What does the 'PC' designation mean on these pistons?

The 'PC' designation on these Mahle pistons indicates they come with a special coating. This coating is applied to help reduce friction between the piston and the cylinder wall, which can lead to improved wear resistance and potentially better engine efficiency.

Are these pistons a direct replacement for all Cummins 5.9L ISB engines?

These pistons are specifically 0.020 inch undersize. They are intended for use in engines where the cylinders have been machined (bored) to this exact measurement during a rebuild. Always confirm your engine's specific bore size and requirements before purchasing.

What other parts are typically needed when installing new pistons?

When installing new pistons, it's standard practice to also replace the piston rings, connecting rod bearings, and main bearings. You'll also need a new gasket set, including head gaskets, oil pan gaskets, and intake/exhaust manifold gaskets, to ensure a proper seal.

Mahle OE Cummins 5.9L ISB Piston Set 2243354020

Name: Mahle OE Cummins 5.9L ISB Diesel 6CYL .020 w/ PC Piston Set (Set of 6)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-cummins-5-9l-isb-diesel-6cyl-020-w-pc-piston-set-set-of-6-t14-53505
Price: 873.40 USD
Availability: BackOrder

Mahle OE Cummins 5.9L ISB Diesel 6CYL .020 w/ PC Piston Set (Set of 6)

$873.40

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 5.9L ISB Diesel 6CYL .020 w/ PC Piston Set (Set of 6)

Key Features

This is a set of 6 pistons for a Cummins 5.9L ISB 6-cylinder diesel engine.
The pistons are 0.020 inch undersize, intended for use in bored cylinders.
Features a PC coating for reduced friction and improved wear resistance.
Built to meet original equipment specifications for the Cummins 5.9L ISB.
Mahle OE is a well-known brand for engine components.

This piston set is specifically designed for the Cummins 5.9L ISB diesel engine. Please verify your engine's specific application and required piston size before ordering.

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Product Details

If you're rebuilding the engine in your Cummins 5.9L ISB diesel, this Mahle OE piston set is a solid choice. This set includes six pistons, each measuring 0.020 inches undersize, designed to fit your 6-cylinder engine. Mahle is a well-known name in engine components, and these pistons are built to meet the original equipment specifications for your Cummins ISB.

These pistons feature a specific design with 'PC' indicating they are coated, which helps reduce friction and wear within the cylinder bore. This coating is a notable detail that contributes to improved longevity and performance. The 0.020 inch undersize means these pistons are intended for cylinders that have been bored out to that specific measurement during an engine rebuild. Ensuring your cylinders are precisely machined to match the piston size is crucial for proper engine function and sealing. This set is designed for a direct fit, simplifying the installation process for mechanics familiar with this engine platform.

When undertaking a diesel engine rebuild, using pistons that match the original manufacturer's standards is important for reliability and performance. This Mahle OE set offers that assurance. Make sure to check all other necessary components for your rebuild, such as rings, bearings, and gaskets, to ensure a complete and successful engine overhaul.