ID
1362918
$ 5,368.10
1-2 weeks delivery time
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The Nanni Diesel 970312122 piston ring set is a matched sealing element for the crankshaft and piston assembly, helping maintain strong compression and controlled oil film on the cylinder walls. Designed for Nanni T4.155 and 4.380TDI marine engines, it also fits the stern drive versions of these engine models for consistent performance under marine operating loads.
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Nanni Diesel Piston Ring Set for Crankshaft and Piston System
The Nanni Diesel 970312122 is a piston ring set used within the crankshaft and piston assembly. By sealing the piston to the cylinder bore, the ring pack supports efficient combustion, stabilizes compression, and helps control oil consumption—key factors for dependable marine diesel operation.
Compatibility
- T4.155 engines
- 4.380TDI engines
- T4.155 Stern Drive engines
- 4.380TDI Stern Drive engines
Product Details
- Brand: Nanni Diesel
- Part Number: 970312122
- Component Type: Piston Ring Set
- Assembly Location: Crankshaft and Piston
Features
- Matched ring set to restore proper piston-to-bore sealing
- Helps maintain compression for stable power output
- Supports oil control for cleaner, more efficient running
- OEM replacement fit for T4.155 and 4.380TDI engine families, including stern drive variants
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