ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1
| Width: | 32mm | Length: | 1133mm |
| Teeth: | 119 Teeth | Tooth Profile: | Trapezoidal (Square) Tooth Profile |
| Material: | Neoprene + Fiberglass/Aramid Fiber Reinforcement | Installation Position: | Between Crankshaft Timing Gear And Camshaft Timing Gear |
| Compatible Engine: | ISUZU 4JB1, 4JB1T | OEM Part Number: | 8-94380679-0 / 8943806790 |
| High Light: | 119 Teeth Timing Belt,32mm Width Timing Belt,Trapezoidal Tooth Profile Timing Belt |
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ISUZU Timing Belt 8-94380679-0 8943806790 Compatible with NKR55 4JB1 Diesel Engine — 119 Teeth Trapezoidal Tooth Profile OEM Standard Replacement
The ISUZU Timing Belt with OEM numbers 8-94380679-0 / 8943806790 is a precision-engineered replacement designed for ISUZU 4JB1 series diesel engines, widely used in NKR55 light-duty trucks. This component is a core part of the engine's valve train — the Timing Belt — responsible for driving the camshaft in precise synchronization with the crankshaft, ensuring intake and exhaust valves open and close at the correct times.
The timing belt is a critical drive component of the engine's valve train, installed between the crankshaft timing gear and the camshaft timing gear. Its working principle includes:
- Synchronous Drive: The timing belt's tooth profile precisely meshes with the timing gears, ensuring strict synchronization between the crankshaft and camshaft (2 crankshaft rotations = 1 camshaft rotation).
- Valve Control: Driven by the timing belt, the camshaft opens and closes intake and exhaust valves at precisely timed intervals, ensuring proper air intake and exhaust.
- Accessory Drive: On some models, the timing belt also drives the injection pump (diesel) or balance shaft.
- Quiet Operation: The toothed belt design provides lower operating noise compared to chain drives, improving driving comfort.
| Symptom | Probable Cause |
|---|---|
| Hard starting or engine won't start | Broken timing belt; loss of valve-piston synchronization |
| Rough idle or poor acceleration | Timing belt jumped a tooth; valve timing off |
| Abnormal "ticking" noise from engine | Insufficient belt tension; belt slapping against cover |
| Visual inspection shows cracks, wear, or damaged teeth | Belt reached service life; rubber aging |
| Engine suddenly stalls and won't restart | Broken timing belt causing valve-piston interference; severe engine damage |
| Part Number: | 8-94380679-0 8943806790 | Product Name: | Timing Belt |
| Car Model: | NKR55 | Engine Model: | 4JB1 |
| Condition: | 100% Brand New | Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe | ||
| Package: | Neutral Packing Or Make It As Requested | ||
Primary Vehicle Applications:
| Brand | Model Series | Chassis | Compatible Engine |
|---|---|---|---|
| ISUZU | NKR55 | NKR55 | 4JB1 |
| ISUZU | NKR | NKR | 4JB1 |
| ISUZU | NHR | NHR | 4JB1 |
| ISUZU | ELF | — | 4JB1 |
- Number Confirmation: This product number is 8-94380679-0 / 8943806790. Also listed as 8-94380679-SXF, 8943806790S1, 94380679. Verify the specific number on the original part before ordering.
- Associated Components: When replacing the timing belt, it is recommended to replace the tensioner pulley and idler pulley simultaneously for overall valve train reliability.
- Timing Marks: Strictly align crankshaft and camshaft timing marks during installation. After installation, rotate the crankshaft two full turns and confirm timing marks are still aligned.
- Replacement Interval: Timing belts should be replaced every 80,000～100,000 km or 5 years (whichever comes first) — even if the belt looks intact.
- Professional Installation: The timing belt is a critical valve train component — improper installation may cause valve-piston interference and severe engine damage. Must be performed by a qualified engine repair technician.
| Packaging | Neutral packaging or customized per customer request |
| Quantity per package | 1 pc/box (standard shipment packaging) |
| Brand | BZLP |
| Place of Origin | China |
| Minimum Order Quantity | 5 pieces |
| Delivery Time | 5–8 working days |
| Warranty | 1 year |
| Target Customers | Truck parts wholesalers, light-duty truck repair shops, fleet purchasers, export traders |
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