Description
🚙 Throttle Body Coolant Hose for Nissan Patrol (1992–1997)
Part Number: DMH3118 / CH3118
The throttle body coolant hose is a vital component in the cooling system of the Nissan Patrol 4-door wagon, produced between 1992 and 1997, equipped with the 4.2-litre 12-valve inline-six engine. This hose ensures that coolant flows properly through the throttle body, preventing icing, regulating temperature, and maintaining smooth engine performance. The DMH3118/CH3118 hose is designed as a direct-fit replacement, matching the original factory specifications for durability and reliability.
🔧 Key Features
- OEM fitment: Specifically engineered for the Nissan Patrol Y60 series with the 4.2L 12V petrol engine.
- Durable construction: Made from reinforced rubber compounds resistant to heat, pressure, and coolant chemicals.
- Temperature regulation: Maintains optimal throttle body temperature, preventing condensation or icing in colder climates.
- Easy installation: Pre-molded shape ensures correct routing and secure fit without modification.
- Cost-effective replacement: Provides OEM-level performance at a more affordable price.
⚙️ Role in the Cooling System
The throttle body coolant hose connects the engine’s cooling circuit to the throttle body. By circulating coolant through this part, the system stabilizes the throttle body’s operating temperature. This is especially important in the Nissan Patrol’s large-capacity 4.2L engine, which is often used in demanding off-road and towing conditions. A stable throttle body temperature ensures consistent air-fuel mixture delivery, smoother idling, and improved fuel efficiency.
🛠️ Maintenance Notes
- Inspect hoses regularly for cracks, bulges, or leaks.
- Replace if signs of coolant seepage appear near clamps or bends.
- When replacing, consider refreshing coolant and clamps for maximum reliability.
- Preventative replacement recommends every 5–7 years, especially in harsh climates.
📊 Comparison Table
| Feature | DMH3118/CH3118 Hose | Generic Hose |
|---|---|---|
| Fitment accuracy | Exact match for Nissan Patrol Y60 | May require trimming/adaptation |
| Durability | Reinforced rubber, heat-resistant | Varies by brand |
| Ease of installation | Pre-molded shape | Straight hose, harder to fit |
| Performance impact | Maintains throttle body efficiency | Risk of poor circulation |
✅ Conclusion
The DMH3118/CH3118 throttle body coolant hose is an essential replacement part for Nissan Patrol models build between 1992 and 1997 with the 4.2L 12V engine. By ensuring proper coolant circulation through the throttle body, it protects against icing, stabilizes engine performance, and extends the life of the cooling system. For owners who rely on their Patrol for rugged off-road adventures or heavy-duty use, this hose offers peace of mind with OEM-level fitment and durability.
Reviews
There are no reviews yet.