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Yimi (Guangzhou) Automotive Parts Co, Ltd

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China High-Pressure Injection Pipe 8-97148966-3 8971489663 For ISUZU NPR/NQR/NPR-HD
China High-Pressure Injection Pipe 8-97148966-3 8971489663 For ISUZU NPR/NQR/NPR-HD

  1. China High-Pressure Injection Pipe 8-97148966-3 8971489663 For ISUZU NPR/NQR/NPR-HD
  2. China High-Pressure Injection Pipe 8-97148966-3 8971489663 For ISUZU NPR/NQR/NPR-HD

High-Pressure Injection Pipe 8-97148966-3 8971489663 For ISUZU NPR/NQR/NPR-HD

  1. MOQ: 20 pcs
  2. Price: Negotiable
  3. Get Latest Price
Payment Terms T/T
Part Name PIPE; INJ NO 4 / Injection Pipe No.4
Material High-Speed Steel with Machined Exterior Finish
Vehicle Models ISUZU NPR, NQR, NPR-HD (1998–2004)
Net Weight Approx. 3.0 kg
Delivery Time 5-8 Work Days
Features Protective Blue Caps on Connection Points
Engine Compatibility ISUZU 4HE1 4.8L Diesel
Certifiion ISO/TS16949
Warranty 12 Months
Supply Ability 10000 pcs/month
OEM Part Number 8-97148966-3 / 8971489663
Condition Brand New — 100% quality inspected
Cylinder Position No. 4 Cylinder
Packaging Details Neutral Package or as customers’ request
Model Number ISUZU NPR/NQR/NPR-HD 4HE1 4.8L 1998-2004
Place of Origin China
Brand Name YIMI

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T Part Name PIPE; INJ NO 4 / Injection Pipe No.4
Material High-Speed Steel with Machined Exterior Finish Vehicle Models ISUZU NPR, NQR, NPR-HD (1998–2004)
Net Weight Approx. 3.0 kg Delivery Time 5-8 Work Days
Features Protective Blue Caps on Connection Points Engine Compatibility ISUZU 4HE1 4.8L Diesel
Certifiion ISO/TS16949 Warranty 12 Months
Supply Ability 10000 pcs/month OEM Part Number 8-97148966-3 / 8971489663
Condition Brand New — 100% quality inspected Cylinder Position No. 4 Cylinder
Packaging Details Neutral Package or as customers’ request Model Number ISUZU NPR/NQR/NPR-HD 4HE1 4.8L 1998-2004
Place of Origin China Brand Name YIMI
High Light Isuzu NPR fuel injection pipeOEM high-pressure fuel line4HE1 engine injection pipe
High-Pressure Injection Pipe 8-97148966-3 8971489663 For ISUZU NPR/NQR/NPR-HD 4HE1 4.8L 1998-2004
Product Overview

The Injection Pipe No. 4 (PIPE; INJ NO 4) with OEM numbers 8-97148966-3 (also listed as 8971489663) is a verified direct-fit replacement for the #4 cylinder high-pressure fuel line on ISUZU 4HE1 4.8L diesel engines. This precision-engineered component delivers precisely metered, high-pressure diesel fuel from the injection pump to the #4 injector.

OEM Specification
Precision-engineered to exact OEM length, internal diameter, and cone seat geometry
Proven Durability
High-speed steel construction withstands extreme pressures and temperatures
Precision Fitment
Precisely bent tubing ensures proper fuel delivery routing and leak-free operation
OEM Cross-Reference
Replaces 8971489663, 8-97148966-3, 897148-9663, 8-97148-9663
Failure Symptoms

If your injection pipe is failing, you may experience one or more of the following symptoms:

  • Diesel Fuel Leaks: Visible fuel seepage or wetness near the #4 injector or along the pipe
  • Hard Starting: Extended cranking time before the engine starts
  • Engine Misfire: Rough running or misfiring, especially under load
  • Loss of Engine Power: Significant reduction in acceleration and overall performance
  • Strong Diesel Fuel Odor: Noticeable fuel smell in the engine bay or cabin
  • Visible Damage: Cracks, corrosion, or deformation on the fuel line
⚠️ A cracked or leaking injection pipe under high pressure creates a serious fire hazard and can cause cylinder misfire — prompt replacement is essential for safety and engine performance.
High-Pressure Injection Pipe for ISUZU 4HE1 engine
Vehicle Compatibility
Brand Model Chassis / Series Engine Years
ISUZU NPR N-Series 4HE1 4.8L 1998-2004
ISUZU NQR N-Series 4HE1 4.8L 1998-2004
ISUZU NPR-HD N-Series 4HE1 4.8L 1998-2004
⚠️ Important: This injection pipe is specifically for the #4 cylinder on ISUZU 4HE1 engines. For #1, #2, and #3 cylinder pipes, refer to part numbers 8-97148963-4, 8-97148964-0, and 8-97148965-0 respectively.
Features & Benefits
Feature Benefit
OEM Specification Guarantees factory-fit quality and performance
High-Speed Steel Construction Withstands extreme pressures and temperatures
Precision-Formed Tubing Ensures proper fuel delivery routing and alignment
Machined Exterior Finish Provides precise fit and reliable performance
Protective Blue Caps Prevents contamination during storage and installation
Direct OEM Replacement No modifications required
100% New — No Core Charge Guarantees zero wear and full service life
Quality Control
QC Item Verification Method
Dimensional Accuracy Precision inspection to verify exact OEM specifications
Material Composition High-speed steel analysis for pressure integrity
Cone Seal Integrity 100% inspection of precision-formed cone seals
Pressure Test High-pressure testing for zero leakage
Corrosion Resistance Material verification for fuel and environmental resistance
Final Assembly Inspection 100% visual and dimensional inspection
Installation Guidelines
⚠️ CRITICAL: Professional Installation Highly Recommended. High-pressure injection pipes operate under extreme pressure. ISUZU service manuals explicitly mandate that injection pipes must be replaced with new ones whenever removed — these are single-use components.

Pre-Installation Checklist:

  • Do not reuse old injection pipes — they are single-use components
  • Do not bend or modify injection pipes
  • Depressurize the fuel system before starting work
  • Clean the area around the injector and injection pipe connections

Installation Steps:

  1. Depressurize the fuel system and disconnect the negative battery terminal
  2. Remove the old injection pipe from the #4 injector and injection pump
  3. Clean the connection surfaces thoroughly
  4. Install the new injection pipe with correct orientation — no bending or modification allowed
  5. Torque the pipe connections to manufacturer's specified torque settings
  6. Proper fuel system bleeding is necessary to remove air
  7. Start the engine and inspect for fuel leaks around the connections
Product Specifications
Part Number: 8-97148966-3 8971489663
Product Name: High-Pressure Injection Pipe
Car Model: ISUZU NPR/NQR/NPR-HD
Engine Model: ISUZU 4HE1
Condition: 100% Brand New
Packaging: Neutral Packing Or Make It As Requested
Pack Quantity: 1 PC
Net Weight: 3.0 kg
Warranty: 12 months

Company Details

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,

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 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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  • 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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