High-quality alloy steel Differential Spider with Carburized & Quenched heat treatment and Precision-Machined Journals for ISUZU Truck
| Core Hardness: | HRC33–48 | Heat Treatment: | Carburizing & Quenching |
| Material: | High-quality Alloy Steel (20CrMnTi Or Equivalent) | Surface Hardness: | HRC58–62 |
| Surface Roughness: | Ra≤0.8μm | Journal Accuracy: | ±0.02mm |
| Torsional Strength: | Maximum Torque Capacity ≥1,500N*m | Inspection Method: | 100% Magnetic Particle Inspection (MT) |
| High Light: | High-quality alloy steel Differential Spider,Carburized & Quenched Diff Pinion Cross,Precision-Machined Journals Differential Pinion Cross |
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The Differential Spider (Diff Pinion Cross) with OEM numbers 8972205190 / 8-97220519-0 is a verified direct-fit replacement for ISUZU trucks. This spider is a critical component of the differential assembly, responsible for mounting and supporting the differential pinion gears, allowing the drive wheels to rotate at different speeds during cornering while transmitting power from the ring gear to the axle shafts.
In the differential, the spider (cross shaft) mounts four pinion gears inside the differential case. During straight-line driving, the spider rotates with the differential case, and the pinion gears do not spin on their own axis — both side gears turn at the same speed. When cornering, the wheels travel different distances; the pinion gears spin on the spider to compensate for the speed difference between the left and right wheels, enabling smooth turns. The spider withstands tremendous torsional stress and shock loads, making it one of the most highly stressed components in the differential.
- Differential Noise — Clicking or clunking metallic sounds during turns or acceleration (spider wear or fracture)
- Vehicle Jerking During Turns — Noticeable shaking or hesitation during low-speed turns (poor pinion gear engagement)
- Uneven Tire Wear — Irregular wear on drive wheels (uneven power distribution due to faulty differential operation)
- Differential Oil Leak — Oil seepage from differential housing seals (internal debris damaging seals)
- Vehicle Pulling — Vehicle drifts to one side during straight-line driving (uneven internal resistance)
- Power Interruption — Loss of power or driveline hesitation during acceleration (spider fracture causing power loss)
- Material Verified: High-quality alloy steel (20CrMnTi or equivalent), carburized and quenched — surface hardness HRC58-62, core hardness HRC33-48 (compliant with GB/T 3077 / ISO 683)
- Torsional Strength: Maximum torque capacity ≥1,500N*m (suitable for medium/heavy-duty truck differentials) — based on industry design standards
- Precision Machining: Critical journal accuracy ±0.02mm, surface roughness Ra≤0.8μm — CNC precision machined
- Non-Destructive Testing: 100% Magnetic Particle Inspection (MT) — ensures no cracks or internal defects
- Direct OEM Interchange: Direct replacement for ISUZU original parts — OE number 8972205190 / 8-97220519-0
| Part Number | 8972205190 8-97220519-0 |
|---|---|
| Product Name | Differential Spider |
| Car Model | ISUZU Truck |
| Engine Model | ISUZU Truck |
| Condition | 100% Brand New |
| Size | Standard |
| Weight | Standard |
| 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 |
| Cooling Type | Engine coolant circulation |
| Installation | Direct OEM replacement |
| Quality Standard | OEM equivalent / ISO quality control |
| Brand | Model Series | Notes |
|---|---|---|
| ISUZU | Medium/Heavy-Duty Truck Series | Fits vehicles with compatible differential models |
- The differential spider is a critical load-bearing component of the differential assembly — fracture results in power loss and vehicle immobility
- Confirm differential model and gear specifications match before installation
- Recommended to replace pinion gears and spider as a set to ensure proper gear mesh
- Must be installed with correct torque as specified in the workshop manual
- Recommended to replace differential bearings and oil seals when replacing the spider
- For 100% accurate fitment, please provide VIN (Chassis Number) or differential model
Exceptional torsional strength and impact resistance for heavy-duty truck applications — surface hardness HRC58-62, core hardness HRC33-48 (compliant with GB/T 3077 / ISO 683)
Hard, wear-resistant surface with tough, ductile core — extends service life and reduces failure rates
Ensures accurate pinion gear installation and smooth operation — reduces gear noise and abnormal wear
Every piece tested for cracks and internal defects — eliminates safety hazards, ensures road safety
No modification needed for quick installation — exact match to ISUZU original specifications
Peace of mind on manufacturing defects — free replacement within warranty period
| QC Item | Verification Method | Standard |
|---|---|---|
| Material Composition | Spectrographic analysis | Meets 20CrMnTi / alloy steel standard (GB/T 3077 / ISO 683) |
| Surface Hardness | Rockwell hardness tester | HRC58-62 |
| Core Hardness | Rockwell hardness tester | HRC33-48 |
| Critical Journal Dimensions | Precision gauge / CMM | Accuracy ±0.02mm |
| Surface Roughness | Roughness tester | Ra≤0.8μm |
| Non-Destructive Testing | Magnetic Particle Inspection (MT) | 100% inspected — no cracks, no defects |
| Metallographic Structure | Metallurgical microscope | Meets carburized & quenched microstructure standard |
The differential spider is a critical load-bearing component of the drive axle. Improper installation or use of substandard products may cause spider fracture, resulting in power loss or even traffic accidents. Installation should be performed by qualified axle specialists.
- Safety Prep: Park on level ground, chock wheels, lift and support rear axle
- Drain Lubricant: Drain differential lubricant
- Remove Differential: Remove differential assembly from axle housing
- Remove Old Spider: Remove differential case bolts, separate case halves, remove old spider and pinion gears
- Clean & Inspect: Thoroughly clean differential case interior; inspect for wear or cracks
- Install New Spider: Install new spider into differential case; install pinion gears (recommend replacing pinion gears simultaneously)
- Check Gear Backlash: Check pinion-to-side gear backlash; adjust to specification
- Assemble Differential: Torque differential case bolts to workshop manual specification
- Install Differential: Reinstall differential assembly into axle housing; adjust bearing preload
- Fill Lubricant: Fill with hypoid gear oil (GL-5 grade) to specified level
- Road Test: Perform road test — confirm no abnormal noise and proper differential operation
| Item | Interval |
|---|---|
| Differential Oil Change | Every 40,000-60,000 km |
| Differential Inspection | Every 60,000 km or when abnormal noise occurs |
| Spider Replacement | When wear, cracks, or fracture is found; or during differential overhaul |
- Packaging: Neutral carton / Custom branded packaging
- Packaging Unit: 1 piece/box
- MOQ: Small orders accepted; volume discounts available
- Target Customers: Truck parts wholesalers, axle repair shops, fleet purchasers, cross-border e-commerce sellers
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