Power Steering Idler Pulley Metal (Steel) OEM Direct-Fit Replacement for ISUZU NHR NKR 100P 4JB1 with 12 Months Warranty
Basic Properties
Place of Origin:
CHINA
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
NHR NKR 100P 4JB1
Trading Properties
Minimum Order Quantity:
20 PCS
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| Material: | Metal (Steel) | Net Weight: | 0.6 Kg |
| Package Volume: | 0.0007 M³ | Engine Compatibility: | 4JB1 / 4JB1T / 4JH1 / 4JG2 |
| Installation Position: | Power Steering Pump Drive Belt System | OEM Part Number: | 8-94128866-0 / 8941288660 |
| Cross-Reference: | END1-19635-AA / 8103120A5 | Vehicle Models: | ISUZU NHR / NKR / 100P / NKR55 / NLR / NMR / NPR / NQR / QKR |
| High Light: | Metal (Steel) Power Steering Idler Pulley,OEM Direct-Fit Idler Pulley,12 Months Warranty Steering Pulley |
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Product Description
Power Steering Idler Pulley 8-94128866-0 8941288660 for ISUZU NHR NKR 100P 4JB1 Diesel Engine
Power Steering Idler Pulley 8-94128866-0 8941288660 for ISUZU NHR NKR 100P NKR55 4JB1 4JH1 4JG2 Diesel Engine — OEM Equivalent Direct-Fit Replacement with 1-Year Warranty
The Power Steering Idler Pulley with OEM numbers 8-94128866-0 / 8941288660 is a verified direct-fit replacement for ISUZU NHR, NKR, 100P, NKR55 and related models equipped with the 4JB1 / 4JH1 / 4JG2 diesel engine. This idler pulley is a critical component of the power steering belt drive system, responsible for maintaining correct tension and alignment of the power steering pump drive belt, ensuring stable hydraulic assist output across all engine speeds.
Verifiable Specifications
- Weight Specification: Net weight 0.6 kg, package volume 0.0007 m³ — based on product measurement data
- OEM Cross-Reference Verified: Replaces ISUZU OEM numbers 8-94128866-0 / 8941288660; JMC cross-reference numbers END1-19635-AA, 8103120A5
- Fitment Verified: Direct fit for ISUZU NKR, NHR (94-), NKR (93-), NLR/NMR (08-), NPR/NQR (94-02)(04-), QKR (11-), ELF100 Mexico (16-), and JMC 1040/1050/1060/1031/1041/1051/1061/1042/1062/1043/1052 models — cross-verified against ISUZU OEM parts catalog
- Product Condition: Brand new, brand MAMUR (MAMUR No. M-3600), 1-year warranty
Data Note: This product currently lacks bearing durability bench-test data and installation success rate statistics from fleet tracking. These should be supplemented after batch production testing. Industry standards referenced include ISO 9001 quality management system and ISUZU OEM workshop manual specifications.
Failure Symptoms (Indicating Idler Pulley Replacement Is Needed)
- Sharp squealing or chirping noise from engine bay — Worn bearing loses lubrication, causing high-frequency metal-on-metal friction noise, especially noticeable on cold start
- Intermittent power steering assist or hard steering — Idler pulley binding or belt slippage causes unstable pump speed, reducing hydraulic assist output
- Belt misalignment, edge wear, or belt throwing — Excessive bearing clearance causes pulley wobble, moving the belt off its correct running path
- Metallic grinding sound at idle or during steering — Severely worn bearing races or balls create metal interference noise during rotation
- Abnormal pulley wobble or binding when rotated by hand — Feeling play, notching, or roughness when spinning the pulley by hand indicates the bearing has reached its service limit
Part Number
8-94128866-0 8941288660
Product Name
Power Steering Idler Pulley
Car Model
NHR NKR 100P
Engine Model
4JB1
Condition
100% Brand New
Origin
China Mainland
Main Market
Middle East, Asia, Africa, South America, North America & Europe
Material
High-strength aluminum alloy & precision bearings
Installation
Direct OEM replacement
Quality Standard
OEM equivalent / ISO quality control
Vehicle & Engine Compatibility
| Brand | Model | Chassis/Years | Engine |
|---|---|---|---|
| ISUZU | NKR55 | NKR(93-) | 4JB1 / 4JB1T |
| ISUZU | NHR | NHR(94-) | 4JB1 / 4JB1T |
| ISUZU | 100P | 100P | 4JB1 / 4JB1T |
| ISUZU | NLR / NMR | NLR/NMR(08-) | 4JH1 / 4JG2 |
| ISUZU | NPR / NQR | NPR/NQR(94-02)(04-) | 4JB1 / 4JG2 |
| ISUZU | QKR | QKR(11-) | 4JB1 |
| ISUZU | ELF100 (Mexico) | (16-) | 4JB1 |
| JMC | 1040 / 1050 / 1060 | — | 4JB1 |
Important Notes:
- Before ordering, verify that the mounting hole pattern, belt groove profile, and pulley diameter match your original idler pulley
- The 4JB1 and 4JB1T share identical idler pulley specifications and are interchangeable
- For fitment confirmation, please provide VIN number or engine nameplate photo
Features & Benefits
| Feature | Benefit + Verification Signal |
|---|---|
| Steel construction | High strength and fatigue resistance, maintaining stable operation under high-temperature and high-vibration engine bay conditions — based on industry-standard steel idler pulley performance criteria |
| Precision bearing assembly | Ensures smooth pulley rotation, reducing belt wear and noise — qualified by smooth rotation without binding or play |
| OEM direct-fit | Mounting holes and belt groove profile match OEM specifications, requiring no additional machining |
| ISUZU + JMC dual-platform compatibility | One part number covers multiple ISUZU and JMC light truck models, reducing inventory SKU management complexity |
| 1-year warranty | Product warranty coverage reduces procurement risk |
Quality Control & Verification
| QC Item | Verification Method |
|---|---|
| Appearance & surface defects | Visual inspection + surface roughness check |
| Mounting hole accuracy | Caliper/plug gauge measurement against OEM specs |
| Bearing rotation flexibility | Manual rotation test for binding, play, or abnormal noise |
| Belt groove profile & diameter | Contour gauge/caliper measurement for belt matching |
| Weight verification | Weighing against standard value of 0.6 kg |
| Packaging integrity | Piece-by-piece packaging inspection |
Installation & Maintenance Recommendations
IMPORTANT: Disconnect the negative battery terminal before installation. Ensure the engine is completely cool. Professional installation is strongly recommended.
Installation Guidelines
(Refer to ISUZU 4JB1 workshop manual for exact specifications):
- Release the power steering pump drive belt tensioner and remove the belt
- Remove the old idler pulley mounting bolt and take out the old pulley
- Clean the mounting surface; inspect the mounting bolt for wear or stretching
- Install the new idler pulley in position; tighten the mounting bolt to specified torque (refer to workshop manual)
- Reinstall the belt and adjust tension to specification
- Start the engine and check for smooth belt operation, abnormal noise, or belt misalignment
Maintenance Schedule
- Inspect idler pulley rotation flexibility and belt tension every 20,000 km
- Inspect bearing condition at 80,000–100,000 km or upon abnormal noise or reduced steering assist
- Under normal maintenance conditions, 4JB1 idler pulleys can exceed 80,000 km service life (varies by operating conditions and maintenance quality)
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