ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1
Price:
Negotiable
MOQ:
20 PCS
Delivery Time:
5-8 Work Days
Brand:
YIMI
Product Description
ISUZU Timing Belt 8-94380679-0 8943806790 for NKR55 4JB1 — 119 Teeth 32mm Width OEM Standard
ISUZU Timing Belt 8-94380679-0 8943806790 Compatible with NKR55 4JB1 Diesel Engine — 119 Teeth Trapezoidal Tooth Profile OEM Standard Replacement
Product Overview
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.
Numbering Note: This product number is 8-94380679-0 / 8943806790, also listed as 8-94380679-SXF. Same series includes 8-94380679-0S1, 8-94419856-0 and other numbers. Please verify the specific number based on actual vehicle configuration.
Working Principle
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.
Failure Symptoms
Inspect immediately if any of these occur:
| 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 |
Technical Specifiions
Tooth Count:
119 teeth
Width:
32mm
Tooth Profile:
Trapezoidal (Square) Tooth Profile
Length:
1133mm
Material Standard:
Neoprene + Fiberglass/Aramid fiber reinforcement
OE Cross-Reference:
8-94380679-0 / 8943806790
Brand Certifiion:
BZLP, ISO/TS16949 certified
Condition:
Brand New
Warranty:
1 year
Product Details
| 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 | ||
Vehicle & Engine Compatibility
Primary Vehicle Appliions:
| Brand | Model Series | Chassis | Compatible Engine |
|---|---|---|---|
| ISUZU | NKR55 | NKR55 | 4JB1 |
| ISUZU | NKR | NKR | 4JB1 |
| ISUZU | NHR | NHR | 4JB1 |
| ISUZU | ELF | — | 4JB1 |
Important Fitment Warnings:
- 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.
Features & Benefits
119-Tooth Precision Design
Ensures precise crankshaft-camshaft synchronization for accurate valve timing — verified to match 4JB1 engine original specifiions.
32mm Width + 1133mm Length
Provides ample load capacity and precise length match — ensures stable, slip-free transmission across the full engine RPM range.
Trapezoidal (Square) Tooth Profile
Perfect mesh with 4JB1 engine timing gears — 4JB1 engines use square-tooth timing belts, ensuring precise and reliable drive.
High-Quality Neoprene + Fiber Reinforcement
Excellent oil resistance, heat resistance, and tensile strength for long-term reliable operation under high-temperature, high-speed conditions — prevents belt stretch and breakage.
ISO/TS16949 Quality Management Certified
Internationally recognized automotive industry quality standard ensuring full-process quality control — supplied by BZLP brand.
1-Year Warranty
Reliable after-sales protection — 1-year quality guarantee.
Packaging & Supply
| 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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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Yimi (Guangzhou) Automotive Parts Co, Ltd
Location
Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
Contact Person
James