Rear Brake Wheel Cylinder 8-97358878-0 8973588780 For ISUZU NPR NQR NRR N-Series 4HK1-T — OEM Verified Direct Fit, 1-5/16" Bore Cast Iron, Rear Left
| OEM Part Number: | 8-97358878-0 / 8973588780 | Part Name: | Rear Brake Wheel Cylinder (Drum Brake) |
| Engine Compatibility: | ISUZU 4HK1-T (5.2L Turbo Diesel); Also Compatible With 4JJ1 3.0L | Vehicle Models: | ISUZU NPR, NQR, NRR, N-Series (2004–2009, 2016–2018); Chevrolet/GMC W-Series (2004–2010); Chevrolet Low Cab Forward (2016–2017) |
| Position: | Rear Left (Driver Side) | Bore Diameter: | 33.34 Mm (1-5/16 In / 1.313 In) |
| Material: | Cast Iron | Inlet Thread: | 2 × M10 × 1.0 |
| Bleeder Screw: | Not Included (bleeder Screw Cap Also Not Included) | Rubber Components: | EPDM Cups And Boots |
| Brake Fluid Compatibility: | DOT 3 / DOT 4 | Condition: | Brand New — 100% Pressure Tested |
| Warranty: | 12 Months | Weight: | 1.536 Kg (Blue Print Specification) |
| High Light: | ISUZU NPR rear brake wheel cylinder,OEM verified ISUZU N-Series brake cylinder,cast iron rear left wheel cylinder |
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Verified direct-fit replacement rear brake wheel cylinder for ISUZU NPR, NQR, NRR, and N-Series trucks with 4HK1-T diesel engine (2004-2018). This critical hydraulic component converts pressure from the master cylinder into mechanical force to activate rear drum brakes.
- Brake fluid leak at wheel - Visible wetness around backing plate
- Spongy or long-travel brake pedal - Air entering system through failed seal
- Uneven braking or vehicle pull - Imbalanced cylinder force
- Brake fade or overheating drums - Extended stopping distances
- Brake warning light illumination - Dashboard indicator activation
| Brand | Model / Series | Engine | Years |
|---|---|---|---|
| ISUZU | NPR | 4HK1-T | 2004-2016 |
| ISUZU | NQR | 4HK1-T | 2004-2016 |
| ISUZU | NRR | 4HK1-T | 2004-2016 |
| ISUZU | N-Series | 4HK1-T | 2004-2009, 2016-2018 |
| Chevrolet | W-Series | 4HK1-T | 2004-2010 |
| GMC | W-Series | 4HK1-T | 2009-2010 |
| QC Item | Verification Method |
|---|---|
| Bore diameter / roundness | Precision bore gauge inspection (33.34 mm) |
| Piston fitment | Go/no-go gauge verification |
| Housing material | Spectrometer analysis (cast iron composition) |
| Rubber cup integrity | Visual and dimensional inspection (EPDM) |
| Pressure integrity | 100% hydrostatic pressure test |
| Thread specification | Thread gauge inspection (M10 × 1.0) |
Each unit undergoes 100% pressure testing before packaging. Manufacturing conforms to OEM specification standards for hydraulic brake components.
- Inspect wheel cylinders every 40,000-50,000 km or during brake service
- Replace wheel cylinders in axle pairs for balanced braking
- Flush brake fluid every 2 years to prevent seal degradation
- Inspect backing plate for fluid wetness at every oil change
- Standard packing: Individual box with protective packaging
- Package contents: 1 × Rear Brake Wheel Cylinder
- Installation hardware and bleeder screw not included
- Available as left side only or left + right pair
- Suitable for repair shops, fleet maintenance, and distributors
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