What is included in this piston set?

This Mahle OE piston set includes six pistons, the necessary piston rings, wrist pins, and retaining clips. Everything needed to install the pistons is provided.

What does '.020' mean for these pistons?

The '.020' indicates that these pistons are 0.020 inches larger in diameter than the standard factory bore size. This size is used when the engine cylinders have been bored out to this measurement to correct wear or damage.

Are these pistons suitable for all 250ci engines?

These pistons are specifically designed for the 250 cubic inch inline-six engines found in many GMC and Chevrolet vehicles produced between 1966 and 1984. Always verify fitment for your specific vehicle model and year.

Mahle OE Piston Set .020 Over 2241658020

Name: Mahle OE GMC Pass & Trk 250 Eng 1966-84 .020 Piston Set (Set of 6)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-gmc-pass-trk-250-eng-1966-84-020-piston-set-set-of-6-t14-53569
Price: 153.24 USD
Availability: BackOrder

Mahle OE GMC Pass & Trk 250 Eng 1966-84 .020 Piston Set (Set of 6)

$153.24

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 GMC Pass & Trk 250 Eng 1966-84 .020 Piston Set (Set of 6). Ready to install with rings, pins, and clips included.

Key Features

This set includes six pistons, piston rings, pins, and clips, ready for installation.
Pistons are .020 inches over the standard bore size.
Designed for GMC and Chevrolet passenger cars and trucks with the 250ci inline-six engine.
Fits a wide range of vehicles from 1966 to 1984.
Features compensated ring grooves for proper ring loading and oil control.
Expansion-controlled design reduces engine noise and wear.

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Will this fit your vehicle?

Product Details

This Mahle OE piston set includes six pistons, each .020 inches over standard bore size, along with their corresponding piston rings, pins, and clips. They are designed to fit a wide range of GMC and Chevrolet passenger cars and trucks equipped with the 250 cubic inch inline-six engine from 1966 through 1984. These pistons are built to original equipment specifications, ensuring they perform just like the parts that came from the factory.

Mahle has engineered these pistons with compensated ring grooves. This means they are designed to ensure the piston rings load correctly and maintain proper oil control, which is crucial for engine longevity and performance. The pistons also feature an expansion-controlled design. This allows for tighter fitting clearances within the cylinder bore, which helps reduce engine noise, minimize wear, and improve overall oil control and emissions. Having the rings, pins, and clips included means this set is ready for installation right out of the box, saving you time and effort during your engine rebuild.

This set is a solid option for anyone rebuilding a classic GM inline-six engine. Given the .020 inch overbore size, these pistons are intended for engines where the cylinders have already been bored out to accommodate this larger size, typically to correct wear or damage in the original bore.