The FAW differential spider (part numbers 2403061-A6A and 2403061-A6C) is a vital internal drivetrain component built for FAW commercial heavy-duty trucks. Manufactured under original OEM specifications, this sturdy cross gear carrier links the pinion gears inside the differential housing, ensuring smooth power distribution and safe cornering during long-haul trips.
⚙️ Reliable Differential Support for Heavy-Duty Diesels
Maintaining sturdy gear alignment and reliable load distribution is vital to preventing axle failure under heavy towing. The differential spider delivers dependable performance:
- High-Strength Forged Steel: Rugged metal construction resists cracking, wear, and structural fatigue under heavy acceleration and payload stress.
- Precision Journal Alignment: Accurately ground bearing surfaces fit tightly with pinion gears to reduce backlash and internal friction.
- Direct OEM Fit: Engineered to match factory differential carrier specifications for a precise, hassle-free rebuild or repair.
📊 Technical Specifications & Keyword Reference
| Feature | Technical Details |
| Primary OEM Part Number | 2403061-A6A / 2403061-A6C |
| Focus Component | Spider – Differential |
| Vehicle Compatibility | FAW J6, FAW J6P |
| Product Function | Rear Axle Differential Gear Support & Torque Splitting |
| Quality Level | Original Equipment Manufacturer (OEM) Standard |
| Wholesale Support | +86 186 7197 8898 |
| S/N | Part Number | Part Name | Quantity |
|---|---|---|---|
| — | 2400010A51C/C | Rear axle assembly (io=4.111) | 1 |
| — | 2402010FB4A/C | Reducer and differential assembly (io=4.111) | 1 |
| 1 | 2401010B51C/A | Rear axle housing assembly | 1 |
| 2 | T905 | Breather plug | 1 |
| 3 | T62104M | Hexagon socket taper magnetic screw plug | 1 |
| 4 | CQ72324T5 | Packing washer | 1 |
| 5 | 2401051-A0R | Oil filler plug | 1 |
| 6 | 2402023-A6A/B | Bolt-tightening differential bearing cover | 4 |
| A | 2402015UA5A/C | Main reducer housing assembly | 1 |
| 7 | 2402019-A6A | Bearing cap – differential bearing | 2 |
| 8 | 2402018UA5A/D | Reducer housing | 1 |
| 9 | 2402016D1H | Bolt for tightening reducer | 10 |
| 10 | 2402017-A6A | Bolt for tightening reducer | 6 |
| 11 | 2402094-A6A | Adjusting gasket – driving bevel gear bearing seat (t=0.1) | As required |
| 11 | 2402096-A6A | Adjusting gasket – driving bevel gear bearing seat (t=0.2) | As required |
| 11 | 2402097-A6A | Adjusting gasket – driving bevel gear bearing seat (t=0.5) | As required |
| 12 | 2402075-B4A-C00/A | Cylindrical roller bearing assembly | 1 |
| 13 | 2402036DA6A/C | Driving bevel gear | 1 |
| 14 | 2402060-A6A-C00/C | Tapered roller bearing assembly | 1 |
| 15 | 2402026-A6A | Bearing seat – driving bevel gear | 1 |
| 16 | 2402091-A6A | Spacing sleeve – driving bevel gear bearing | 1 |
| 17 | 2402081-A0E/B | Adjusting washer – driving bevel gear bearing | 1 |
| 18 | 2402050-A6A-C00/D | Tapered roller bearing assembly | 1 |
| 19 | 2402055-B4A-C00/A | Driving bevel gear oil seal assembly | 1 |
| 20 | 2402067-A0E/A | Rear axle input flange dust shield | 1 |
| 21 | 2402065-A6A | Flange – driving bevel gear | 1 |
| 22 | 2402077-A6A | O-ring – driving bevel gear flange | 1 |
| 23 | 2402069-A0E/CL1 | Nut – driving bevel gear flange | 1 |
| 24 | 2402017-1H | Bolt – tightening reducer | 8 |
| 25 | 2402088-A4R/B | Bolt – driven bevel gear | 16 |
| 26 | 2402037DA6A/C | Driven bevel gear | 1 |
| B | 2403015AB4A/A | Differential housing assembly (matching part) | 1 |
| 27 | 2403017AB4A/A | Carrier differential (LH) | 1 |
| 28 | 2403018-B4A/A | Carrier differential (RH) | 1 |
| 29 | CQ33320 | Type 2 all metal hexagonal self-lock nut | 16 |
| 30 | 2402023-A0E/D | Bolt – tightening differential bearing cap | 12 |
| 31 | 2403070-A6T-C00/C | Tapered roller bearing assembly | 2 |
| 32 | CQ1421020 | Combination bolt | 4 |
| 33 | 2403072-1H/B | Lock plate – adjusting ring | 2 |
| 34 | 2403071-A4R/C | Adjusting ring – differential bearing | 2 |
| 35 | 2403053-A6A/C | Gasket – axle shaft gear | 2 |
| 36 | 2403051-A6A/B | Half shaft gear | 2 |
| 37 | 2403058-A6A/B | Washer – planetary gear | 4 |
| 38 | 2403056-A6A/C | Planetary gear | 4 |
| 39 | 2403061-A6A/C | Spider – differential | 1 |
| 40 | 2403081CA6A/A | Half axle | 1 |
| 41 | 2403083-1H | Axle shaft bolt | 20 |
| 42 | 2403082AA6A/B | Half axle | 1 |
| 43 | 2406032-B4A/A | Moving sleeve – inter-wheel differential lock | 1 |
| 44 | 3834090UA5A/A | Differential lock indicator lamp switch assembly | 1 |
| 45 | 2406028-A0E | Retracting spring – inter-wheel differential lock | 1 |
| 46 | 2406024UA5A/A | Yoke | 1 |
| 47 | 2406026UA5A | Fork shaft – differential lock | 1 |
| 48 | Q2821222 | Flat end set screw | 1 |
| 49 | CQ35212 | Thin hexagon jam nut | 1 |
| 50 | 2406014-A0E | O-ring – differential lock piston | 1 |
| 51 | 2406013-A0E | Piston – inter-wheel differential lock | 1 |
| 52 | 2406019-B4A/A | Gasket – cylinder | 1 |
| 53 | 2406015-B4A/A | Inter-wheel differential lock cylinder and bushing assembly | 1 |
| 54 | 2406017-A0E/C | Gasket – cylinder head | 1 |
| 55 | 2406016-A0E | Head – cylinder | 1 |
| 56 | 2406018-A0E | Bolt – tightening inter-wheel differential lock cylinder head | 3 |
| 57 | 2406099UA5A/A | Adjusting bolt | 1 |
| 58 | CQ35316 | Thin hexagon jam nut | 1 |
| 59 | CQ63505 | End-type elbow joint – conical tube joint coupling | 1 |
| 60 | Q5280512 | Elastic cylindrical pin | 2 |
🔧 When Should the Differential Spider Be Replaced?
The spider should be inspected when servicing the differential or rear axle. Replacement may be required if the component has visible wear, damage, or excessive clearance.
| Condition | Recommended Check |
|---|---|
| Visible wear | Inspect the spider and gear contact surfaces |
| Excessive gear play | Check the spider, gears, and washers |
| Abnormal differential noise | Inspect the complete differential gear set |
| Damaged internal parts | Check the spider and related components |
| Rear axle overhaul | Inspect all differential components |
For best results, inspect the related planetary gears, half shaft gears, and washers at the same time.
❓ Frequently Asked Questions (Technical & Buying Guide)
Q: What is the 2403061-A6A/C Spider – differential?
A: It is a differential spider, also known as a differential cross shaft, used inside compatible FAW rear axle differential assemblies.
Q: What is the function of a differential spider?
A: It supports the internal differential gears and helps maintain their correct position and movement during vehicle operation.
Q: What parts work with the 2403061-A6A/C Spider?
A: It works with related differential components such as planetary gears, half shaft gears, and washers.
Q: When should I replace the 2403061-A6A/C?
A: Replacement may be necessary when the spider has excessive wear, visible damage, or when excessive gear play or abnormal differential noise is found during inspection.
Q: How do I verify that 2403061-A6A/C fits my truck?
A: Check the original part number and compare your FAW truck’s axle and differential specifications. You can send us the truck model, axle model, or original part number for compatibility confirmation.
🤝 Global Wholesale & Export Enquiries
We export genuine FAW heavy-duty axle, differential, and commercial truck parts to fleet managers, repair shops, and auto parts distributors worldwide. Contact us today for competitive bulk pricing and fast international shipping.
