Are these pistons ready to install right out of the box?

Yes, these Mahle OE piston sets come with the piston rings already mounted. They also include the necessary pins and clips, making them ready for installation by the engine builder.

What does the '.040' in the product name mean?

The '.040' indicates that these pistons are 0.040 inches larger in diameter than the original stock pistons. This size is typically used when an engine's cylinders have been bored out to accommodate wear or increase displacement.

Are these pistons approved for use in California?

No, these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

1991-1993 Dodge W250 Piston Set | Mahle OE

Name: Mahle OE Cummins B 5.9L L6 .040 w/ PCR Eng Set Piston With Rings Set (Set of 6)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-cummins-b-5-9l-l6-040-w-pcr-eng-set-piston-with-rings-set-set--t14-53286
Price: 740.36 USD
Availability: BackOrder

Mahle OE Cummins B 5.9L L6 .040 w/ PCR Eng Set Piston With Rings Set (Set of 6)

$740.36

On Backorder

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

Fits 1991-1993 Dodge W250. Mahle OE Cummins B 5.9L L6 .040 piston and ring set (6 pcs). Ready for installation with mounted rings.

Key Features

Fits 1991-1993 Dodge W250, 1991 Dodge D250 and D350, and 1992-1993 Dodge W350.
Mahle OE quality pistons with compensated ring grooves for proper ring loading and oil control.
Expansion-controlled design reduces engine noise, wear, and emissions.
Includes mounted piston rings, pins, and clips for easier installation.
Pistons are .040 inches larger than stock, suitable for bored engines.
Set includes six pistons and rings for a complete engine set.

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Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your 1991-1993 Dodge W250 with the Cummins B 5.9L L6 engine, a solid set of pistons is crucial. These Mahle OE piston sets are built to the same standards as the original equipment, ensuring your engine runs smoothly and reliably. They're designed to handle the demands of diesel power while keeping engine noise, emissions, and wear to a minimum.

What sets these Mahle pistons apart is their attention to detail. They feature compensated ring grooves, which help ensure the piston rings are loaded correctly and maintain proper oil control. This is key for preventing oil from getting into the combustion chamber and for maintaining good compression. Plus, the expansion-controlled design means they fit with minimal clearance, which helps reduce engine noise and wear. Mahle is one of the largest original equipment piston manufacturers globally, so you know you're getting a well-built part.

This set comes with pistons and rings already mounted, along with the necessary pins and clips. This makes the installation process much more convenient for you. Just remember, these pistons are .040 inches larger than stock, so they're intended for engines that have already been bored out to that size. They are not CARB approved and cannot be shipped to California.