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Yimi (Guangzhou) Automotive Parts Co, Ltd

  • China,Guangzhou
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China Radiator Outlet Water Hose 1-21437871-1 121437-8711 1214378711 For ISUZU FVZ34
China Radiator Outlet Water Hose 1-21437871-1 121437-8711 1214378711 For ISUZU FVZ34

  1. China Radiator Outlet Water Hose 1-21437871-1 121437-8711 1214378711 For ISUZU FVZ34
  2. China Radiator Outlet Water Hose 1-21437871-1 121437-8711 1214378711 For ISUZU FVZ34

Radiator Outlet Water Hose 1-21437871-1 121437-8711 1214378711 For ISUZU FVZ34

  1. MOQ: 10 pcs
  2. Price: Negotiable
  3. Get Latest Price
Warranty 12 Months
Engine Compatibility ISUZU 6HK1 7.8L Diesel
Delivery Time 5-8 Work Days
Condition Brand New — 100% quality inspected
Payment Terms T/T
Part Name Radiator Outlet Water Hose / Engine Coolant Reservoir Hose / Water Tank Downpipe
Material High-Strength Steel
Vehicle Models ISUZU FVZ34, FVR34
Supply Ability 10000 pcs/month
OEM Part Number 1-21437871-1 / 1214378711 / 121437-8711
Packaging Details Neutral Package or as customers’ request
Certifiion ISO/TS16949
Model Number ISUZU FVZ34 6HK1
Place of Origin China
Brand Name YIMI

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  1. Product Details
  2. Company Details

Product Specification

Warranty 12 Months Engine Compatibility ISUZU 6HK1 7.8L Diesel
Delivery Time 5-8 Work Days Condition Brand New — 100% quality inspected
Payment Terms T/T Part Name Radiator Outlet Water Hose / Engine Coolant Reservoir Hose / Water Tank Downpipe
Material High-Strength Steel Vehicle Models ISUZU FVZ34, FVR34
Supply Ability 10000 pcs/month OEM Part Number 1-21437871-1 / 1214378711 / 121437-8711
Packaging Details Neutral Package or as customers’ request Certifiion ISO/TS16949
Model Number ISUZU FVZ34 6HK1 Place of Origin China
Brand Name YIMI
High Light ISUZU FVZ34 radiator outlet hoseOEM engine coolant reservoir pipe6HK1 7.8L diesel water hose
Radiator Outlet Water Hose 1-21437871-1 121437-8711 1214378711 For ISUZU FVZ34 6HK1 7.8L Diesel — OEM Engine Coolant Reservoir Pipe
Product Description

The Radiator Outlet Water Hose (Engine Coolant Reservoir Hose) with OEM number 1-21437871-1 (also listed as 1214378711, 121437-8711) is a verified direct-fit replacement for ISUZU FVZ34 heavy-duty trucks equipped with the 6HK1 7.8L diesel engine. This critical component ensures reliable connection between the radiator and engine, maintaining consistent coolant flow to prevent overheating and ensure optimal engine performance in demanding commercial transport applications.

Real Shop Test Data
Precision-engineered metal coolant pipe delivers consistent flow and reliable sealing under high pressure
Proven Durability
Constructed from high-strength steel with robust corrosion resistance
Installation Success Rate
99% direct bolt-on fitment with precise OEM tolerances
OEM Cross-Reference Verified
Replaces 1-21437871-1, 1214378711, 121437-8711
Failure Symptoms

If your radiator outlet water hose is failing, you may experience one or more of the following symptoms:

  • Coolant Leakage: Visible coolant dripping or pooling under the vehicle
  • Engine Overheating: Temperature gauge consistently rising above normal
  • Low Coolant Level: Unexplained drop in coolant level
  • Steam from Engine Bay: Steam or vapour rising from radiator area
  • Coolant Odor: Sweet smell of coolant in engine bay or cabin
⚠️ Important: A failing radiator outlet pipe can lead to sudden coolant loss, severe engine overheating, and potentially catastrophic engine damage. Prompt replacement is essential.
Part Number1-21437871-1 121437-8711 1214378711
Product NameRadiator Outlet Water Hose
Car ModelISUZU FVZ34
Engine ModelISUZU 6HK1
Condition100% Brand New
OriginChina Mainland
Main MarketMiddle East, Asia, Africa, South America, North America & Europe
ISUZU Radiator Outlet Water Hose - OEM Metal Coolant Pipe
Vehicle & Engine Compatibility
BrandModelChassis / SeriesEngineNotes
ISUZUFVZ34Heavy-Duty Truck6HK1 7.8L DieselPrimary application
ISUZUFVR34FORWARD 18.06HK1 7.8L DieselCompatible
ISUZUFVRFORWARD Series6HK1-TCCompatible
⚠️ Important: This radiator outlet water hose is designed for ISUZU 6HK1 diesel engines. This is a metal coolant pipe assembly — not a rubber hose. Please verify your vehicle's chassis code, production year, and engine code before ordering.
Features & Benefits
FeatureBenefit + Verification Signal
OEM Specification — ISUZU Genuine EquivalentGuarantees factory-fit quality and performance
High-Strength Steel ConstructionProvides exceptional durability and resistance to heat, pressure, and corrosion
Precision-Engineered DesignEnsures secure, leak-free connection and eliminates thermal instability
Direct Bolt-On FitmentNo modifications required — engineered as direct match for original pipe
Enhances Cooling EfficiencyMaintains optimal engine temperature and prevents overheating
100% New — No Core ChargeGuarantees zero wear and full service life
Quality Control & Verification
QC ItemVerification Method
Dimensional AccuracyPrecision inspection to verify all mounting points match OE specifications
Material CompositionHigh-strength steel analysis with corrosion-resistant verification
Pressure Test100% pressure testing to guarantee zero coolant leakage
Temperature Cycle Test500+ hour thermal cycling for long-term reliability
Corrosion Resistance TestSalt spray and chemical exposure testing
Final Assembly Inspection100% visual and dimensional inspection before packaging
Installation & Maintenance Recommendations
⚠️ IMPORTANT: Professional Installation Recommended
Pre-Installation Checklist
  • Allow the engine to cool completely before starting work
  • Drain the cooling system or position a drain pan
  • Clean the area around pipe connections to prevent contamination
  • Inspect all rubber hoses, clamps, and radiator connection for wear
  • Use new O-rings or seals if required by workshop manual
Installation Guidelines
  1. Ensure engine is completely cool and drain cooling system
  2. Disconnect negative battery terminal
  3. Remove radiator outlet pipe from vehicle
  4. Remove old pipe and clean mounting surfaces thoroughly
  5. CRITICAL: Install new pipe with new seals and gaskets
  6. Torque mounting bolts to manufacturer's specified settings
  7. Reconnect all coolant hoses and connections securely
  8. CRITICAL: Refill cooling system with correct coolant mixture and bleed air
  9. Start engine and allow to reach operating temperature
  10. Check for coolant leaks around pipe connections
  11. Verify cooling system operates correctly
Maintenance Schedule
  • Inspection: Every 50,000 km / 12 months
  • Coolant Replacement: Every 2 years or 40,000 km
  • Replacement: Immediately if failure symptoms appear
Packaging & Supply
  • Packaging: Protective packaging to prevent shipping damage
  • Single Package Volume: 0.012m³
  • MOQ: 1 piece
  • Payment Terms: T/T, Western Union
  • Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller

  • Year Established:

    2005

  • Total Annual:

    8000000-10000000

  • Employee Number:

    100~150

  • Ecer Certification:

    Verified Supplier

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 ...

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Get in touch with us

  • Reach Us
  • Yimi (Guangzhou) Automotive Parts Co, Ltd
  • Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
  • https://www.isuzucarsparts.com/

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