Rear Right Brake Wheel Cylinder 8-97139814-0 8971398140 8-97022029-0 8970220290 For ISUZU ELF NKR NPR NHR NPR59 4BD1 4HF1 — OEM 1-3/16″ (30mm) Drum Brake Cylinder With Bleeder Screw
Basic Properties
Place of Origin:
China
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
ISUZU ELF NKR NPR NHR NPR59 4BD1 4HF1
Trading Properties
Minimum Order Quantity:
10 pcs
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| OEM Part Numbers: | 8-97139814-0 / 8971398140 / 8-97022029-0 / 8970220290 | Part Name: | CYLINDER; WHEEL, RR BRK / Rear Brake Wheel Cylinder |
| Fitting Position: | Rear Axle, Right Hand (RH) | Wheel Bolt Pattern: | 5-Stud |
| Bore Diameter: | 1-3/16″ (30 Mm) | Fitted Diameter: | 34 Mm |
| Gear Teeth: | 16 | Material: | Heavy-Duty Cast Iron With Corrosion-Resistant Finish |
| Includes: | Bleeder Screw + Gear Adjuster | Warranty: | 12 Months |
| Engine Compatibility: | ISUZU 4BD1, 4HF1, 4JB1, 4JG2, 4JH1 | Vehicle Compatibility: | ISUZU ELF, NKR, NPR, NHR, NPR59 |
| Condition: | Brand New — 100% Quality Inspected | Weight: | Approx. 1.089 – 1.15 Kg |
| High Light: | ISUZU ELF brake wheel cylinder,30mm drum brake cylinder,OEM ISUZU brake cylinder |
||
Product Description
Rear Right Brake Wheel Cylinder 8-97139814-0 8971398140 8-97022029-0 8970220290 For ISUZU ELF NKR NPR NHR NPR59 4BD1 4HF1 — OEM 1-3/16″ (30mm) Drum Brake Cylinder With Bleeder Screw
Product Overview
The Rear Brake Wheel Cylinder with OEM numbers 8-97139814-0 (also listed as 8971398140, 8-97022029-0, 8970220290) is a verified OEM-grade direct replacement for a wide range of ISUZU light and medium-duty trucks, including the ELF, NKR, NPR, NHR, and NPR59 series. Manufactured to ISUZU's stringent OEM specifications, this wheel cylinder is a critical component of the rear drum brake system.
Important Cross-Reference Note: Part numbers 8-97139814-0, 8971398140, 8-97022029-0, and 8970220290 are interchangeable for these applications. The Left-Hand (LH) counterpart is 8-97139821-0 / 8971398210 / 8-97022028-1. Please verify your vehicle's specific requirements before ordering.
- OEM Specification — Verified by ISUZU OEM part numbers 8-97139814-0, 8971398140, 8-97022029-0, and 8970220290
- Precision 1-3/16″ (30mm) Bore — Verified by ASHIKA 65-09-905, JAPKO 65905, and KAVO PARTS BWC-9055 specifications
- Heavy-Duty Cast Iron Construction — Provides exceptional durability and heat dissipation under demanding commercial conditions
- Complete with Bleeder Screw & Gear Adjuster — Supplied with bleeder pin and gear adjuster for easy brake system bleeding and shoe clearance adjustment
- Verified OEM Fitment — Confirmed for ISUZU ELF, NKR, NPR, NHR, NPR59 models with 4BD1, 4HF1, 4JB1, 4JG2 engines from 1992-2003
- ISO/TS16949 Certified — Manufactured under strict quality control standards
- OEM Cross-Reference Verified — Interchangeable with TRW BWN411, ASHIKA 65-09-905, and JAPKO 65905
| Part Number | 8-97139814-0 8971398140 8-97022029-0 8970220290 |
| Product Name | Rear Right Brake Wheel Cylinder |
| Car Model | ISUZU ELF NKR NPR NHR NPR59 |
| Engine Model | ISUZU 4BD1 4HF1 |
| Condition | 100% Brand New |
Failure Symptoms
If your rear brake wheel cylinder is failing, you may experience one or more of the following symptoms:
- Brake Fluid Leakage: Visible fluid seeping from the rear wheels or inside the brake drum — indicates worn seals
- Soft or Spongy Brake Pedal: Pedal feels unusually soft or goes to the floor — indicates internal seal failure
- Reduced Braking Performance: Vehicle takes longer to stop or requires increased pedal pressure
- Uneven Braking: Vehicle pulls to one side during braking — indicates a seized or leaking cylinder on one side
- Contaminated Brake Shoes: Brake fluid soaking into the brake shoes, causing reduced friction and brake fade
- Low Brake Fluid Level: Unexplained drop in brake fluid reservoir level with no visible external leaks
Warning: A failing brake wheel cylinder can lead to reduced braking performance and potential brake failure — prompt replacement is essential. For optimal performance, it is strongly recommended to replace brake wheel cylinders in pairs (both rear wheels).
Vehicle & Engine Compatibility
CRITICAL: This wheel cylinder is the Rear Right-Hand (RH) unit. The Left-Hand (LH) counterpart is 8-97139821-0 / 8971398210 / 8-97022028-1.
Primary Applications
| Brand | Model | Chassis / Series | Engine | Years |
|---|---|---|---|---|
| ISUZU | ELF | NKR7_, NKS7_, NHR6_, NKR6_, NPR_6 | 4.3 TD, 4.3 DiTD | 1992-2003 |
| ISUZU | NPR59 | N-Series | 4BD1 | -- |
| ISUZU | NKR | N-Series | 4JB1, 4JG2 | -- |
| ISUZU | NPR | N-Series | 4BD1, 4HF1 | -- |
| ISUZU | NHR | N-Series | 4JB1, 4JG2 | -- |
Cross-Reference Part Numbers
| Part Number | Description | Position |
|---|---|---|
| 8-97139814-0 / 8971398140 | Rear Brake Wheel Cylinder | Right Hand (RH) — This Part |
| 8-97139821-0 / 8971398210 | Rear Brake Wheel Cylinder | Left Hand (LH) — Counterpart |
| 8-97022029-0 / 8970220290 | Rear Brake Wheel Cylinder | RH (earlier variant) |
Features & Benefits
OEM Specification — ISUZU Genuine Equivalent
Guarantees factory-fit quality and performance — verified by ISUZU OEM part numbers
Precision 1-3/16″ (30mm) Bore
Delivers consistent hydraulic pressure for reliable braking performance
Heavy-Duty Cast Iron Construction
Provides exceptional durability and heat dissipation under demanding commercial conditions
Complete with Bleeder Screw & Gear Adjuster
Facilitates easy brake system bleeding and shoe clearance adjustment during installation
ISO/TS16949 Certified
Manufactured under strict quality control standards — verified by third-party certification
Direct Bolt-On Fitment
No modifications required — engineered as a direct match for the original cylinder
100% New — No Core Charge
Guarantees zero wear, immediate braking performance, and full service life
Quality Control & Verification
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify 1-3/16″ (30mm) bore diameter, M10×1.0 inlet threads, and mounting hole spacing match OE blueprint specifications |
| Material Composition | Heavy-duty cast iron analysis to verify structural integrity and heat dissipation characteristics |
| Bore Surface Test | 100% surface testing to ensure optimum sealing surface for pressure cups |
| Leakage Test | 100% hydraulic pressure test to guarantee zero fluid leakage under operating conditions |
| Rubber Component Test | EPDM material verification for heat and corrosion resistance |
| Durability Cycle Test | 500+ hour fatigue testing to verify 200,000+ km service life |
| Final Assembly Inspection | 100% visual and functional inspection before packaging |
Installation & Maintenance Recommendations
IMPORTANT: Professional Installation Recommended
Replacing brake wheel cylinders is a critical safety procedure. It is strongly recommended to replace them in pairs (both rear wheels) for balanced braking performance.
Replacing brake wheel cylinders is a critical safety procedure. It is strongly recommended to replace them in pairs (both rear wheels) for balanced braking performance.
Pre-Installation Checklist
- CRITICAL: This is the Rear Right-Hand (RH) cylinder — the LH counterpart is 8-97139821-0 / 8971398210
- Quantity Required: 2 per vehicle (one for each rear wheel)
- Inspect brake shoes, drums, and hardware for wear — replace as necessary
- Use new brake fluid (DOT 3 or DOT 4) from a sealed container
- Critical: Replace wheel cylinders in pairs (both rear wheels) for balanced braking performance
Installation Guidelines
- Safely raise the vehicle and support it on jack stands
- Remove the rear wheels and brake drums
- Disconnect the brake line from the old wheel cylinder
- Remove the mounting bolts securing the cylinder to the backing plate
- Remove the old cylinder and clean the backing plate thoroughly
- CRITICAL: Install the new cylinder with NEW mounting bolts
- Torque the mounting bolts to manufacturer's specified torque settings (refer to ISUZU workshop manual)
- Reconnect the brake line and torque to specification (M10×1.0)
- CRITICAL: Bleed the brake system thoroughly to remove all air (start with the wheel furthest from the master cylinder)
- Refill with fresh DOT 3 or DOT 4 brake fluid
- Reinstall the brake drums and wheels
- Test brake pedal feel and braking performance before road test
Maintenance Schedule
- Inspection: Every 50,000 km / 12 months. Check for fluid leaks, brake pedal feel, and braking performance
- Fluid Replacement: Every 2 years or 40,000 km — replace brake fluid to prevent internal corrosion
- Replacement: Immediately if failure symptoms appear. Replace in pairs for balanced braking
Packaging & Supply
- Packaging: Each brake wheel cylinder is securely packed in a neutral box, color box, or customer brand package
- Pack Quantity: 1 PC
- Weight: Approx. 1.089 - 1.15 kg
- Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
RELATED PRODUCTS
Oil Power Steering Pump Assembly for ISUZU NPR 4HF1 8971365740 8971151350 8-97136574-0 8-97115135-0
Oil Power Steering Pump Assembly for ISUZU NPR 4HF1 8971365740 8971151350 8-97136574-0 8-97115135-0 Part Number: 8971365740 8971151350 8-97136574-0 8-97115135-0 Product Name: Oil Power Steering Pump Car Model: ISUZU NPR Engine Model: ISUZU 4HF1 Condition: 100% Brand New Size: Standard Weight: ...
Clutch Disc for ISUZU NPR 4BD1 8-97083723-0 8970837230
Clutch Disc for ISUZU NPR 4BD1 8-97083723-0 8970837230 Part Number: 8-97083723-0 8970837230 Product Name: Clutch Disc Car Model: ISUZU NPR Engine Model: ISUZU 4BD1 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle East ,Asia,Africa, South America, ...
Rear Final Drive Assembly for ISUZU NKR55 8943389020 8-94338902-0
Rear Final Drive Assembly for ISUZU NKR55 8943389020 8-94338902-0 Part Number: 8943389020 8-94338902-0 Product Name: Rear Final Drive Assembly Car Model: ISUZU NKR55 Engine Model: ISUZU NKR55 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle East ...
Turbocharger Assembly for ISUZU XE 6HK1 1-14400390-0 1144003900
Turbocharger Assembly for ISUZU XE 6HK1 1-14400390-0 1144003900 Part Number: 1-14400390-0 1144003900 Product Name: Turbocharger Assembly Car Model: ISUZU XE Engine Model: ISUZU 6HK1 Condition: 100% Brand New Size: Standard Weight: Standard Origin: China Mainland Main Market: Middle East ,Asia,Africa...
