What is the compression ratio with these pistons?

These Mahle pistons feature a -20.5cc dish volume. When used with compatible cylinder heads and crankshafts, they achieve a 10.6:1 compression ratio, suitable for various performance engine builds.

What material are these pistons made from?

The pistons are constructed from 2618 aluminum alloy. This material is chosen for its strength and ability to withstand the thermal expansion common in high-performance engines.

Are these pistons compatible with all Ford engines?

No, these pistons are specifically designed for the Ford Godzilla 446 cubic inch engine. It is crucial to verify fitment for your specific engine application before purchase.

Mahle Ford 446cid Forged Piston Set 930266425

Name: Mahle MS Pistons Ford 446cid 4.225in Bore 3.976 Stroke 6.319 Rod 0.990 Pin -20.5cc 10.6 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-pistons-ford-446cid-4-225in-bore-3-976-stroke-6-319-rod-0-990-pin-t14-539383
Price: 1012.72 USD
Availability: BackOrder

Mahle MS Pistons Ford 446cid 4.225in Bore 3.976 Stroke 6.319 Rod 0.990 Pin -20.5cc 10.6 CR Set of 8

$1012.72

On Backorder

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

Mahle forged piston set for Ford Godzilla 446cid engines. Set of 8.

Key Features

Fits Ford Godzilla 446 cu in. engines.
Set includes eight Mahle MS forged pistons.
Features a 4.225 inch bore and 3.976 inch stroke.
Designed with a 6.319 inch connecting rod length and a 0.990 inch wrist pin.
Piston dish volume is -20.5cc, resulting in a 10.6:1 compression ratio.
Constructed from 2618 aluminum alloy for strength and thermal stability.

These pistons are specifically designed for Ford Godzilla 446 cu in. engines. Not CARB approved; cannot ship to California.

⚠️ 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 Ford Godzilla 446 cubic inch engines. These pistons are built to handle the demands of a high-performance engine rebuild, offering a solid foundation for increased power and durability. The specific dimensions, including a 4.225-inch bore and a 3.976-inch stroke, are crucial for achieving the correct displacement and compression ratio for your build.

Mahle has engineered these pistons with a 2618 aluminum alloy, known for its strength and resistance to thermal expansion, which is vital for high-stress applications. The -20.5cc dish volume contributes to a 10.6:1 compression ratio when paired with the appropriate cylinder heads and crankshaft, making them suitable for naturally aspirated or forced induction builds. The 6.319-inch connecting rod length and the 0.990-inch wrist pin diameter are standard specifications for many performance Ford applications, ensuring compatibility with common aftermarket and OEM components. Each piston weighs approximately 493 grams, contributing to a balanced rotating assembly.

When rebuilding your Ford Godzilla engine, choosing well-built internal components like these Mahle pistons is essential for reliability and performance. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures, especially regarding ring gap, bearing clearance, and piston-to-wall clearance.