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ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1
ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1
ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1
ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1
Specifications
Model Number :
NKR55 4JB1
Length :
1133mm
Price :
Negotiable
Installation Position :
Between crankshaft timing gear and camshaft timing gear
Certifiion :
ISO/TS16949
Teeth :
119 teeth
MOQ :
20 PCS
Delivery Time :
5-8 Work Days
Material :
Neoprene + Fiberglass/Aramid fiber reinforcement
Payment Terms :
T/T
Compatible Engine :
ISUZU 4JB1, 4JB1T
Place of Origin :
CHINA
Tooth Profile :
Trapezoidal (Square) Tooth Profile
Supply Ability :
10000 pcs/month
OEM Part Number :
8-94380679-0 / 8943806790
Packaging Details :
Neutral Package or as customers’ request
Brand Name :
YIMI
Width :
32mm
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
ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1
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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ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1

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Product Detail
Model Number :
NKR55 4JB1
Length :
1133mm
Price :
Negotiable
Installation Position :
Between crankshaft timing gear and camshaft timing gear
Certifiion :
ISO/TS16949
Teeth :
119 teeth
Contact Supplier
ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1
ISUZU Timing Belt 8-94380679-0 8943806790 with 119 Teeth 32mm Width and Trapezoidal Tooth Profile for NKR55 4JB1

Yimi (Guangzhou) Automotive Parts Co, Ltd

Verified Supplier
3 Years
guangzhou
Since 2005
Business Type :
Manufacturer, Distributor/Wholesaler, Exporter, Trading Company, Seller
Main Products :
Isuzu Cars Parts, Isuzu Engine Parts, Isuzu Chassis Parts
Total Annual :
8000000-10000000
Employee Number :
100~150
Certification Level :
Verified Supplier
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