Denso OE Specification Diesel Injector Nozzle with 1600 bar Injection Pressure and Precision-Ground Needle for ISUZU 6HK1
The Diesel Injector Nozzle carrying OEM numbers 8-97609788-6 and 8-97609788-5 is a direct OE-specification replacement for the Denso common rail fuel system used in the ISUZU 6HK1 7.8-liter inline-6 diesel engine. It is designed for ISUZU FVR34 medium-to-heavy-duty trucks, as well as FTR, FSR, FXR, and GMC/Chevrolet T-series chassis that share the same fuel system architecture.
The 6HK1 is a 7,790 cc inline-6 common rail direct injection engine with a bore and stroke of 115 mm × 125 mm. Depending on tuning, it produces up to 240 hp at 2,400 rpm and 520 N·m (72 kg·m) of torque at 1,450 rpm. The engine operates with a common rail injection pressure of up to 1,600 bar (23,200 psi), requiring precision-machined nozzle components that maintain micron-level tolerances under severe thermal and mechanical stress.
| Part Number: | 8-97609788-5, 8-97609788-6 |
| Product Name: | Diesel Injector Nozzle |
| Car Model: | ISUZU FVR34 |
| Engine Model: | ISUZU 6HK1 |
| Condition: | 100% Brand New |
| Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe |
This ISUZU diesel injector nozzle 8-97609788-6 directly replaces the factory nozzle in the following configurations:
| Chassis / Model | Engine | Years | Notes |
|---|---|---|---|
| ISUZU FVR34 | 6HK1-TCN / 6HK1-XQA | 2006 onwards | Primary application; 7.8 L common rail, 240 hp, Euro 2 |
| ISUZU FTR / FSR / FXR | 6HK1 (LG4) | 1998-2007 | Class 6-7 chassis, export markets |
| ISUZU FVZ34 | 6HK1 | 2006 onwards | Heavy-duty, 6x4 configuration |
| GMC / Chevrolet T6500, T7500, T8500 | 6HK1 (LG4) | 2000-2006 | Rebadged ISUZU for North American market |
| Hitachi Excavators (ZX200-3, ZX240-3, ZX330) | 6HK1 | 2006 onwards | Off-road / construction equipment |
The same nozzle also fits the 4HK1 5.2 L inline-4 engine, as the injector design is identical across the 4HK1 and 6HK1 common rail family.
- Denso OE Specification - Precision micron-level tolerances with sub-micron tolerances (±2 µm)
- Up to 1,600 bar Injection Pressure Capability - Designed to withstand extreme pressures with safety margin over 50% above operating pressure
- Precision-Ground Needle - Surface finish of Ra ≤ 0.1 µm with DLC (diamond-like carbon) coating for extended service life
- Direct OE Cross-Reference Coverage - Interchangeable with multiple supersession numbers
- Ideal for 6HK1 and 4HK1 Common Rail Engines - Restores original spray angle and atomization
- IATF 16949 Certified Manufacturing - Automotive industry standard for quality management
| QC Item | Verification Method |
|---|---|
| Needle-body clearance | Air flow test - clearance within 0.002-0.005 mm |
| Opening pressure | Denso nozzle tester - verified at specified opening pressure (±5 bar) |
| Spray pattern | High-speed camera inspection - uniform spray with defined cone angle |
| Seat leakage | Pressure decay test - fuel leakage ≤ 1 cm³ per 30 seconds |
| Material hardness | Rockwell hardness test - target HRC 58-62 on needle and body |
- Individual packaging: Sealed in anti-rust VCI bag, foam-lined carton
- Carton dimensions: 5 × 5 × 8 cm per nozzle
- Net weight: 720 g; Gross weight: 920 g
- Master carton: 100 units per export carton
- Lead time: 3-7 working days for stock orders
- Minimum order quantity: 1 piece (sample order available)
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.