This rocker arm shaft assembly is designed as an OEM-equivalent replacement for ISUZU NPR NPR-HD NQR 4HK1 5.2L 2005-2010. The rocker shaft supports rocker arm movement for proper valve operation. Use to replace worn or damaged valvetrain shaft components during top-end service. Compare the title fitment and original part details before ordering.
- COMPATIBILITY: Fits ISUZU NPR NPR-HD NQR 4HK1 5.2L 2005-2010.
- VALVETRAIN SUPPORT: The rocker shaft supports rocker arm movement for proper valve operation.
- REPLACEMENT USE: Use to replace worn or damaged valvetrain shaft components during top-end service.
- FITMENT CHECK: Confirm model, year, engine, side or position, dimensions, and original part details before purchase.
- DIRECT REPLACEMENT FIT: Designed for replacement in the factory location when matched by fitment and reference number. No modifications required when the application is matched correctly.
- OEM: 8973899210 8973064262
Specifications
| SKU / Part Number | 7389921 |
|---|---|
| Brand | CHM |
| OEM | 8973899210, 8973064262, 8973064261
|
| Weight | 13.5 lb |
| Dimensions (L × W × H) | 23 in × 6 in × 3 in |
| Category | Engine Parts |
Compatibility
| Make | Model | Years | Engine | Liters | Fuel |
|---|---|---|---|---|---|
| Isuzu | NPR | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NPR-HD | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NQR | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W3500 Tiltmaster | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W4500 Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W5500 Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W3500 Forward | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| GMC | W4500 Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W5500 Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |










