ISUZU Rear Brake Wheel Cylinder 1-3/16 Inch Bore Heavy-Duty Cast Iron ISO/TS16949 Certified for NKR NPR 4BD1 4HF1
Basic Properties
Place of Origin:
CHINA
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
NKR NPR 4BD1 4HF1
Trading Properties
Minimum Order Quantity:
20 PCS
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| Gear Teeth: | 16 Teeth | Material: | Heavy-Duty Cast Iron |
| Brake Type: | Drum Brake | Installation Position: | Rear Right (RH) |
| Part Type: | Hydraulic Brake Wheel Cylinder Assembly | Bore Size: | 1-3/16 Inch (30.16mm) |
| Cooling Type: | Engine Coolant Circulation | Weight: | Standard |
| High Light: | 1-3/16 Inch Bore Rear Brake Wheel Cylinder,Heavy-Duty Cast Iron Hydraulic Brake Wheel Cylinder Assembly,ISO/TS16949 Certified Brake Wheel Cylinder |
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Product Description
ISUZU Rear Brake Wheel Cylinder 8-97139824-0 8971398240
ISUZU Rear Brake Wheel Cylinder 8-97139824-0 8971398240 Compatible with NKR NPR 4BD1 4HF1 Diesel Engine — 1-3/16 Inch Bore Rear Right OEM Standard Replacement
Product Overview
The ISUZU Rear Brake Wheel Cylinder with OEM numbers 8-97139824-0 / 8971398240 is a precision-engineered replacement designed for ISUZU NKR and NPR series light-duty trucks, compatible with 4BD1 and 4HF1 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.
Numbering Note: This product number is 8-97139824-0 / 8971398240. Cross-reference numbers include 8-97022142-0 / 8970221420 and 8-97022142-1 / 8970221421. Brands include IZUMI, DAMIN, and BZLP. Please verify the specific number and installation position based on actual vehicle configuration.
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 |
Technical Specifications
| Part Number | 8-97139824-0 8971398240 |
| Product Name | Rear Brake Wheel Cylinder |
| Car Model | NKR NPR |
| Engine Model | 4BD1 4HF1 |
| Bore Size | 1-3/16 Inch (30.16mm) |
| Gear Teeth | 16 teeth |
| Installation Position | Rear Right (RH) |
| Material | Heavy-Duty Cast Iron |
| Brake Type | Drum Brake |
| Condition | 100% Brand New |
| Origin | China Mainland |
Compatibility
Primary Applications:
| Brand | Model | Compatible Engine | Years |
|---|---|---|---|
| ISUZU | NKR | 4BD1, 4HF1 | 1994– |
| ISUZU | NPR | 4BD1, 4HF1 | 1994– |
Extended Applications:
| Brand | Model Series | Compatible Engine |
|---|---|---|
| ISUZU | NQR | 4BE1, 4HF1, 4HG1, 4HK1, 4JJ1 |
| ISUZU | NPS | 4BE1, 4HF1, 4HG1, 4HK1, 4JJ1 |
| ISUZU | NLR / NMR | 4BE1, 4HF1, 4HG1, 4HK1, 4JJ1 |
| ISUZU | ELF | 4BD1, 4HF1 |
Left/Right Side Pairing: This product is the Rear Right (RH) brake wheel cylinder. The Rear Left (LH) counterpart should be ordered separately. Please confirm whether the left or right side is needed before ordering.
Features & Benefits
1-3/16 Inch Precision Bore (30.16mm)
Provides adequate hydraulic thrust for responsive, reliable braking
Provides adequate hydraulic thrust for responsive, reliable braking
Heavy-Duty Cast Iron Construction
Excellent corrosion resistance and mechanical strength for long-term reliable operation
Excellent corrosion resistance and mechanical strength for long-term reliable operation
16-Tooth Precision Gear Adjuster
Enables precise brake shoe clearance adjustment
Enables precise brake shoe clearance adjustment
Premium Seal Design
Effectively prevents brake fluid leakage and contamination
Effectively prevents brake fluid leakage and contamination
Complete Maintenance Design
Equipped with Cooper bleeder screw and gear-style adjuster
Equipped with Cooper bleeder screw and gear-style adjuster
ISO/TS16949 Quality Certified
Internationally recognized automotive industry quality standard
Internationally recognized automotive industry quality standard
Direct-Fit Design
Manufactured to ISUZU original specifications
Manufactured to ISUZU original specifications
100% Factory Quality Inspection
Every piece undergoes strict quality inspection
Every piece undergoes strict quality inspection
1-Year Warranty
Reliable after-sales protection
Reliable after-sales protection
Broad OEM Cross-Compatibility
Replaces multiple OEM numbers for simplified sourcing
Replaces multiple OEM numbers for simplified sourcing
Important Fitment Warnings:
- This product number is 8-97139824-0 / 8971398240. Verify the specific number on the original part before ordering.
- This is the Rear Right (RH) brake wheel cylinder. Confirm whether the left or right side is needed.
- Brake wheel cylinders should be replaced in pairs (left and right) to ensure balanced braking force.
- When replacing the wheel cylinder, inspect brake shoes, brake drums, and brake lines — replace if necessary.
- Replace brake fluid (DOT 3 or DOT 4) and bleed the hydraulic system when replacing the wheel cylinder.
- The brake wheel cylinder is a critical braking system safety component — professional installation is strongly recommended.
Packaging & Supply
| Packaging | Neutral packaging or customized per customer request |
| Quantity per package | 1 pc/box (standard shipment packaging) |
| Brand | IZUMI / DAMIN / BZLP / OEM Standard |
| Place of Origin | China |
| Minimum Order Quantity | 1 piece |
| Delivery Time | 5–8 working days |
| Supply Capacity | 1000 pieces/month |
| Warranty | 1 year |
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