The FAW 2402010FB4A reducer and differential assembly is a core drivetrain component built for FAW commercial heavy-duty trucks. Manufactured under original OEM specifications, this genuine differential unit divides power between the drive wheels while multiplying torque, keeping your truck moving smoothly and safely across highway and off-road conditions.
⚙️ Reliable Drivetrain Strength for Heavy-Duty Diesels
Maintaining sturdy gear mesh and smooth cornering traction is vital to handling heavy payloads without axle failure. The 2402010FB4A differential assembly delivers dependable performance:
- High-Torque Gear Reduction: Hardened ring and pinion gears handle massive engine power loads without slipping or premature wear.
- Smooth Cornering Operation: Precision internal spider gears allow outer wheels to rotate faster than inner wheels during sharp turns.
- Direct OEM Fit: Engineered to match factory axle housing bolt patterns and drive shaft flanges for a precise, secure installation.
📊 Technical Specifications & Keyword Reference
| Feature | Technical Details |
| Primary OEM Part Number | 2402010FB4A |
| Focus Component | Reducer and Differential Assembly |
| Vehicle Compatibility | FAW J6, FAW J6P |
| Product Function | Rear Axle Torque Distribution & Gear Reduction |
| 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 |
| 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 |
| 11 | 2402094-A6A | Adjusting gasket – driving bevel gear bearing seat (t=0.1) | As required |
| 2402096-A6A | Adjusting gasket – driving bevel gear bearing seat (t=0.2) | As required | |
| 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 |
| B | 2403015AB4A/A | Differential housing assembly (matching part) | 1 |
| 27 | 2403017AB4A/A | Carrier (LH), differential | 1 |
| 28 | 2403018-B4A/A | Carrier (RH), differential | 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 |
❓ Frequently Asked Questions (Technical & Buying Guide)
Q: What is the main function of the 2402010FB4A reducer and differential assembly?
A: It reduces drive shaft speed to increase torque to the wheels and allows the left and right drive wheels to turn at different speeds when cornering.
Q: What are the common signs of a failing differential assembly?
A: Common signs include whining or howling noises from the rear axle during acceleration, clunking sounds when shifting into gear, or visible oil leaks around the axle housing.
Q: How do I verify that part number 2402010FB4A fits my truck?
A: You can check your parts catalog or send your FAW truck chassis VIN and axle model number to our technical support team via WhatsApp at +86 186 7197 8898 for instant confirmation.
🤝 Global Wholesale & Export Enquiries
We export genuine FAW heavy-duty drivetrain, axle, 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.
