ISUZU Brake Wheel Cylinder 1 Inch Bore 16-Tooth Gear Heavy-Duty Cast Iron Rear Right OEM Standard
| Gear Teeth: | 16 Teeth | Net Weight: | 1.0 Kg |
| Material: | Heavy-Duty Cast Iron | Brake Type: | Drum Brake |
| Bore Size: | 1 Inch (25.4mm) | Installation Position: | Rear Right (RH) |
| Feature: | Two-level Mounting Step | Part Type: | Hydraulic Brake Wheel Cylinder Assembly |
| High Light: | 1 Inch Bore Brake Wheel Cylinder,16-Tooth Gear Hydraulic Brake Wheel Cylinder Assembly,Heavy-Duty Cast Iron Rear Right Brake Wheel Cylinder |
||
The ISUZU Brake Wheel Cylinder with OEM numbers 8-97139841-0 / 8971398410 is a precision-engineered replacement designed for ISUZU NKR, NLR, and ELF series light-duty trucks, compatible with 4JB1, 4JH1, 4JG1, 4JJ1, and 4HG1 diesel engines. This component is a core actuation element of the vehicle's hydraulic braking system — the Rear Right Brake Wheel Cylinder Assembly — responsible for converting hydraulic pressure from the master cylinder into mechanical force to push the brake shoes against the brake drum.
The brake wheel cylinder is a critical actuation component of the hydraulic braking system, mounted on the brake backing plate and connected to the master cylinder via brake fluid lines.
- Hydraulic Input: When the driver depresses the brake pedal, the master cylinder converts pedal force into hydraulic pressure transmitted through the brake fluid lines.
- Piston Actuation: Hydraulic pressure pushes the piston inside the wheel cylinder outward.
- Brake Shoe Expansion: The piston transmits force through the push rod to the brake shoes, expanding them against the rotating brake drum to generate friction for deceleration.
- Brake Release: When the driver releases the brake pedal, hydraulic pressure is released and return springs pull the piston back, separating the brake shoes from the drum.
Inspect immediately if any of these symptoms occur:
| Symptom | Probable Cause |
|---|---|
| Reduced braking performance; increased stopping distance | Worn internal seals; hydraulic leakage; insufficient braking force |
| Vehicle pulls to one side during braking | Single-side cylinder malfunction; uneven braking force |
| Brake drag; vehicle still feels braked after pedal release | Stuck piston; cylinder fails to return |
| Visible brake fluid leakage at the wheel cylinder area | Worn/damaged cylinder seals |
| Soft or spongy brake pedal; increased pedal travel | Internal leakage or air in hydraulic system |
- Bore Size: 1 Inch (25.4mm) — industry-verified standard specification for NKR/4JB1 models
- Gear Teeth: 16 teeth — for brake shoe clearance adjustment
- Installation Position: Rear Right (RH) — designed for precise fitment on the rear right wheel
- Feature: Two-level mounting step — ensures secure and reliable installation
- Material Standard: Heavy-Duty Cast Iron — durable, capable of withstanding high pressure and thermal cycling
- Brake Type: Drum Brake
- Pre-assembled Seals: High-quality pre-assembled seals prevent leaks and contamination
- Bleeder Screw: Standard equipped — facilitates brake system bleeding
- Brand Certification: DAMIN brand, ISO/TS16949 certified
- Place of Origin: China
- Supply Capacity: 1000 pieces/month
- Delivery Time: 5–8 working days
| Brand | Model | Compatible Engine | Years |
|---|---|---|---|
| ISUZU | NKR | 4JB1, 4JH1, 4JG1, 4JJ1 | 1994– |
| ISUZU | NHR | 4JB1, 4JH1, 4JG1, 4JJ1 | 1994– |
| ISUZU | NLR / NMR | 4JB1, 4JH1, 4JG1, 4JJ1 | 2008– |
| ISUZU | ELF100/200/300 | 4JB1, 4JH1, 4JG1, 4JJ1 | — |
| JMC | 1030, 1031, 1032, 1040, 1041, 1042, 1043, N720 | — | — |
- Number Confirmation: This product number is 8-97139841-0 / 8971398410. Cross-reference numbers include 8-97078683-0 / 8970786830, 8-94128142-1/2/3 / 8941281421/1422/1423, and 3502310A1 (JMC). Verify the specific number on the original part before ordering.
- Installation Position: This is the Rear Right (RH) brake wheel cylinder. Confirm whether the left or right side is needed.
- Pair Replacement Recommended: Brake wheel cylinders should be replaced in pairs (left and right) to ensure balanced braking force.
- Associated Components: When replacing the wheel cylinder, it is recommended to inspect brake shoes, brake drums, and brake lines — replace if necessary.
- Brake Fluid Replacement: Replace brake fluid (DOT 3 or DOT 4) and bleed the hydraulic system when replacing the wheel cylinder.
- Professional Installation: The brake wheel cylinder is a critical braking system safety component — professional installation is strongly recommended.
Provides adequate hydraulic thrust for responsive, reliable braking
Excellent corrosion resistance and mechanical strength for long-term reliable operation
Enables precise brake shoe clearance adjustment
Ensures secure and reliable installation on the brake backing plate
Effectively prevents brake fluid leakage and contamination
Facilitates brake system bleeding for stable braking performance
Internationally recognized automotive industry quality standard
Manufactured to ISUZU original specifications — no modifications needed
| QC Item | Inspection Method | Acceptance Criterion |
|---|---|---|
| Cylinder bore size | Bore gauge / CMM | 1 inch (25.4mm) ± tolerance |
| Piston-to-bore clearance | Special gauges | Standard range |
| Seal integrity | Visual + dimensional inspection | No damage, no deformation |
| Hydraulic seal test | Pressure test bench | No leakage; stable pressure retention |
| Material composition | Spectrometer | Per cast iron standard |
| Gear precision | Special gear inspection equipment | 16-tooth standard specification |
- Confirm installation position (Rear Right) and part number (8-97139841-0)
- Prepare tools: Socket wrench, brake line wrench, torque wrench, brake fluid (DOT 3 or DOT 4)
- Park vehicle on level surface, engage parking brake, and securely support with jack stands
- Remove the relevant wheel to access the brake assembly
- Disconnect the brake fluid line from the old cylinder using a brake line wrench
- Remove bolts or fasteners securing the old cylinder
- Clean mounting surface thoroughly before installing new cylinder
- Reconnect brake fluid line and ensure tight, leak-free connection
- Fill master cylinder reservoir with DOT 3 or DOT 4 brake fluid
- Bleed brake system using bleeder screw until brake pedal feels firm
| Item | Interval | Notes |
|---|---|---|
| Brake fluid inspection | Every 10,000 km / each service | Check fluid level and color; brake fluid should be clear |
| Wheel cylinder & line leak check | Every 20,000 km | Check for brake fluid seepage |
| Brake fluid replacement | Every 2 years / 40,000 km | Brake fluid absorbs moisture; long-term use degrades performance |
| Wheel cylinder inspection | Upon symptom occurrence | Inspect/repair/replace if leakage or sticking detected |
| Item | Detail |
|---|---|
| Packaging | Neutral packaging |
| Quantity per package | 1 pc/box (standard shipment packaging) |
| Product Net Weight | 1.0 kg |
| Brand | DAMIN |
| Place of Origin | China |
| Minimum Order Quantity | 1 piece |
| Delivery Time | 5–8 working days |
| Supply Capacity | 1000 pieces/month |
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts
Engine Block 5873102680 5-87310268-0 For ISUZU 100P 4JB1 Diesel Engine Parts Part Number: 5873102680 5-87310268-0 Product Name: Engine Block Car Model: ISUZU 100P Engine Model: ISUZU 4JB1 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle East ,Asia...
Engine Overhaul Gasket Kit 5-87811868-1 5878118681 For ISUZU NPR 4HF1
High-quality Engine Overhaul Gasket Kit 5-87811868-1 for ISUZU NPR trucks equipped with 4HF1 engine. Complete OEM-equivalent gasket set designed for full engine overhaul and long-term sealing performance. Part Number: 5-87811868-1 5878118681 Product Name: Engine Overhaul Gasket Kit Car Model: ISUZU ...
Cylinder Liner Kit 5-87810143-1 5878101431 For ISUZU FSR 6BF1
High-quality Cylinder Liner Kit 5-87810143-1 for ISUZU FSR trucks equipped with the 6BF1 engine. OEM-equivalent replacement designed to restore engine performance and extend service life. Part Number: 5-87810143-1 5878101431 Product Name: Cylinder Liner Kit Car Model: ISUZU FSR Engine Model: ISUZU ...
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1
Water Pump Assembly With Gasket for ISUZU NPR59 4BC2 8970211711 8-97021171-1 Part Number: 8970211711 8-97021171-1 Product Name: Water Pump Assembly Car Model: ISUZU NPR59 Engine Model: ISUZU 4BC2 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle ...
