Wheel Cylinder Assembly 8092859701 For ISUZU TFR54 4JA1 Pickup — Rear Brake Cylinder / Caliper Assembly, 3.95kg

The Wheel Cylinder Assembly with reference 8092859701 is a verified replacement brake component for the ISUZU TFR54 pickup equipped with the 4JA1 (2.5L diesel) engine. This assembly is cataloged under multiple functional descriptions across the aftermarket supply chain — "Wheel Cylinder" (HJULCYLINDER / RATAS CILINDRAS), "Brake Wheel Cylinder ASM", and "Brake Caliper Assembly" — reflecting both regional naming conventions and the possibility that the same casting or assembly serves different brake configurations or is packaged differently by different suppliers.

The unit carries a gross weight of 3.95 kg, which is substantially heavier than a typical bare wheel cylinder and suggests that the assembly may include additional components (caliper body, bracket, or a complete corner assembly) depending on the supplier's packaging definition. The actual dimensions are 20 × 10 × 13 cm, and the confirmed factory number is 8-09285970-PT. The associated OE number 350112006 is also cross-referenced to a front left brake caliper for the ISUZU TFS 4WD, indicating that this part number family spans both TFR54 and TFS applications in different positions and brake architectures.

1. Confirm the required part first: Verify whether the vehicle uses drum or disc rear brakes, and confirm whether the required part is for the front or rear position. Compare the physical form of the original unit to the replacement.
2. Safety first: Park on level ground, engage the parking brake, and chock the wheels. Wear safety glasses and gloves.
3. Remove the wheel and brake assembly: For drum brakes, remove the drum; for disc brakes, remove the caliper. Inspect the brake shoes/pads and disc/drum for wear.
4. Disconnect the hydraulic line: Place a drain pan underneath, disconnect the brake line, and plug the line immediately to prevent contamination.
5. Remove the old unit: Unbolt the wheel cylinder or caliper from the backing plate/knuckle. Note the orientation and any mounting hardware.
6. Install the new unit: Position the replacement, reconnect the hydraulic line, and torque the mounting bolts to the workshop manual specification.
7. Bleed the brake system: Fill the reservoir with DOT 3 or DOT 4 fluid and bleed until clear, bubble-free fluid flows from the bleeder screw.
8. Test operation: Verify firm pedal feel and check for leaks. Road-test at low speed before returning the vehicle to service.