What is included in this Mahle piston set?

This Mahle MS Piston Set includes eight forged pistons. It also specifies the wrist pin size, bore, stroke, rod length, and dish volume for each piston.

What is the compression ratio achieved with these pistons?

When installed in the appropriate Ford 349 cubic inch engine configuration with the specified stroke and rod length, these pistons achieve a 10.1 compression ratio due to their -6.5cc dish volume.

Are these pistons street legal in California?

No, these pistons are not CARB approved and cannot be shipped to California. They are intended for competition or off-road use.

Mahle Ford 349ci Piston Set 930245740

Name: Mahle MS Piston Set Ford 349CI 4.040 Bore 3.400stk 5.400Rod .927 Pin -6.5cc 10.1 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-ford-349ci-4-040-bore-3-400stk-5-400rod-927-pin-6-5cc--t14-208146
Price: 833.52 USD
Availability: BackOrder

Mahle MS Piston Set Ford 349CI 4.040 Bore 3.400stk 5.400Rod .927 Pin -6.5cc 10.1 CR Set of 8

$833.52

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 Ford 349ci engines. Features a 4.040" bore and 10.1 compression ratio for improved performance.

Key Features

This set includes eight Mahle MS forged pistons.
Designed for Ford 349 cubic inch Small Block engines.
Features a 4.040 inch bore size.
Built to accommodate a 3.400 inch stroke and 5.400 inch rod.
Utilizes a 0.927 inch wrist pin.
The piston dish volume is -6.5cc, yielding a 10.1 compression ratio.

This piston set is designed for Ford 349 cubic inch Small Block 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 includes eight forged pistons, designed for Ford 349 cubic inch engines. These pistons feature a 4.040 inch bore and are built to work with a 3.400 inch stroke and a 5.400 inch rod, utilizing a 0.927 inch pin. The dish volume is -6.5cc, resulting in a 10.1 compression ratio when installed in the specified engine configuration.

Mahle uses 2618 aluminum alloy for these pistons, a strong material commonly chosen for high-performance applications due to its durability and resistance to expansion under extreme heat. Each piston weighs approximately 415 grams, contributing to a well-balanced rotating assembly. This set is a solid option for engine rebuilds where enhanced performance and reliability are key goals, offering a significant upgrade over stock components for those looking to push their Ford Small Block engine further.

When rebuilding your engine with these pistons, ensure you follow the manufacturer's specifications for ring gap, bearing clearance, and piston-to-wall clearance to achieve optimal performance and longevity. This set is intended for competition or off-road use and is not CARB approved, meaning it cannot be shipped to California.