This MAHLE piston ring set (part number 503 98 N0) replaces the compression and oil-control rings that seal the combustion chamber, control oil film on the cylinder wall, and transfer heat from the piston to the bore. It fits Porsche 911/930 applications listed in the fitment table below. MAHLE, founded in Stuttgart in 1920, pioneered light-alloy and ring-carrier piston technology and supplies pistons, rings, bearings, gaskets, and filtration to OE engine programs worldwide.
Technical Details
- Manufacturer part number: 503 98 N0
- Part type: Piston Ring Set
- Vehicle system: engine cylinder assembly
Fitment & Compatibility
Use the fitment table below to confirm year, make, model, submodel, and any application notes before ordering.
PMB Performance has more than 20 years of hands-on Porsche experience and can confirm this part against your exact car. Send your VIN if anything in the fitment table needs checking.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1991 | Porsche | 911 | Turbo | |
| 1992 | Porsche | 911 | Turbo | |
| 1986 | Porsche | 911 | Turbo Carrera | |
| 1987 | Porsche | 911 | Turbo Carrera | |
| 1988 | Porsche | 911 | Turbo Carrera | |
| 1989 | Porsche | 911 | Turbo Carrera | |
| 1978 | Porsche | 930 | ||
| 1979 | Porsche | 930 |