What does the '.040' in the piston set name mean?

The '.040' indicates that these pistons are .040 inches undersize. This means they are intended for use in engine cylinders that have been bored out to this specific measurement during an engine rebuild. This ensures a precise fit within the cylinder walls.

What is included in this piston set?

This Mahle OE piston set includes six pistons. These are designed to be used as a complete set for a six-cylinder Cummins B 5.9L engine rebuild.

Can these pistons be shipped to California?

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

Mahle OE Cummins B 5.9L Piston Set 2243523040

Name: Mahle OE Cummins B 5.9L L6 .040 w/ PC Eng Set Piston Set (Set of 6)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-cummins-b-5-9l-l6-040-w-pc-eng-set-piston-set-set-of-6-t14-53565
Price: 581.91 USD
Availability: BackOrder

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

$581.91

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 Cummins B 5.9L L6 .040 w/ PC Eng Set Piston Set (Set of 6). Direct fit for diesel engines.

Key Features

Fits Cummins B 5.9L L6 diesel engines.
Set includes six pistons, all machined to a .040 inch undersize.
Designed to meet original equipment specifications for reliable performance.
Suitable for engine rebuilds where cylinders have been bored to match the .040 inch undersize.

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Product Details

When you're rebuilding the heart of your Cummins B 5.9L diesel, starting with a solid set of pistons is key. This set from Mahle OE includes six pistons, all machined to a .040 inch undersize. Mahle is a well-known name in engine components, and these pistons are made to meet the original equipment specifications for your engine.

These pistons are designed for the Cummins B 5.9L L6 engine. The .040 inch undersize means they are intended to be used in cylinders that have been bored out to match this specific measurement during an engine rebuild. This ensures a proper fit and seal within the cylinder walls, which is critical for compression and oil control. The set comes with all six pistons needed for a complete engine overhaul.

Because these are designed as OE replacements, they aim to provide the same performance and reliability as the original parts. If you're undertaking a diesel engine rebuild, using pistons that match the factory specifications is a smart way to ensure your engine runs as it should. Please note that these pistons are not CARB approved and cannot be shipped to California.