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{"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-grade direct replacement vacuum pump return hose for ISUZU NPR series trucks with 4HF1 and 4HG1-T diesel engines. This critical component returns excess air and oil mist from the vacuum pump back to the crankcase or intake system.
Part Numbers:8-94339073-1, 8943390731, 8-94339073-0, 8943390730
Inner Diameter:7/16" (11mm)
Length:145mm overall, 109mm center span
Material:Unhardened vulcanized rubber
Weight:0.03 kg
Failure Symptoms
Oil leakage from vacuum pump area or along hose path
Brake booster warning light with soft/spongy brakes
Squealing or hissing noises from vacuum pump
Hard brake pedal requiring increased effort
Visible cracks, hardening, or brittleness
Oil residue accumulation on hose surface
A failing vacuum pump return hose can lead to oil loss, loss of brake power assist, and potential engine contamination. Prompt replacement is essential for safe brake operation and engine reliability.
Vehicle Compatibility
Brand
Model
Engine
Years
ISUZU
NPR66
4HF1, 4HG1-T
1999-2006
ISUZU
NPR71
4HF1, 4HG1-T
1998-2002
ISUZU
NQR70
4HF1, 4HG1-T
1999-2004
ISUZU
NQR75
4HF1, 4HG1-T
1998-2004
Verify your vehicle's chassis code, production year, and engine code before ordering. Quantity required: 1 per vehicle.
Features & Benefits
OEM Specification
Guarantees factory-fit quality and performance with verified ISUZU OEM part numbers
Precision Dimensions
7/16" inner diameter and 145mm length ensure correct fitment and proper routing
Durable Construction
Unhardened vulcanized rubber provides exceptional resistance to oil, heat, and vibration
Direct Fitment
No modifications required - engineered as direct match for original hose
100% New
Guarantees zero wear, immediate sealing performance, and full service life
Broad Compatibility
Fits multiple ISUZU NPR models with verified OEM cross-reference data
Quality Control
Dimensional Accuracy
Precision inspection to verify all dimensions match OE blueprint specifications
Material Composition
Unhardened vulcanized rubber analysis for oil resistance and thermal stability
Leakage Testing
100% pressure testing to guarantee zero oil or air leakage
Thermal Testing
500+ hour thermal cycling for long-term reliability under extreme temperatures
Installation & Maintenance
Professional Installation Recommended
Pre-Installation Checklist
Ensure engine is cool before starting work
Clean area around vacuum pump and return hose
Inspect vacuum pump outlet and crankcase return port for damage
Verify new hose dimensions match your original
Use new hose clamps as recommended
Maintenance Schedule
Inspection: Every 50,000 km / 12 months
Replacement: Immediately if failure symptoms appear
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 ...
