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{"title":"ISUZU 700P 4HG1T 4HK1T TIMING GEAR 8971200050 1005220-P301","imgUrl":"https:\/\/img.chinax.com\/nimg\/71\/24\/55b57067e5737ee6caf41aa4d9e5-200x200-1\/isuzu_700p_4hg1t_4hk1t_timing_gear_8971200050_1005220_p301.jpg","attrs":{"Model Number":"700P 4HG1T 4HK1T","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"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"}}
Thermostat Hose 8-97209949-0 8972099490 For ISUZU NPR NQR 4HF1 4HG1
OEM Verified Direct Fit, Reinforced Rubber Coolant Hose
Product Overview
The Thermostat Hose with OEM numbers 8-97209949-0 / 8972099490 is a verified direct-fit replacement for ISUZU NPR, NQR, NKR, and ELF series trucks equipped with the 4HF1 (4.3L) and 4HG1 (4.6L) diesel engines. This critical cooling system component channels coolant between the thermostat housing, water pump, and engine block to maintain proper operating temperature and prevent overheating.
Material & Construction: Heat-resistant, reinforced rubber designed to withstand high-temperature coolant circulation, pressure pulsation, and vibration
Temperature & Pressure Resistance: Engineered for stable performance in continuous high-temperature operation
Dimensional & Fitment Verification: Direct OEM-equivalent replacement with matching bends, end diameters, and length
OEM Cross-Reference Verified: Primary part number 8-97209949-0 / 8972099490, compatible with 8-97209949-1 / 8972099491
Multi-Platform Application: Compatible with ISUZU NPR, NQR, NKR, ELF, NPR75/NQR75 platforms and Hitachi excavators with ISUZU 4HK1 engines
Failure Symptoms & Replacement Indicators
Coolant leaks: Visible drips or puddles under the vehicle, low coolant levels requiring frequent top-ups
Engine overheating: Temperature gauge rising above normal operating range
Cracked, spongy, or hardened hose: Visual inspection reveals degradation, swelling, or stiffness
Coolant residue or white staining: Dried coolant traces around hose connections
Loose or brittle hose clamps: Clamps that no longer hold tension
Part Number:
8-97209949-0 8972099490
Product Name:
Thermostat Hose
Car Model:
ISUZU NPR NQR
Engine Model:
ISUZU 4HF1 4HG1
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
NPR
4HF1 / 4HG1
1999-2016
ISUZU
NQR
4HF1 / 4HG1
1997-2016
ISUZU
NKR
4HF1 / 4HG1
--
ISUZU
ELF
4HK1
--
ISUZU
NPR75
4HK1
--
ISUZU
NQR75
4HK1
--
Hitachi
Excavators / Bulldozers
4HK1
--
Important Fitment Notes:
This hose is used across multiple ISUZU engine platforms including 4HF1, 4HG1, and 4HK1
Verify hose routing and bends against original component
Always inspect thermostat, water pump, and radiator hoses when replacing
Verify OEM number against engine tag or vehicle documentation before ordering
Pressure-pulsation resistant construction Prevents hose expansion and cracking under pressure cycles
Coolant corrosion resistance Resists chemical degradation from ethylene glycol coolants
Vibration-resistant design Maintains integrity under continuous engine vibration
Direct OEM-equivalent fitment Matches factory bends, end diameters, and length
Multi-platform compatibility One hose covers multiple ISUZU and Hitachi applications
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. Manufactured to meet ISUZU OEM specification standards.
Installation & Maintenance
IMPORTANT: Allow the 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: Place drain pan under radiator, open drain cock, allow coolant to drain completely
Remove old hose: Loosen hose clamps at both ends, twist hose to break seal, remove and inspect connections
Clean mating surfaces: Wipe connection points clean, inspect for cracks or deformation
Install new hose: Position new thermostat hose onto thermostat housing and water pump connections
Secure clamps: Tighten hose clamps to specification without over-tightening
Refill coolant: Refill with manufacturer-recommended coolant mixture, bleed system to remove air
Pressure test: Run engine to operating temperature, check for leaks, verify thermostat operation
Maintenance Schedule:
Inspect thermostat hose every 40,000-50,000 km or annually
Replace immediately if hose shows cracking, swelling, hardening, or coolant weeping
Replace coolant according to manufacturer's interval (typically every 2 years or 50,000 km)
Inspect all cooling system hoses when replacing one hose
Packaging & Supply
Standard packing: Neutral packaging in carton; custom packaging available for bulk orders
Suitable for: Truck repair workshops, fleet maintenance departments, spare parts distributors, and export wholesalers
Related parts available: Complete 4HF1/4HG1 cooling hose set, thermostat, water pump, and radiator cap
B2B Advantage: Stable supply, consistent quality, wholesale pricing available for fleet and distributor quantities.
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 ...
