What does the .040 sizing mean for these pistons?

The .040 sizing indicates that these pistons are 0.040 inches larger in diameter than the standard factory size. This is used when the engine cylinders have been bored out to clean up imperfections or to increase displacement. You'll need to measure your cylinder bores to confirm this is the correct size for your rebuild.

Are the piston rings included with this set?

Yes, Mahle OE pistons are offered ready for installation with mounted piston rings. The pins and clips are also included in this set for your convenience during the engine build.

What is the benefit of expansion-controlled designs?

Expansion-controlled designs help the pistons maintain small, precise clearances within the cylinder bore as the engine heats up. This can lead to reduced engine noise, less wear over time, and improved oil control.

Mahle OE Piston Set .040 2241842040 - Ford Truck 300

Name: Mahle OE Ford Trk 300 Eng 1969-92 .040 Piston Set (Set of 6)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-ford-trk-300-eng-1969-92-040-piston-set-set-of-6-t14-53659
Price: 129.77 USD
Availability: BackOrder

Mahle OE Ford Trk 300 Eng 1969-92 .040 Piston Set (Set of 6)

$129.77

On Backorder

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

Mahle OE Ford Truck 300 .040 Piston Set (Set of 6). Fits 1969-1992 Ford 300ci engines.

Key Features

Fits 1969-1992 Ford 300ci (4.9L) inline-6 engines.
Pistons are .040 inches oversize.
OE quality construction ensures proper fit and function.
Compensated ring grooves help with oil control and ring loading.
Expansion-controlled design reduces engine noise and wear.
Includes pistons, pins, and clips for easier installation.

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Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your 1969-1992 Ford truck or van with the 300 cubic inch inline-six, a quality piston set is key to getting it running right. These Mahle OE pistons are made to the same standards as the original equipment, ensuring a solid foundation for your engine build. They are designed to fit your specific engine application, helping to restore performance and reliability.

Mahle builds these pistons with compensated ring grooves, which helps them control oil and maintain proper ring loading. They also feature expansion-controlled designs. This means they're built with small fitting clearances, which can help reduce engine noise and wear, while also improving oil control and emissions. This set comes with the pistons, pins, and clips all ready for installation, saving you a step during your rebuild.

This set is specifically sized at .040 inches oversize. Always double-check your cylinder bore measurements to ensure this is the correct size for your engine rebuild.