and longevity. Please note that this piston set is not CARB approved and cannot be shipped to California.