Mahle

Mahle Motorsport Cummins 5.9L 12V Piston Set 4.015 in. Bore 16.3:1

SKU: mhl197952215 UPC: 197952215
In stock
Backordered From Supplier – Call for Availability

⚠ Call for Availability

This item may be on backorder. Please contact us to confirm supplier availability and estimated lead time before ordering.

Call: (503) 662-9752 | Email Us: info@dfispdx.com

$908.71

Have a question about this part? We'll answer it.

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.

These Mahle Motorsport cast performance pistons drop the 5.9L Cummins 12V to 16.3:1 compression at a 4.015 in. bore, which is where most builders want to be before adding boost.

Key Features

  • M174+ cast performance piston with a coated skirt
  • Bore: 4.015 in. | Stroke: 4.724 in. | Rod: 7.559 in
  • Crown volume -47.6cc for a 16.3:1 compression ratio
  • Early 12V and marine-style bowl with a short pin design
  • S42170 ring set included
  • Listed weight: 1151 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: 197952215
  • 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: -47.6cc
  • Compression ratio: 16.3:1
  • Alloy: M174+
  • Weight: 1151 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: 9.7

Shipping Length: 13.7

Shipping Width: 11.8

Rebuilt by Techs Who Only Do Diesel

Injectors, pumps, and turbos, serviced by people who've been doing this for decades — not a parts counter with a catalog.

Get A Quote