What is the compression ratio with these pistons?

These Mahle pistons are designed to achieve a 10.7:1 compression ratio when used with the appropriate crankshaft stroke and cylinder head volume for an LS3 engine.

What material are these pistons made from?

The pistons are constructed from 2618 aluminum, a material known for its strength and durability in high-performance engine applications.

Are these pistons legal for use in California?

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

Mahle LS3 Flat Top Piston Set 4.06" Bore 10.7 CR 197739265

Name: Mahle MS Trans AM TA2 LS3 Flat Top Piston Set 4.06 Bore 3.622 Stroke-.4cc 10.7 CR Set of 8 Powerpak+
Brand: Mahle
SKU: mahle-mahle-ms-trans-am-ta2-ls3-flat-top-piston-set-4-06-bore-3-622-stroke-4cc-1-t14-483562
Price: 1015.44 USD
Availability: BackOrder

Mahle MS Trans AM TA2 LS3 Flat Top Piston Set 4.06 Bore 3.622 Stroke-.4cc 10.7 CR Set of 8 Powerpak+

$1015.44

On Backorder

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

Mahle LS3 Flat Top Piston Set for Chevrolet LS 376 cu in. Features a 4.06" bore and 10.7:1 compression ratio.

Key Features

Fits Chevrolet LS 376 cu in. engines.
Flat top piston design with -0.4cc dish volume.
4.065 inch bore size.
Designed for a 3.622 inch stroke.
Achieves a 10.7:1 compression ratio.
Constructed from strong 2618 aluminum.

This piston set is designed for Chevrolet LS 376 cu in. engines. Please verify compatibility with your specific engine configuration.

⚠️ 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

With a -0.4cc dish volume, these Mahle MS Trans AM TA2 LS3 flat-top pistons are built for performance applications, specifically for the LS3 engine. They feature a 4.065-inch bore and are designed to work with a 3.622-inch stroke, creating a 376 cubic inch displacement. The pistons are constructed from 2618 aluminum, a well-known material for its strength and durability in high-performance engines, and each piston weighs in at 513 grams. This set is engineered to achieve a 10.7:1 compression ratio, making it a solid choice for builders looking for improved power output from their LS-based engine.

This PowerPak+ set includes eight pistons, each with a 1.330-inch compression height and a 0.945-inch wrist pin. The gas-ported design helps to reduce ring land pressure, which can lead to better ring seal and reduced oil consumption under demanding conditions. Mahle has a long-standing reputation for producing reliable engine components, and this piston set is no exception, offering a well-built option for engine rebuilds and performance builds where precision and strength are paramount.

When installing these pistons, ensure you follow the manufacturer's recommended clearances and lubrication procedures. Remember that this piston set is not CARB approved and cannot be shipped to California. Always consult your engine builder or a professional mechanic to confirm compatibility with your specific build and ensure proper installation for optimal performance and longevity.