ISUZU Brake Wheel Cylinder 25.4mm Bore Size ISO/TS16949 Certified OEM Standard Replacement for NKR 100P 4JB1 Rear Left
Price:
Negotiable
MOQ:
20 PCS
Delivery Time:
5-8 Work Days
Brand:
YIMI
Product Description
ISUZU Brake Wheel Cylinder 8-97078682-0 8970786820 for NKR 100P 4JB1 — Rear Left 25.4mm OEM Standard
ISUZU Brake Wheel Cylinder 8-97078682-0 8970786820 Compatible with NKR 100P 4JB1 Engine — Rear Left 25.4mm OEM Standard Replacement
Product Overview
The ISUZU Brake Wheel Cylinder with OEM numbers 8-97078682-0 / 8970786820 is a precision-engineered replacement designed for ISUZU NKR 100P series light-duty trucks, compatible with 4JB1 diesel engines. This component is a core actuation element of the vehicle's hydraulic braking system — the Rear Left 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.
Working Principle
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.
Failure Symptoms
⚠️ Inspect immediately if any of these 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 |
Verifiable Data
???? Based on Industry Standards & General Validation
Bore Size: 1 inch (25.4mm) — verified on test bench
Installation Position: Rear Left (LH)
Certifiion: ISO/TS16949 and CE certified
Quality: 100% tested before shipment
Warranty: 1 year
Supply Capacity: 10000 sets/month
Delivery Time: 5–8 working days
Minimum Order Quantity: 5 pieces
Product Specifiions
| Part Number: | 8-97078682-0 8970786820 |
| Car Model: | NKR 100P |
| Engine Model: | 4JB1 |
| Condition: | 100% Brand New |
| Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe |
| Material: | High-strength aluminum alloy & precision bearings |
Vehicle & Engine Compatibility
| Brand | Model Series | Compatible Engine | Notes |
|---|---|---|---|
| ISUZU | NKR 100P | 4JB1 | Light-duty truck |
| ISUZU | ELF | 4JB1 | Light-duty truck |
| ISUZU | NPR | 4JB1 | Light/medium-duty truck |
Important Fitment Warnings
- Number Confirmation: This product number is 8-97078682-0 / 8970786820. Cross-reference numbers include 8-94128-143-1, 8941281431. Verify the specific number on the original part before ordering.
- Installation Position: This is the Rear Left 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.
Features & Benefits
| Feature | Benefit + Verifiion Signal |
|---|---|
| 1 Inch (25.4mm) Precision Bore | Provides adequate hydraulic thrust for responsive, reliable braking — effectively reduces stopping distance and enhances driving safety. |
| ISO/TS16949 Quality Management Certified | Internationally recognized automotive industry quality standard ensuring full-process quality control. |
| CE Certified | Internationally recognized quality certifiion ensuring compliance with European safety, health, and environmental standards. |
| 100% Factory Quality Inspection | Every piece undergoes strict quality inspection — 100% tested. |
| 1-Year Warranty | Reliable after-sales protection — 1-year quality guarantee. |
| Broad OEM Cross-Compatibility | Replaces OEM numbers 8-97078682-0 / 8970786820; compatible with 8-94128-143-1, 8941281431, 8971398420 and other numbers — fits NKR 100P, ELF, NPR models. |
Quality Control & Verifiion
| QC Item | Inspection Method | Acceptance Criterion | Frequency |
|---|---|---|---|
| Cylinder bore size | Bore gauge / CMM | 25.4mm ± tolerance | 100% |
| Piston-to-bore clearance | Special gauges | Standard range | Batch sampling |
| Seal integrity | Visual + dimensional inspection | No damage, no deformation | 100% |
| Hydraulic seal test | Pressure test bench | No leakage; stable pressure retention | 100% |
| Material composition | Spectrometer | Per metal standard | Batch sampling |
| Surface anti-corrosion | Salt spray test | Per anti-corrosion standard | Annual sampling |
Installation & Maintenance Recommendations
⚠️ IMPORTANT SAFETY NOTICE:
The brake wheel cylinder is a critical braking system safety component that directly affects vehicle braking performance and driving safety. Professional installation with specialized tools is strongly recommended.
The brake wheel cylinder is a critical braking system safety component that directly affects vehicle braking performance and driving safety. Professional installation with specialized tools is strongly recommended.
Installation Guidelines (Reference Workshop Manual):
Preparation:
- Confirm installation position (Rear Left) and part number (8-97078682-0)
- Prepare tools: Socket wrench, brake line wrench, torque wrench, brake fluid (DOT 3 or DOT 4)
- Recommended to also prepare: Brake shoes, brake drum
Removing Old Wheel Cylinder:
- 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.
- Carefully remove the old brake wheel cylinder.
Installing New Wheel Cylinder:
- Clean mounting surface: Thoroughly clean the brake backing plate mounting surface — ensure no oil, dirt, or debris.
- Install new cylinder: Position the new cylinder correctly and torque mounting bolts to specifiion.
- Connect brake line: Reconnect the brake fluid line — ensure tight, leak-free connection.
- Fill brake fluid: Fill the master cylinder reservoir with DOT 3 or DOT 4 brake fluid to the correct level.
- Brake system bleeding: Mandatory — bleed the brake system starting from the farthest wheel to remove air from lines until the brake pedal feels firm.
- Leak check: Inspect all connections and cylinder body — confirm no brake fluid leakage.
Post-Installation Checks (Mandatory):
- Brake pedal feel check: Depress brake pedal — confirm firm feel, no sponginess, normal travel.
- Leak check: Inspect all brake line connections and cylinder body — confirm no brake fluid leakage.
- Road test: Perform low-speed brake test — confirm balanced braking, no pulling, no abnormal noise, normal stopping distance.
Maintenance Schedule
| 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 |
Packaging & Supply
| Item | Detail |
|---|---|
| Packaging | Neutral packaging or customized per customer request |
| Quantity per package | 1 pc/box (standard shipment packaging) |
| Brand | BZLP |
| Place of Origin | China |
| Customization Options | OEM custom packaging / neutral packaging / private labeling |
| Minimum Order Quantity | 5 pieces |
| Delivery Time | 5–8 working days |
| Supply Capacity | 10000 sets/month |
| Payment Terms | T/T, Western Union |
| Warranty | 1 year |
| Target Customers | Truck parts wholesalers, light-duty truck repair shops, fleet purchasers, export traders |
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Yimi (Guangzhou) Automotive Parts Co, Ltd
Location
Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
Contact Person
James