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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"}}
Thermostat Hose Pipe 8-97379228-1 8973792281 For ISUZU 700P NPR NQR NRR 4HK1 5.2L Diesel — OEM Verified Direct Fit, Water Bypass Coolant Hose
Product Overview
The Thermostat Hose Pipe with OEM numbers 8-97379228-1 / 8973792281 is a verified direct-fit replacement for ISUZU 700P, NPR, NPR-HD, NQR, and NRR series trucks equipped with the 4HK1 (5.2L) diesel engine. This critical cooling system component routes coolant as a water bypass hose, ensuring proper engine warm-up and preventing hot spots.
Material & Construction: Heavy-duty black rubber designed for excellent heat resistance and durability
Fitment Verification: Confirmed fitment across ISUZU NPR, NPR-HD, NQR, NRR, and 700P models with 4HK1 5.2L engine (2007-2010)
Dimensional Weight: 0.08 kg — lightweight, precision-molded design
OEM Cross-Reference: Replaces 8-97379228-1, 8973792281, 8-97379-228-1, and cross-referenced with 8980969910
Multi-Market Application: Compatible with ISUZU platforms across Middle East, Asia, Africa, South America, North America & Europe
Failure Symptoms — When to Replace
Coolant leaks: Visible drips or puddles under vehicle, low coolant levels
Engine overheating: Temperature gauge rising above normal operating range
Cracked, spongy, or hardened hose: Visual degradation, swelling, or stiffness
Coolant residue or white staining: Dried coolant traces around connections
Loose or brittle hose clamps: Clamps that no longer hold tension
Product Specifications
Part Number:
8-97379228-1 8973792281
Product Name:
Thermostat Hose Pipe
Car Model:
ISUZU 700P NPR NQR NRR
Engine Model:
ISUZU 4HK1
Condition:
100% Brand New
Origin:
China Mainland
Main Market:
Middle East, Asia, Africa, South America, North America & Europe
Vehicle & Engine Compatibility
Brand
Model / Series
Engine
Years
ISUZU
700P
4HK1 / 4HK1-T
2007-2010+
ISUZU
NPR
4HK1
2007-2010
ISUZU
NPR-HD
4HK1
2007-2010
ISUZU
NQR
4HK1
2007-2024
ISUZU
NRR
4HK1
2007-2010
Important Fitment Notes:
Also known as water bypass hose and cylinder block water inlet hose
Specifically designed for 4HK1 platform - verify engine variant before ordering
Always inspect thermostat, water pump, and other radiator hoses when replacing
Verify OEM number against engine tag or vehicle documentation
Features & Benefits
Heavy-duty rubber construction
Withstands high-temperature coolant circulation and pressure pulsation
Precision-molded fitment
Direct replacement with correct bends and end diameters
Heat resistance
Manufactured from black rubber for engine coolant temperatures
Lightweight design (0.08 kg)
Easy installation and reduced stress on connection points
Multi-model compatibility
One hose covers multiple ISUZU platforms
OEM-equivalent form, fit, and function
Direct bolt-on replacement without modification
Quality Control & Verification
QC Item
Verification Method
Inner diameter / outer diameter
Precision gauge measurement against OEM drawing
Hose length / bend geometry
Dimensional inspection
Material hardness
Shore A durometer testing
Burst pressure resistance
Hydrostatic pressure test
Temperature cycling
Thermal cycle testing
Coolant chemical resistance
Immersion test in coolant solution
Surface finish & visual defects
Visual inspection for cracks, blisters, or contamination
Each unit undergoes 100% quality inspection before packaging. Manufacturing conforms to OEM specification standards for cooling system hose applications.
Installation & Maintenance
IMPORTANT SAFETY: Allow engine to cool completely before removing radiator cap or cooling system components. Pressurized hot coolant can cause severe burns. Dispose of used coolant according to local environmental regulations.
Installation Guidelines:
Drain coolant completely using drain pan
Remove old hose by loosening clamps and twisting to break seal
Clean mating surfaces and inspect for corrosion or debris
Install new thermostat bypass hose, ensuring proper routing
Secure clamps to specification without over-tightening
Refill with recommended coolant mixture and bleed system
Pressure test by running engine to operating temperature
Maintenance Schedule:
Inspect thermostat hose every 40,000-50,000 km or annually
Replace immediately if showing cracks, swelling, hardening, or weeping
Replace coolant every 2 years or 50,000 km (conventional coolant)
Inspect all cooling system hoses when replacing one component
Packaging & Supply
Standard packing: Neutral packaging in carton; original packaging available
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 ...