Mahle Motorsport Cummins 5.9L 12V Piston Set 4.015 in. Bore 13.9:1 Valve Pockets
⚠ Call for Availability
This item may be on backorder. Please contact us to confirm supplier availability and estimated lead time before ordering.
Regular price
$1,081.36
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
Got Questions? Feel free to email us or call us at (503) 235-1947
Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for
competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase.
Orders shipping to restricted areas may be canceled.
A six-piston set from Mahle Motorsport for the 5.9L Cummins 12V, sized at 4.015 in. with a -59.9cc crown volume that puts compression at 13.9:1.
Key Features
- M174+ cast performance piston with a coated skirt
- Bore: 4.015 in. | Stroke: 4.724 in. | Rod: 7.559 in
- Crown volume -59.9cc for a 13.9:1 compression ratio
- Early 12V and marine-style bowl with a short pin design
- 0.150 in. deep valve pockets for added valve clearance
- S42170 ring set included
- Listed weight: 1117 grams each
- Sold as a set of six pistons
Fitment
- Cummins 5.9L B-Series 12V diesel
- 4.015 in. bore
- Uses the 4.015 in. S42170 ring set (included)
Product Details
- Manufacturer Part Number: 197952115
- Brand: Mahle Motorsport
- Bore: 4.015 in
- Stroke: 4.724 in
- Rod length: 7.559 in
- Compression height: 2.817 in
- Pin diameter: 1.575 in
- Crown volume: -59.9cc
- Compression ratio: 13.9:1
- Valve pockets: 0.150 in. deep
- Alloy: M174+
- Weight: 1117 grams
- Ring set: S42170 included
- Quantity: Set of 6
- Compression ratio calculated with 0.019 in. piston protrusion above deck and a 0.060 x 4.150 in. head gasket
Shipping Height: 9.5
Shipping Length: 13.5
Shipping Width: 11.6