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{"title":"ISUZU NPR 4HG1 TURBO CHARGER ASM 8973267520 704136-0003 8972083520","imgUrl":"https:\/\/img.chinax.com\/nimg\/49\/ea\/f9c869f0e686c77a889c17a84b86-200x200-1\/isuzu_npr_4hg1_turbo_charger_asm_8973267520_704136_0003_8972083520.jpg","attrs":{"Model Number":"NPR 4HG1","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"Durable Isuzu Cars Parts FVR32 6HE1 Gasket Cylinder Head 8943963341","imgUrl":"https:\/\/img.chinax.com\/nimg\/52\/e1\/d6ef2b7634d5d277fb6272e10b8b-200x200-1\/durable_isuzu_cars_parts_fvr32_6he1_gasket_cylinder_head_8943963341.jpg","attrs":{"Brand Name":"YIMI","Model Number":"FVR32 6HE1","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS"}}
{"title":"BL0CK ASM CYL NPR 4HG1 4HG1-T 4HF1 8982045330","imgUrl":"https:\/\/img.chinax.com\/nimg\/b5\/65\/486b19b43672c3be4efdee332582-200x200-1\/bl0ck_asm_cyl_npr_4hg1_4hg1_t_4hf1_8982045330.jpg","attrs":{"Model Number":"NPR 4HG1 4HG1T 4HF1","Place of Origin":"China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"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"}}
OEM Verified Direct fit replacement rear brake wheel cylinder for ISUZU NPR, NQR, NRR, and N-Series trucks equipped with 4HK1-T diesel engine (2003-2018). This critical hydraulic component converts pressure from the master cylinder into mechanical force to activate rear drum brakes.
Key Specifications
Bore Diameter: 30.16 mm (1-3/16 in) - precision-honed to OEM specification
Material: Cast iron body with EPDM rubber cups and boots
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 with soft feel
Uneven braking or vehicle pull: Vehicle pulls to one side during braking
Brake fade or overheating drums: Extended stopping distances and hot brake drums
Brake warning light illumination: Dashboard warning with abnormal brake behavior
⚠️ Consequence of Ignoring Symptoms: If left unreplaced, a leaking wheel cylinder can lead to fluid loss, overheated drums, damaged brake components, and complete braking loss on one rear wheel - creating critical safety hazards for loaded commercial vehicles.
Vehicle Compatibility
Brand
Model / Series
Engine
Years
ISUZU
NPR
4HK1-T
2003-2016
ISUZU
NQR
4HK1-T
2003-2016
ISUZU
NRR
4HK1-T
2003-2016
ISUZU
N-Series
4HK1-T
2003-2018
Chevrolet
W-Series
4HK1-T
2003-2017
GMC
W-Series
4HK1-T
2003-2010
Important Fitment Notes: This is a rear left (driver side) wheel cylinder. Replace in axle pairs for balanced braking. Confirm engine variant is 4HK1-T. Some configurations may not include bleeder screw.
Features & Benefits
Precision-honed 30.16 mm bore
Ensures consistent hydraulic pressure and even brake shoe actuation
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
Hardened zinc dichromate bleeder screw
Trivalent coating provides extra protection and durability
100% pressure tested
Each unit individually tested to ensure leak-free performance
OEM-equivalent form, fit, and function
Direct bolt-on replacement without modification required
Quality Control & Verification
QC Item
Verification Method
Bore diameter / roundness
Precision bore gauge inspection (30.16 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)
Packaging & Supply
Standard packing: Individual box with protective packaging
Package contents: 1 × Rear Brake Wheel Cylinder
Set options: Left side only, or left + right pair available
Main markets: Middle East, Asia, Africa, South America, North America & Europe
Related parts available: Rear right wheel cylinder, brake shoes, brake drums, repair kits
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 ...