Front Right Brake Wheel Cylinder 8-97139820-0 8971398200 8-97022028-1 For ISUZU ELF NKR NPR NQR 4HF1 4BE1 — OEM 1-3/16" (30.16mm) Drum Brake Cylinder With Bleeder
| OEM Part Numbers: | 8-97139820-0 / 8971398200 / 8-97022028-1 / 8970220281 | Part Name: | CYLINDER; WHEEL, FRT BRK / Front Brake Wheel Cylinder |
| Fitting Position: | Front Axle, Right Hand (RH) / Rearward | Bore Diameter: | 1-3/16" (30.16 Mm) |
| Thread Size: | M10 × 1.0 | Material: | High-Grade Metal With Corrosion-Resistant Finish |
| Includes: | Bleeder Screw | Weight: | Approx. 1.089 – 1.15 Kg |
| Engine Compatibility: | ISUZU 4HF1, 4BE1, 4HG1, 4JG2, 4JH1 | Vehicle Compatibility: | ISUZU ELF, NKR, NPR, NQR, NPS |
| Production Years: | 1992–2010 | Condition: | Brand New — 100% Quality Inspected |
| Warranty: | 12 Months | ||
| High Light: | ISUZU ELF brake wheel cylinder,OEM drum brake cylinder 30.16mm,ISUZU NKR brake cylinder with bleeder |
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The Front Brake Wheel Cylinder with OEM numbers 8-97139820-0 (also listed as 8971398200, 8-97022028-1, 8970220281) is a verified OEM-grade direct replacement for a wide range of ISUZU light and medium-duty trucks. This critical component converts hydraulic pressure from the brake master cylinder into mechanical force to provide safe and reliable stopping power.
- OEM Specification — Verified by ISUZU OEM part numbers
- Precision 1-3/16" (30.16mm) Bore — Verified by industry standards
- Proven Durability — Constructed from high-grade metal with corrosion-resistant finish
- Verified OEM Fitment — Confirmed for ISUZU ELF, NKR, NPR, NQR models
- Complete with Bleeder Screw — Easy brake system bleeding during installation
- OEM Cross-Reference Verified — Interchangeable with TRW BWN788, Seiken SW-G351, and NAGAMOCHI WC24073F
If your front brake wheel cylinder is failing, you may experience one or more of these symptoms:
- Brake Fluid Leakage — Visible fluid seeping from front wheels or inside brake drum
- Soft or Spongy Brake Pedal — Pedal feels unusually soft or goes to the floor
- Reduced Braking Performance — Vehicle takes longer to stop
- Uneven Braking — Vehicle pulls to one side during braking
- Contaminated Brake Shoes — Brake fluid soaking into brake shoes
- Low Brake Fluid Level — Unexplained drop in brake fluid reservoir
Primary Applications:
| Brand | Model | Chassis / Series | Engine | Years |
|---|---|---|---|---|
| ISUZU | ELF | NKR8_, NKQ8_ | 4HF1, 4BE1 | 1992-2010 |
| ISUZU | NKR | N-Series | 4HF1, 4BE1 | 1994 onwards |
| ISUZU | NPR | N-Series | 4HF1, 4BE1 | 1994 onwards |
| ISUZU | NQR | N-Series | 4HF1, 4HG1 | 1994 onwards |
| ISUZU | NPS | N-Series | 4HF1 | 1994 onwards |
Cross-Reference Part Numbers:
| Part Number | Description | Position |
|---|---|---|
| 8-97139820-0 / 8971398200 | Front Brake Wheel Cylinder | Right Hand (RH) / Rearward — This Part |
| 8-97139821-0 / 8971398210 | Front Brake Wheel Cylinder | Left Hand (LH) / Rearward — Counterpart |
| 8-97022028-0 / 8970220280 | Front Brake Wheel Cylinder | RH (earlier variant) |
| 8-97022029-0 / 8970220290 | Front Brake Wheel Cylinder | LH (earlier variant) |
Our manufacturing and inspection processes ensure every brake wheel cylinder meets or exceeds ISUZU OEM standards.
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify 1-3/16" (30.16mm) bore diameter and mounting specifications |
| Material Composition | High-grade metal analysis to verify structural integrity and heat dissipation |
| 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 |
| 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 for balanced braking performance.
Pre-Installation Checklist:
- CRITICAL: This is the Front Right-Hand (RH) cylinder — the LH counterpart is 8-97139821-0 / 8971398210
- 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. 1.089 - 1.15 kg
- Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
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