VALVE ROCKER EXHAUST 8973064240 Suitable for NPR models fitted with 4HK1 6HK1 engines
- Product Item : 8973064240
- Category： Isuzu Genuine Parts
- Compatibility:4HK1 6HK1
- Part name:VALVE ROCKER EXHAUST
- Packing type: Isuzu original packing
- Delivery time: 5-8 working days
| CATEGORY | SPECIFICATION |
| Part name | VALVE ROCKER EXHAUST |
| Part number | 8973064240 |
| Brand | Isuzu Select Parts |
| Model | NPR |
| Engine model | 4HK1 6HK1 |
| Packing quantity | 1 pcs |
| Material | Steel |
| Weight | 0.24kg |
| size | 14.2 × 13.2 × 4.6 cm |
| Package | Original ISP packing |
| Delivery time | 5-8 working days |
| Payment Terms | T/T, Western Union, Paypal |
Design Philosophy
Precision-engineered exhaust rocker arm designed for Isuzu 4HK1/6HK1/6HH1 engines. Made from durable steel, it serves as a double-arm lever with the rocker shaft as its fulcrum. The short arm features a threaded hole for the valve lash adjusting screw, while the long arm has a curved working face that pushes the exhaust valve.
How It Works
Mounted on the rocker shaft and driven by the camshaft. When the cam lobe pushes the rocker arm, the arm pivots on the shaft, and its long curved face presses down on the exhaust valve stem to open the valve. When the cam releases, the valve spring pushes the valve closed, and the rocker arm returns to its resting position.
Problems It Solves
Fixes valve timing errors, engine ticking noise, power loss, and increased fuel consumption caused by a worn or bent exhaust rocker arm. Restores precise exhaust valve actuation and ensures reliable engine performance in NPR75 / NQR71 / NQR75 / 700P / ELF / FVR34 / FSR33 / FTR33 trucks.
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