Front Left Rear Brake Wheel Cylinder 8-97139819-0 8971398190 8-97022031-1 8970220311 For ISUZU ELF NKR NPR NQR 4HF1 4BE1 4HG1 — OEM 1-3/16″ (30.2mm) Drum Brake Cylinder With Bleeder Screw
Key Attributes
Product Summary
Front Left Rear Brake Wheel Cylinder 8-97139819-0 8971398190 8-97022031-1 8970220311 For ISUZU ELF NKR NPR NQR 4HF1 4BE1 4HG1 — OEM 1-3/16″ (30.2mm) Drum Brake Cylinder With Bleeder Screw Product Overview The Front Brake Wheel Cylinder with OEM numbers 8-97139819-0 (also listed as 8971398190, 8...
Product Details
ISUZU ELF brake wheel cylinder
,OEM drum brake cylinder with bleeder
,ISUZU NKR 30.2mm brake cylinder
The Front Brake Wheel Cylinder with OEM numbers 8-97139819-0 (also listed as 8971398190, 8-97022031-1, 8970220311) is a verified OEM-grade direct replacement for a wide range of ISUZU light and medium-duty trucks, including the ELF, NKR, NPR, NQR, and NLR series.
This wheel cylinder is the Front Left-Hand (LH) Rear unit for RHD (Right-Hand Drive) vehicles. It features a precision 1-3/16″ (30.2mm) bore and is supplied with a bleeder screw for easy brake system bleeding during installation.
- OEM Specification — Verified by ISUZU OEM part numbers
- Precision 1-3/16″ (30.2mm) Bore — Verified by AUTOTEC EBS and manufacturer specifications
- Heavy-Duty Cast Iron Construction — Provides exceptional durability and heat dissipation
- Complete with Bleeder Screw — Easy brake system bleeding during installation
- Verified OEM Fitment — Confirmed for ISUZU ELF, NKR, NPR, NQR models with 4HF1, 4BE1, 4HG1 engines
- OEM Cross-Reference Verified — Interchangeable with TRW BWN787, Seiken SW-G354, and other major brands
If your front brake wheel cylinder is failing, you may experience one or more of the following symptoms:
- Brake Fluid Leakage: Visible fluid seeping from the front wheels or inside the brake drum
- Soft or Spongy Brake Pedal: Pedal feels unusually soft or goes to the floor
- Reduced Braking Performance: Vehicle takes longer to stop or requires increased pedal pressure
- Uneven Braking: Vehicle pulls to one side during braking
- Contaminated Brake Shoes: Brake fluid soaking into the brake shoes
- Low Brake Fluid Level: Unexplained drop in brake fluid reservoir level
| Brand | Model | Chassis / Series | Engine | Years |
|---|---|---|---|---|
| ISUZU | ELF | NKR8_, NKQ8_ | 4HF1, 4BE1 | 1992 onwards |
| ISUZU | NKR | N-Series | 4HF1, 4BE1 | 1992 onwards |
| ISUZU | NPR | N-Series | 4HF1, 4BE1, 4HG1 | 1992 onwards |
| ISUZU | NQR | N-Series | 4HF1, 4HG1 | 1992 onwards |
| ISUZU | NLR | N-Series | 4HF1 | 1992 onwards |
| Part Number | Description | Position |
|---|---|---|
| 8-97139819-0 / 8971398190 | Front Brake Wheel Cylinder | Left Hand (LH) Rear — This Part |
| 8-97139818-0 / 8971398180 | Front Brake Wheel Cylinder | Right Hand (RH) Rear — Counterpart |
| 8-97022031-0 / 8970220310 | Front Brake Wheel Cylinder | LH (earlier variant) |
| 8-97022030-0 / 8970220300 | Front Brake Wheel Cylinder | RH (earlier variant) |
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify 1-3/16″ (30.2mm) bore diameter and mounting specifications |
| Material Composition | Heavy-duty cast iron analysis to verify structural integrity |
| Bore Surface Test | 100% surface testing to ensure optimum sealing surface |
| Leakage Test | 100% hydraulic pressure test to guarantee zero fluid leakage |
| 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 |
Replacing brake wheel cylinders is a critical safety procedure. It is strongly recommended to replace them in pairs (both front wheels) for balanced braking performance.
Pre-Installation Checklist:
- CRITICAL: This is the Front Left-Hand (LH) Rear cylinder — the RH counterpart is 8-97139818-0 / 8971398180
- Quantity Required: 2 per vehicle (one for each front 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 for balanced braking performance
Maintenance Schedule:
- Inspection: Every 50,000 km / 12 months
- Fluid Replacement: Every 2 years or 40,000 km
- Replacement: Immediately if failure symptoms appear
- Packaging: Neutral box, color box, or customer brand package
- Pack Quantity: 1 PC
- Weight: Approx. 1.16 kg
- Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
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