What is the compression ratio for these Mahle pistons?

These Mahle MS pistons feature a compression ratio of 15.3:1. This is a key specification for determining how efficiently your engine compresses the air-fuel mixture.

Are these pistons suitable for all Cummins 5.9L engines?

This specific piston set is designed for the Cummins 5.9L 12V (359 cu in.) B-Series diesel engine. It's important to verify your engine's specific configuration before purchasing.

What does the '-52.0cc' specification refer to?

The '-52.0cc' refers to the piston dish volume. This is the recessed area on the top of the piston, which plays a role in combustion chamber volume and compression ratio.

Mahle MS Piston Set Cummins 5.9L 12V 197952415

Name: Mahle MS Piston Set Cummins 4.015in Bore 4.724in Stroke 7.559od 1.575 Pin -52.0cc 15.3 CR Set of 6
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-cummins-4-015in-bore-4-724in-stroke-7-559od-1-575-pin--t14-549471
Price: 917.34 USD
Availability: BackOrder

Mahle MS Piston Set Cummins 4.015in Bore 4.724in Stroke 7.559od 1.575 Pin -52.0cc 15.3 CR Set of 6

$917.34

On Backorder

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

Mahle MS Piston Set for Cummins 5.9L 12V. Features a 4.015in bore and 15.3 CR for improved engine performance.

Key Features

Fits Cummins 5.9L 12V 359 cu in. diesel engines.
Set includes six cast performance pistons.
Features a 4.015 inch bore size.
Compression ratio is 15.3:1.
Piston dish volume is -52.0cc.
Pin diameter measures 1.575 inches.

This piston set is designed for the Cummins 5.9L 12V 359 cu in. diesel engine. It is not CARB approved and cannot be shipped to California.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Mahle is well-known for its extensive range of engine components, particularly pistons, that are trusted by mechanics and engine builders alike. This Mahle MS Piston Set is specifically designed for the Cummins 5.9L 12V diesel engine, also known as the 359 cu in B-Series. If you're rebuilding the top end of your Cummins, these pistons are a solid option to consider for restoring or enhancing your engine's performance.

This set includes six cast performance pistons, each with a 4.015-inch bore and a compression ratio of 15.3:1. The stroke is 4.724 inches, with a rod length of 7.559 inches and a pin diameter of 1.575 inches. Each piston weighs approximately 1139 grams and features a -52.0cc dish volume. These specifications are crucial for achieving optimal combustion and power output in your diesel engine. The cast construction offers a good balance of strength and weight for many performance applications.

When undertaking a diesel engine rebuild, using well-made components like these Mahle pistons is essential for longevity and reliability. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures to ensure the best results for your engine build.