ID
943325
$ 1.26
1-2 weeks delivery time
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The Nanni Diesel 970647606 corrugated D12 spring washer is a vibration-resistant locking fastener element used across several critical engine assemblies, including the gearbox flange, flywheel housing, starter motor, and key cooling components such as the sea water pump and heat exchanger. Designed to maintain clamp load and help prevent fasteners backing off under marine engine vibration, it fits a wide range of Nanni models including 4.190HE, 4.195HE, 4.200HE, 4.200TD, N4.60, 4.220HE, 4.390TDI Stern Drive, 5.250TDI, 5.280HE, N4.65, N4.85, N4.104, and multiple T4 series engines.
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Nanni Diesel Corrugated D12 Spring Washer 970647606
The Nanni Diesel 970647606 is a corrugated D12 spring washer used as a locking washer in multiple Nanni marine engine assemblies. Installed in locations such as the gearbox flange, flywheel housing, and starter motor, it helps maintain consistent bolt preload in high-vibration service. This washer is also specified within cooling-system components including the sea water pump, heat exchanger, and an aftercooler assembly, supporting secure, reliable fastening throughout the engine.
Compatibility
- 4.190HE engines
- 4.195HE engines
- 4.200HE engines
- 4.200TD engines
- N4.60 engines
- 4.220HE engines
- 4.390TDI Stern Drive engines
- 5.250TDI engines
- 5.280HE engines
- N4.65 engines
- N4.85 engines
- N4.104 engines
- T4.155 engines
- 4.380TDI engines
- 4.380TDI Stern Drive engines
- T4.165 engines
- T4.180 engines
- T4.200 engines
- T4.212 engines
- T4.270 engines
- T4.230 engines
- T4.205 Standard engines
Technical Specifications
Brand Nanni Diesel Part Number 970647606 Washer Type Corrugated spring washer Size D12 Application Note For DP 240 pulley; replaces split lock washers
Product Details
- Component: Corrugated spring washer (locking washer)
- Used In Assemblies: Gearbox flange, sea water pump, heat exchanger, aftercooler assembly, flywheel housing, starter motor
- Role In System: Helps resist loosening and supports stable fastening under engine vibration and cyclic loading
Features
- Supports secure clamping in high-vibration marine propulsion service
- Suitable for use across drivetrain, starting, and cooling-system assemblies
- OEM part reference for straightforward replacement and correct fit
- Helps protect joints and mounted components by maintaining consistent fastener tension
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