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Yimi (Guangzhou) Automotive Parts Co, Ltd

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China Water Pump Assembly with Mechanical Seal for Isuzu 4JA1 Diesel Engine Direct
China Water Pump Assembly with Mechanical Seal for Isuzu 4JA1 Diesel Engine Direct

  1. China Water Pump Assembly with Mechanical Seal for Isuzu 4JA1 Diesel Engine Direct
  2. China Water Pump Assembly with Mechanical Seal for Isuzu 4JA1 Diesel Engine Direct

Water Pump Assembly with Mechanical Seal for Isuzu 4JA1 Diesel Engine Direct

  1. MOQ: 10 pcs
  2. Price: Negotiable
  3. Get Latest Price
Material Cast iron / aluminum housing, steel shaft, composite/steel impeller
Delivery Time 5-8 Work Days
Cooling Type Engine coolant circulation
Impeller Type Cast impeller
Certifiion ISO/TS16949
Drive Type Belt-driven
Payment Terms T/T,
Bearing Type Sealed ball bearing
Supply Ability 10000 pcs/month
Housing Material High-strength aluminum alloy
Seal Type Mechanical (ceramic/carbon)
Packaging Details Neutral Package or as customers’ request
Engine Appliion ISUZU 4JA1 (2.5L Diesel)
Model Number ISUZU NHR, NKR, NPR
Brand Name YIMI
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Material Cast iron / aluminum housing, steel shaft, composite/steel impeller Delivery Time 5-8 Work Days
Cooling Type Engine coolant circulation Impeller Type Cast impeller
Certifiion ISO/TS16949 Drive Type Belt-driven
Payment Terms T/T, Bearing Type Sealed ball bearing
Supply Ability 10000 pcs/month Housing Material High-strength aluminum alloy
Seal Type Mechanical (ceramic/carbon) Packaging Details Neutral Package or as customers’ request
Engine Appliion ISUZU 4JA1 (2.5L Diesel) Model Number ISUZU NHR, NKR, NPR
Brand Name YIMI Place of Origin China
High Light Water pump assembly for Isuzu 4JA1 engine ,Mechanical seal water pump Isuzu diesel ,Direct replacement Isuzu truck water pump
Water Pump 8-97123330-1 For Isuzu NHR NPR 4JA1 With Gasket 8971233301

Premium-quality direct replacement water pump assembly designed for Isuzu NHR, NKR, and NPR series light-duty trucks equipped with the 4JA1 diesel engine.

Product Overview

Function: Engine water pump circulates coolant through the engine block, cylinder head, and radiator to maintain optimal operating temperature. Prevents overheating and ensures efficient performance for Isuzu 4JA1 diesel engines.

Part Number 8-97123330-1, 8971233301
Product Name Water Pump Assembly / Engine Water Pump
Car Model ISUZU NHR, NKR, NPR
Engine Model ISUZU 4JA1 (2.5L Diesel)
Condition 100% Brand New
Material High-strength aluminum alloy & precision bearings
Warranty 6 Months
Isuzu Water Pump 8-97123330-1 product image
Features & Advantages
  • OE Quality: Manufactured to Isuzu dimensional and material specifiions for perfect fit and reliable cooling
  • Precision Impeller: Cast impeller designed for maximum coolant flow at all engine speeds
  • Heavy-Duty Bearing: Sealed ball bearing with high-temperature grease for long life under load
  • Mechanical Seal: Ceramic or carbon face seal prevents coolant leakage and resists wear
  • Corrosion-Resistant Housing: Cast iron/aluminum housing treated to resist rust and electrolysis
  • Includes Gasket: Factory-matched gasket for leak-free installation
  • Dynamically Balanced: Ensures smooth, quiet operation without vibration
  • Direct Replacement: Matches OE mounting holes, inlet/outlet positions, and pulley fitment
  • Cost-Effective: Affordable alternative to genuine OEM without compromising reliability
Isuzu Water Pump technical details and installation view
Vehicle & Engine Compatibility

This water pump is specifically designed for Isuzu NHR, NKR, and NPR trucks with 4JA1 engine.

Isuzu Vehicle Models:
  • ISUZU NHR (NHR54, NHR69, etc. with 4JA1)
  • ISUZU NKR (NKR55, NKR57, etc. with 4JA1)
  • ISUZU NPR (select models with 4JA1 - verify)
Engine Specifiion - ISUZU 4JA1:
  • 4-Cylinder, Inline Diesel, OHV
  • Displacement: 2.5L (2499cc)
Installation Notes

Installation steps (overview):

  1. Drain coolant from radiator and engine block
  2. Remove drive belt by loosening tensioner or idler pulley
  3. Remove fan and fan clutch (if applicable) by unbolting from water pump flange
  4. Disconnect hoses, noting positions (inlet, outlet, bypass)
  5. Unbolt old water pump, noting bolt lengths and positions
  6. Clean mating surface on engine block, removing old gasket material without scratching surface
  7. Compare new pump with old unit to check mounting, port loions, and pulley fit
  8. Install new gasket on block (some gaskets have adhesive backing)
  9. Install new water pump and tighten bolts in sequence to specifiion (typically 20-30 Nm)
  10. Reconnect hoses using new hose clamps if needed
  11. Reinstall fan and fan clutch, torquing bolts to specifiion
  12. Reinstall drive belt with correct routing and tension
  13. Refill coolant using recommended type, filling slowly to avoid air pockets
  14. Bleed the cooling system by running engine with heater on high
  15. Check for leaks at pump gasket and hose connections
  16. Test drive while monitoring engine temperature gauge
Quality Control
  • Material Verifiion: Housing material and seal composition tested
  • Dimensional Inspection: Mounting flange, shaft diameter, inlet/outlet sizes verified against OE blueprints
  • Leak Test (Pressure/Vacuum): Each pump tested for seal integrity
  • Bearing Noise Test: Rotated to check for smooth, quiet operation
  • Impeller Balance: Dynamic balance checked to minimize vibration
  • Visual Inspection: 100% checked for casting defects, cracks, or damage
  • Packaged Safely: Pump sealed in plastic bag, boxed with foam protection
Packaging and Delivery
  • Neutral export packing or customized packaging available
  • Carton or wooden case for safe transportation
  • Fast delivery for stock items
  • Shipping by Express Air or Sea
Inquiry

For pricing, availability, or bulk purchase of the Water Pump 8-97123330-1 For Isuzu NHR NPR 4JA1 With Gasket 8971233301 Isuzu Spare Parts, please contact our sales team for a competitive quote and expert technical support.

Company Details

Bronze Gleitlager

,

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 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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