What is the compression ratio achieved with these pistons?

These Mahle MS pistons feature -6.5cc valve reliefs that contribute to a 10.0:1 compression ratio when used with appropriate cylinder heads and gaskets. This is a common target for street performance applications.

What material are these pistons made from?

The pistons are forged from 2618 aluminum. This material is selected for its robust strength and ability to withstand the high temperatures and pressures found in performance engine builds.

Are these pistons compatible with all Ford 348 engines?

These pistons are specifically designed for Ford 348 cubic inch engines with a 4.035 inch bore. It's important to verify your engine's specific dimensions and intended use to ensure compatibility.

Mahle MS Piston Set Ford 348ci 4.035 Bore 930245735

Name: Mahle MS Piston Set Ford 348CI 4.035 Bore 3.400stk 5.400Rod .927 Pin -6.5cc 10.0 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-ford-348ci-4-035-bore-3-400stk-5-400rod-927-pin-6-5cc--t14-208145
Price: 833.52 USD
Availability: BackOrder

Mahle MS Piston Set Ford 348CI 4.035 Bore 3.400stk 5.400Rod .927 Pin -6.5cc 10.0 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 348ci engines. Features a 4.035" bore and 10.0 CR for improved performance.

Key Features

Set of 8 Mahle MS pistons for Ford 348 cubic inch engines.
Forged from 2618 aluminum for strength and heat resistance.
4.035 inch bore size matches stock dimensions.
Designed for a 3.400 inch stroke and 5.400 inch rod length.
Features a 0.927 inch pin diameter.
-6.5cc valve reliefs contribute to a 10.0:1 compression ratio.

These pistons are designed for Ford 348 cubic inch engines. They are not CARB approved and cannot be shipped 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

These Mahle MS pistons are forged from 2618 aluminum, a strong material chosen for its ability to handle high temperatures and pressures common in performance builds. They're designed for Ford 348 cubic inch engines, with a 4.035 inch bore and a 3.400 inch stroke, matching the stock dimensions. The 5.400 inch rod length and 0.927 inch pin diameter are also specified to work with your existing or upgraded connecting rods.

With a -6.5cc valve relief volume, these pistons help achieve a 10.0:1 compression ratio when paired with the right cylinder heads and gasket combination. This compression level is a popular choice for street performance builds, offering a noticeable increase in power and throttle response without being overly sensitive to fuel octane. Each piston weighs in at 414 grams, which is a well-balanced weight for this application, contributing to smooth engine operation.

This set includes eight pistons, all the hardware needed for installation, and is ready to be fitted into your Ford 348ci engine. Please 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.