Description
Genuine Bosch fuel injector for 1992-2002 GM 6.5L turbo-diesel light-truck and SUV applications, replacing GM 10233973 and Delphi/CAV 6703803. The Bosch 0432217276 uses an NA56X nozzle and OSD304 tip with a 142-bar opening pressure, calibrated for the GM 6.5L L65/L56/L57/L65 indirect-injection turbo platform across Chevrolet, GMC, AM General Hummer, and Hummer H1.
Signs You Need a New Fuel Injector
- Hard starting, extended cranking, or no-start when warm
- Rough idle, misfire on one cylinder, or noticeable cylinder drop
- White or black smoke under load
- Loss of power or fuel-economy drop
- Diesel knock louder than usual on a single cylinder
- Fuel weeping at the injector return line or hold-down
Specifications
| Manufacturer | Bosch |
|---|---|
| Part Number | 0432217276 |
| Part Type | Mechanical Fuel Injector (1 unit) |
| Engine Compatibility | GM 6.5L Turbo Diesel (L65/L56/L57) |
| Nozzle | NA56X |
| Tip | OSD304 |
| Opening Pressure | 142 bar (≈2060 psi) |
| Body | Short body, fine thread, turbo |
Cross References
This injector replaces or is equivalent to the following part numbers:
- GM: 10233973
- Delphi / CAV: 6703803
- Bosch: 0432217276
- Also known as: NA56X
For 1991-1993 naturally-aspirated 6.2L / 6.5L applications, use Bosch 0432217275 instead — different opening pressure and not interchangeable.
Applications
This injector fits 6.5L Turbo Diesel engines (L65/L56/L57) in:
- Chevrolet C/K 1500, 2500, 3500 pickup (1994-2000)
- Chevrolet C/K 1500, 2500 Suburban (1994-1999)
- Chevrolet Tahoe (1995-1999)
- Chevrolet Express 2500, 3500 (1996-2002)
- Chevrolet P30 (1994-1999)
- GMC C/K 1500, 2500, 3500 Sierra (1992-2000)
- GMC C/K 1500, 2500 Suburban (1994-1999)
- GMC Yukon (1994-1997)
- GMC Savana 2500, 3500 (1996-2002)
- GMC P3500 (1997-1999)
- AM General Hummer (1994, 1996-2001)
- Hummer H1 (2002-2004)
Verify your engine RPO code (L65 / L56 / L57) is a turbo 6.5L before ordering — naturally-aspirated 6.5L uses a different injector. Sold as a single unit; order quantity 8 for a complete engine set.
