ISUZU Final Pinion Bearing OEM Standard 1.3kg with 1-Year Warranty for CVZ CXZ ESZ Rear Axle Differential
Basic Properties
Place of Origin:
CHINA
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
CVZ CXZ ESZ
Trading Properties
Minimum Order Quantity:
20 PCS
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| Net Weight: | 1.3 Kg | Bearing Type: | Tapered Roller Bearing |
| Part Type: | Rear Axle Differential Rolling Bearing | Compatible Models: | ISUZU CVZ, CXZ, ESZ |
| OEM Part Number: | 1-09812042-1 / 1098120421 | Cross-Reference Numbers: | 1-09812042-0 / 1098120420、1098120412、1098120360 |
| Installation Position: | Rear Axle Differential Housing / Pinion Gear Shaft | Reference Model: | 30310D |
| High Light: | OEM Standard Final Pinion Bearing,1.3kg Rear Axle Differential Bearing,1-Year Warranty Tapered Roller Bearing |
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Product Description
ISUZU Final Pinion Bearing 1-09812042-1 1098120421 for CVZ CXZ ESZ — 1.3kg OEM Standard
ISUZU Final Pinion Bearing 1-09812042-1 1098120421 Compatible with CVZ CXZ ESZ Heavy-Duty Trucks — 1.3kg Rear Axle Differential Core Component
The ISUZU Final Pinion Bearing with OEM numbers 1-09812042-1 / 1098120421 is a precision-engineered replacement designed for ISUZU CVZ, CXZ, and ESZ series heavy-duty trucks. This component is a core rotating part of the rear axle differential — the Final Pinion Bearing (BEARING; FINAL PINION) — responsible for supporting the pinion gear shaft and ensuring smooth, efficient power transmission from the driveshaft to the drive wheels.
Numbering Note: This product number is 1-09812042-1 / 1098120421. Variants include 1-09812042-0 / 1098120420. Other sources indicate this bearing also fits ISUZU NQR71/75, NPR, FSR90 models. Please verify the specific number based on actual vehicle configuration.
Working Principle
The final pinion bearing is a critical support component of the rear axle differential assembly, installed between the differential housing and the pinion gear shaft. Its working principle includes:
- Rotational Support: Provides stable rotational support for the pinion gear shaft, ensuring precise axis alignment during high-speed rotation.
- Load Bearing: Withstands radial and axial compound loads generated during vehicle operation, including vehicle weight, payload, acceleration/deceleration impacts, and cornering lateral forces.
- Friction Reduction: Converts sliding friction to rolling friction through precision rolling elements, significantly reducing energy loss and heat generation.
- Gear Mesh Precision: Maintains correct pinion-to-ring gear backlash within specification, preventing premature gear wear or noise.
Failure Symptoms
⚠️ Inspect immediately if any of these occur:
| Symptom | Probable Cause |
|---|---|
| Persistent "humming" or "howling" noise from rear axle, varying with speed | Worn bearing; fatigue spalling on rolling elements or raceways |
| "Clunking" impact noise during acceleration or deceleration | Excessive bearing clearance causing abnormal gear backlash |
| Dirty axle oil containing metal particles | Bearing wear debris contaminating the lubricant |
| Abnormal rear axle overheating | Bearing failure causing increased friction and heat |
| Poor power delivery and increased fuel consumption | Bearing binding or improper preload increasing driveline resistance |
Verifiable Data
🔬 Based on Industry Standards & General Validation:
- ✅ Net Weight: 1.3 kg — verified by precision weighing
- ✅ HS Code: 848240000 — international classification for rolling bearings
- ✅ Parts Figure Number: 425-050 — for quick technician reference
- ✅ Packaging: 1 piece/carton
- ✅ OE Cross-Reference Verified: Replaces OEM numbers 1-09812042-1 / 1098120421; compatible with 1-09812042-0 / 1098120420, 1098120412, 1098120360 / 1098120370
- ✅ Compatible Models: ISUZU CVZ, CXZ, ESZ
- ✅ Extended Compatibility: ISUZU NQR71/75, NPR, FSR90, FSR FTR 700
- ✅ Compatible Engines: ISUZU 4HK1 5.2L, 4JJ1 3.0L
- ✅ Condition: Brand New — 100% quality inspected
- ✅ Warranty: 1 year
- ✅ Supply Capacity: Stable inventory available
- ✅ Delivery Time: 15–20 days after deposit
Product Specifications
| Part Number: | 1-09812042-1 1098120421 |
| Product Name: | Final Pinion Bearing |
| Car Model: | CVZ CXZ |
| Engine Model: | ESZ |
| 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 |
| Material: | High-strength aluminum alloy & precision bearings |
| Installation: | Direct OEM replacement |
| Quality Standard: | OEM equivalent / ISO quality control |
Vehicle & Engine Compatibility
Primary Applications:
| Brand | Model Series | Compatible Engine | Notes |
|---|---|---|---|
| ISUZU | CVZ | 6HK1, 6WG1 | Heavy-duty truck |
| ISUZU | CXZ | 6HK1, 6WG1, 10PE1 | Heavy-duty truck |
| ISUZU | ESZ | 6WG1 | Heavy-duty truck |
Extended Applications:
| Brand | Model Series | Compatible Engine | Notes |
|---|---|---|---|
| ISUZU | NQR71 / NQR75 | 4HK1 | Medium-duty truck |
| ISUZU | NPR | 4HK1, 4JJ1 | Light/medium-duty truck |
| ISUZU | NRR | 4HK1 | Medium-duty truck |
| ISUZU | FSR90 | 4HK1 | Medium-duty truck |
| ISUZU | FSR FTR 700 | 4HK1, 6HK1 | Medium-duty truck |
| ISUZU | FVR | 6HK1 | Heavy-duty truck |
Extended Compatibility Note: This product is primarily designed for ISUZU CVZ/CXZ/ESZ heavy-duty trucks. Other sources indicate it also fits ISUZU NQR71/75, NPR, FSR90 models. Please verify the chassis code and engine model on the vehicle nameplate before ordering.
Important Fitment Warnings
- Number Confirmation: This product number is 1-09812042-1 / 1098120421. Same series includes 1-09812042-0 / 1098120420 and cross-reference 1098120412. Verify the specific number on the original part before ordering.
- Bearing Preload: When installing the final pinion bearing, preload torque and specifications must strictly follow ISUZU factory workshop manual. Incorrect preload will cause premature bearing failure or gear noise.
- Associated Components: When replacing the pinion bearing, it is recommended to inspect the drive pinion bearing and differential bearings.
- Lubricant Replacement: Replace rear axle gear oil (GL-5 grade) and thoroughly clean the differential housing when replacing the bearing.
- Pair Replacement Recommended: If one bearing is damaged, it is recommended to replace in pairs for consistent bearing life and gear mesh.
- Professional Installation: Differential bearings are critical driveline components requiring precision adjustment and measurement. Must be performed by a qualified repair technician.
Features & Benefits
OEM Standard Design
Manufactured to ISUZU original specifications — ensures perfect fitment for CVZ/CXZ/ESZ heavy-duty trucks; direct OEM replacement, no modification required.
1.3kg Robust Construction
Excellent load capacity and impact resistance for demanding commercial truck applications — engineered for ISUZU CVZ/CXZ/ESZ heavy-duty operating conditions.
Precision Tapered Roller Design
Effectively handles radial and axial compound loads for precise gear mesh — reduces driveline noise and vibration; extends gear life.
100% Factory Quality Inspection
Every piece undergoes strict quality inspection — 100% tested.
Broad OEM Cross-Compatibility
Replaces OEM numbers 1-09812042-1 / 1098120421; compatible with 1-09812042-0, 1098120412, 1098120360 and other numbers — simplifies sourcing for repair shops.
Broad Vehicle Compatibility
Fits CVZ, CXZ, ESZ, NQR71/75, NPR, FSR90 and other ISUZU models.
1-Year Warranty
Reliable after-sales protection — 1-year quality guarantee.
Quality Control & Verification
| QC Item | Inspection Method | Acceptance Criterion | Frequency |
|---|---|---|---|
| Bearing dimensional accuracy | CMM | OEM standard size ± tolerance | Batch sampling |
| Bearing radial clearance | Special clearance gauge | Standard range | Batch sampling |
| Bearing axial clearance | Special clearance gauge | Standard range | Batch sampling |
| Rolling element integrity | Visual + NDT inspection | No cracks, no spalling | 100% |
| Material hardness | Rockwell hardness tester (HRC) | Standard hardness range | Batch sampling |
| Rotation smoothness | Special rotation test bench | Smooth rotation; no binding; no noise | 100% |
| Visual inspection | Visual | No scratches, burrs, or rust | 100% |
Installation & Maintenance Recommendations
IMPORTANT SAFETY NOTICE: The final pinion bearing is a critical driveline component. Replacement requires differential disassembly, bearing preload adjustment, and gear backlash measurement. Must be performed by a qualified repair technician. Improper operation may cause severe axle damage or safety incidents.
Installation Guidelines (Reference Workshop Manual):
Preparation:
- Confirm installation position and part number (1-09812042-1)
- Prepare tools: Socket wrench, torque wrench, bearing press tool, dial indicator, bearing puller
- Recommended to also prepare: Drive pinion bearing, differential bearings, rear axle gear oil (GL-5), differential housing gasket
Removing Old Bearing (Reference Steps):
- Park vehicle on level surface, engage parking brake, and securely support with jack stands.
- Drain rear axle gear oil.
- Remove the driveshaft; mark driveshaft-to-flange alignment.
- Remove the differential assembly (or rear axle cover).
- Carefully remove the old bearing using a bearing puller, note shim positions and quantities.
Installing New Bearing (Installation Sequence):
- Clean mounting surface: Thoroughly clean the differential housing bearing bore and shaft journal — ensure no oil or debris.
- Inspect new bearing: Check for defects, rust, or damage.
- Install new bearing: Press the new bearing evenly into position using a bearing press tool. DO NOT use a hammer directly on the bearing.
- Install shims: Reinstall shims in the positions and quantities recorded during disassembly.
- Adjust bearing preload: Adjust to ISUZU workshop manual torque and preload specifications; measure axial play with a dial indicator.
- Check gear mesh: Install the drive and driven pinion gears; verify backlash and contact pattern.
- Fill gear oil: Fill with GL-5 grade rear axle gear oil to correct capacity.
- Install driveshaft: Reinstall driveshaft per alignment marks; torque connecting bolts to specification.
Post-Installation Checks (Mandatory):
- Noise check: Start vehicle and run at low speed on a lift — check for abnormal axle noise.
- Leak check: Inspect all seals and gaskets for gear oil leakage.
- Road test: Perform road test — confirm no noise or vibration during acceleration, deceleration, and cornering.
Maintenance Schedule:
| Item | Interval | Notes |
|---|---|---|
| Rear axle oil inspection | Every 10,000 km / each service | Check oil level and quality; metal particles indicate bearing wear |
| Rear axle noise check | Every 10,000 km / each service | Listen for "humming" noise during driving |
| Rear axle oil replacement | Every 40,000～50,000 km | Use GL-5 grade gear oil |
| Differential bearing inspection | Upon noise or oil abnormality | Inspect immediately if noise detected |
Packaging & Supply
| Packaging | Neutral box / Color box / Custom brand packaging |
| Quantity per package | 1 piece/carton |
| Product Net Weight | 1.3 kg |
| Brand | OEM Standard |
| Place of Origin | China |
| Customization Options | OEM custom packaging / neutral packaging / private labeling |
| Minimum Order Quantity | Small quantities accepted |
| Delivery Time | 15–20 days after deposit |
| Warranty | 1 year |
| HS Code | 848240000 |
| Target Customers | Truck parts wholesalers, heavy-duty truck repair shops, fleet purchasers, export traders |
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