This rubber cylinder head plug is designed as an OEM-equivalent replacement for ISUZU NRR NPR NQR NPR-HD 4HK1 5.2L 4HE1 4.8L 1994-2026. This gasket helps seal the valve cover and cylinder head openings against oil leaks. Ideal for replacing aged or leaking rubber sealing parts during top-end engine service. Match the listed OEM numbers and title fitment against your original part before purchase
- COMPATIBILITY: Fits ISUZU NRR NPR NQR NPR-HD 4HK1 5.2L 4HE1 4.8L 1994-2026.
- OEM-EQUIVALENT REPLACEMENT: Cross-references the OEM number listed below; verify it against your original part before ordering.
- VALVE COVER SEALING: Helps seal the valve cover area and cylinder head openings to reduce oil leaks.
- OIL LEAK REPAIR: Use when replacing hardened, cracked, swollen, or leaking valve cover gaskets and plugs.
- DIRECT REPLACEMENT FIT: Designed for replacement in the factory location when matched by fitment and OEM number. No modifications required when the application is matched correctly.
- OEM: 8978487570 / 8981638130 / 8943996050
Specifications
| SKU / Part Number | 4399605 |
|---|---|
| Brand | CHM |
| OEM | 8978487570, 8981638130, 8943996050
|
| Weight | 0.06 lb |
| Dimensions (L × W × H) | 2 in × 1 in × 1 in |
| Category | Engine Parts Gaskets, Seals & O-Rings |
Compatibility
| Make | Model | Years | Engine | Liters | Fuel |
|---|---|---|---|---|---|
| Isuzu | NPR | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Isuzu | NPR | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NPR-HD | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Isuzu | NPR-HD | 2005–2026 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NQR | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Isuzu | NQR | 2005–2026 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NRR | 2005–2026 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W3500 Tiltmaster | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Chevrolet | W3500 Tiltmaster | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W4500 Tiltmaster | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Chevrolet | W4500 Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W5500 Tiltmaster | 1999–2004 | 4HE1-TC | 4.8 | Diesel |
| Chevrolet | W5500 Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W5500HD Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W3500 Forward | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| GMC | W3500 Forward | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| GMC | W4500 Forward | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| GMC | W4500 Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W5500 Forward | 1999–2004 | 4HE1-TC | 4.8 | Diesel |
| GMC | W5500 Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W5500HD Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |