ID
1364403
$ 45.90
1-2 weeks delivery time
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The Nanni Diesel 970312991 water return hose is a cooling-system connection used in the cylinder head assembly to route returning coolant flow back through the engine’s circulation path. Designed for dependable fit and leak-resistant performance in marine duty, it supports stable operating temperature on Nanni Diesel 4.200TD, N4.40, N4.50, N4.60, and N4.65 engines.
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Nanni Diesel Water Return Hose for the Cylinder Head Circuit
The Nanni Diesel 970312991 water return hose is a cooling hose installed in the cylinder head assembly. Its role is to carry returning coolant through the cylinder head cooling circuit, helping maintain consistent temperature control and reliable engine operation in marine environments.
Compatibility
- 4.200TD engines
- N4.40 engines
- N4.50 engines
- N4.60 engines
- N4.65 engines
Product Details
- Brand: Nanni Diesel
- Part Number: 970312991
- Component Type: Water Return Hose
- Assembly Location: Cylinder Head
- Catalog References: Cylinder head p.8 (N4.40), p.9 (N4.40 and N4.50), p.10 (N4.50)
Features
- Supports correct coolant return flow within the cylinder head cooling circuit
- Helps protect against overheating by maintaining stable circulation
- OEM replacement hose for straightforward installation and dependable fit
- Built for reliable sealing performance in marine engine compartments
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