Product Description
Reconditioned Toyota HiLux KUN26 Front Differential Assembly (3.7 Ratio)
If your Toyota HiLux front differential is producing bearing noise, leaking oil, or suffering from excessive gear wear, fitting a professionally reconditioned unit is a smart, cost-effective way to restore dependable four-wheel drive performance. At Gympie 4WD Spares, every front diff is completely disassembled, thoroughly cleaned, inspected, and rebuilt by our experienced 4×4 drivetrain specialists to meet or exceed original factory standards.
Vehicle & Product Specifications
| Vehicle Model | Toyota HiLux KUN26 |
|---|---|
| Assembly Type | Front Differential Assembly |
| Gear Ratio | 3.7 Ratio |
| Centre Type | Open Diff Centre with ADD (Automatic Disconnecting Differential) |
| SKU | RF-HDA-FR-37ADD |
| Condition | Professionally Reconditioned |
| Warranty | 12 Month / 20,000km Warranty |
| Exchange Deposit | $750 Refundable Core Deposit (Charged Upon Purchase) |
Understanding the ADD (Automatic Disconnecting Differential) System
This front diff assembly features Toyota’s ADD (Automatic Disconnecting Differential) system. ADD is an electro-vacuum actuator mechanism built into the front axle housing that automatically engages or disengages one of the front driveshafts when switching between 2WD and 4WD. In 2WD mode, it disconnects the front axle, preventing the front driveshaft and differential gears from spinning unnecessarily—reducing mechanical wear, noise, and drag on your engine to improve overall fuel efficiency.
Rebuilt with Quality Japanese Components
We believe in doing the job right the first time. Our reconditioned Toyota diffs are rebuilt using premium Japanese bearings and seals, high-grade diff rebuild kits, and genuine Toyota components where required. This ensures maximum strength, durability, and smooth operation whether you use your HiLux for daily driving, heavy towing, or rugged off-road touring.
Common Front Differential Issues in KUN26 HiLux
Over time and heavy off-road use, front differential assemblies in the KUN26 HiLux can suffer from worn ring and pinion gears, noisy carrier bearings, or failing ADD actuator seals. Installing a professionally remanufactured front diff eliminates the uncertainty of second-hand parts, providing peace of mind and long-term reliability.
Why Choose Gympie 4WD Spares?
- 4×4 Drivetrain Experts: Specialist technicians with decades of hands-on experience rebuilding Toyota gearboxes, transfer cases, and diffs.
- Premium Build Quality: High-spec Japanese bearings and precision setup to ensure backlash and mesh patterns meet factory tolerances.
- Australia-Wide Express Shipping: We freight daily to mechanical workshops and residential addresses right across the country.
- Reliable Warranty Protection: Backed by our standard 12 month / 20,000km warranty.
Exchange Deposit & Core Return Information
This reconditioned front differential assembly is supplied on an exchange basis. A core exchange deposit of $750 is charged upon purchase. This deposit is refunded once your old, suitable exchange front diff unit is returned to our workshop and assessed by our team.
Fast Australia-Wide Freight Daily
Need your replacement differential quickly? We ship reconditioned 4×4 components daily throughout Australia. Contact our friendly team today for a competitive freight quote or expert assistance in confirming the correct differential ratio for your Toyota HiLux.





