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{"title":"NPR 700P 4HK1 TURBO CHARGE 8980000311 8970786400","imgUrl":"https:\/\/img.chinax.com\/nimg\/bf\/e4\/ab2ffd604bc21336062bab1561b6-200x200-1\/npr_700p_4hk1_turbo_charge_8980000311_8970786400.jpg","attrs":{"Model Number":"NPR 700P 4HK1","Place of Origin":"China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"NPR 4BD2 3.9L CYLINDER HEAD 8971030270","imgUrl":"https:\/\/img.chinax.com\/nimg\/c0\/a8\/bc770a27bfb7fb839df3007b51a1-200x200-1\/npr_4bd2_3_9l_cylinder_head_8971030270.jpg","attrs":{"Model Number":"NPR 4BD2","Place of Origin":"China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
The Rear Brake Wheel Cylinder with OEM numbers 8-97358879-0 / 8973588790 is a verified direct-fit replacement for ISUZU NPR, NQR, NRR, and N-Series trucks equipped with the 4HK1-T diesel engine. This critical hydraulic component converts hydraulic pressure from the master cylinder into mechanical force that pushes brake shoes against the drum to slow or stop the vehicle.
Key Specifications
Part Number
8-97358879-0 8973588790
Product Name
Brake Wheel Cylinder
Car Model
ISUZU NPR NQR NRR N-Series
Engine Model
ISUZU 4HK1-T
Bore Diameter
33.34 mm (1-5/16")
Material
Grey Cast Iron
Position
Rear Right (Passenger Side)
Thread Specification
(2) M10 × 1.0 inlet threads
Condition
100% Brand New
Failure Symptoms & Replacement Indicators
Brake fluid leak at wheel: Visible wetness around backing plate or inside brake drum
Spongy or long-travel brake pedal: Pedal sinks further than normal and feels soft
Uneven braking or vehicle pull: Vehicle pulls to one side during braking
Brake fade or overheating drums: Extended stopping distances and hot brake drums
⚠️ Consequence of Ignoring Symptoms: If left unreplaced, a leaking wheel cylinder can lead to fluid loss, overheated drums, damaged brake components, and complete loss of braking on one rear wheel — creating a critical safety hazard for loaded commercial vehicles.
Vehicle Compatibility
Brand
Model / Series
Engine
Years
ISUZU
N-Series
4HK1-T
2004-2016
ISUZU
NPR
4HK1-T
2004-2016
ISUZU
NQR
4HK1-T
2004-2016
ISUZU
NRR
4HK1-T
2004-2016
ISUZU
700P
4HK1-T
2004-2016
Chevrolet
W-Series
4HK1-T
2004-2010
GMC
W-Series
4HK1-T
2004-2010
⚠️ Important Fitment Notes: This is the rear right (passenger side) wheel cylinder. Bleeder screw not included. Always verify against your vehicle's specific configuration before ordering. Industry best practice recommends replacing both left and right wheel cylinders simultaneously.
Features & Benefits
Precision-honed 33.34 mm bore Ensures consistent hydraulic pressure and even brake shoe actuation
Grey cast iron body Provides structural rigidity and heat resistance under sustained braking loads
EPDM rubber cups and boots Superior resistance to heat, corrosion, and brake fluid degradation
100% pressure tested Each unit individually tested before packaging for leak-free performance
OEM-equivalent form, fit, and function Direct bolt-on replacement without modification
DOT 3 / DOT 4 compatible Works with standard brake fluid specifications
Quality Control & Verification
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 (grey 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.
Installation & Maintenance
⚠️ IMPORTANT: Brake system service requires professional expertise. Always refer to the ISUZU NPR/NQR workshop manual for complete specifications. Improper installation can result in brake failure and serious injury.
Installation Guidelines
Safety first: Park on level ground, engage parking brake, and chock front wheels
Remove wheel and drum: Loosen lug nuts, raise vehicle, remove wheel and brake drum
Disconnect hydraulic line: Place drain pan underneath, disconnect brake line and plug to prevent contamination
Remove old cylinder: Unbolt wheel cylinder from backing plate
Clean mounting surface: Remove rust, dirt, and debris from backing plate
Install new cylinder: Position new wheel cylinder and tighten mounting bolts to specification
Reconnect brake line: Connect hydraulic line to inlet port using M10 × 1.0 thread specification
Install shoes and drum: Reinstall brake shoes, adjuster components, and drum
Bleed brake system: Fill master cylinder and bleed system until clear, bubble-free fluid flows
Test brakes: Pump pedal to seat shoes, check for leaks, and road-test at low speed
Maintenance Schedule
Inspect wheel cylinders every 40,000-50,000 km or during any brake service
Replace wheel cylinders in axle pairs to ensure balanced braking performance
Flush brake fluid every 2 years or according to manufacturer interval
Inspect backing plate for brake fluid wetness at every oil change
Packaging & Supply
Standard packing: Individual box with protective packaging
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...