What does '.020 undersize' mean for these pistons?

'.020 undersize' means these pistons are 0.020 inches smaller in diameter than the standard factory size. They are intended for use in an engine block that has been bored out by 0.020 inches, typically done to clean up cylinder walls or restore compression after wear.

Do these pistons come with rings?

Yes, the manufacturer's description states that Mahle offers pistons ready for installation with mounted piston rings, along with the pin and clips included.

Are these pistons suitable for all 390 or 360 engines?

This specific piston set is designed for Ford 390 engines from 1966-1970 and 360 engines from 1968-1976. It's important to verify the engine size and production years for your vehicle to ensure proper fitment.

Mahle OE Piston Set .020 Undersize 2241713020

Name: Mahle OE Ford Pass & Trk 390 Eng 1966-70 360 Eng 1968-76 .020 Piston Set (Set of 8)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-ford-pass-trk-390-eng-1966-70-360-eng-1968-76-020-piston-set-s-t14-53179
Price: 196.92 USD
Availability: BackOrder

Mahle OE Ford Pass & Trk 390 Eng 1966-70 360 Eng 1968-76 .020 Piston Set (Set of 8)

$196.92

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 piston set for Ford 390 (1966-70) and 360 (1968-76) engines. .020 undersize. Set of 8.

Key Features

Fits 1966-1970 Ford 390 engines and 1968-1976 Ford 360 engines.
This is a .020 inch undersize piston set, designed for engines bored to that specification.
Set includes 8 pistons, ready for installation with pin and clips mounted.
Features compensated ring grooves for proper ring loading and oil control.
Expansion-controlled designs reduce engine noise, wear, and emissions.
OE quality construction from Mahle, a leading original equipment piston manufacturer.

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Will this fit your vehicle?

Product Details

Mahle is one of the largest OE piston manufacturers globally, known for making parts that meet original equipment specifications. This piston set is built to those same standards for your Ford truck or passenger car with a 390 engine from 1966-1970 or a 360 engine from 1968-1976. These are a .020 inch undersize set, meaning they are designed to fit engines that have been bored out by 0.020 inches to clean up cylinder walls or restore compression.

This set includes eight pistons, each featuring compensated ring grooves to ensure proper ring loading and effective oil control. Mahle also incorporates expansion-controlled designs, which allow for tighter fitting clearances. This helps reduce engine noise, wear, and emissions while further improving oil management. The pistons come ready for installation with the piston pin and clips already mounted, offering convenience for your engine build.

This set fits a range of Ford trucks including the F-100, F-150, F-250, and F-350 models from the late 60s through the mid-70s. Ensure you check the full fitment list to confirm compatibility with your specific vehicle.