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Yimi (Guangzhou) Automotive Parts Co, Ltd

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China High-Pressure Injection Pipe 8-97148963-4 8971489634 For ISUZU NPR/NQR 4HE1 4.8L
China High-Pressure Injection Pipe 8-97148963-4 8971489634 For ISUZU NPR/NQR 4HE1 4.8L

  1. China High-Pressure Injection Pipe 8-97148963-4 8971489634 For ISUZU NPR/NQR 4HE1 4.8L
  2. China High-Pressure Injection Pipe 8-97148963-4 8971489634 For ISUZU NPR/NQR 4HE1 4.8L

High-Pressure Injection Pipe 8-97148963-4 8971489634 For ISUZU NPR/NQR 4HE1 4.8L

  1. MOQ: 20 pcs
  2. Price: Negotiable
  3. Get Latest Price
Cylinder Position No. 1 Cylinder
Delivery Time 5-8 Work Days
Operating Pressure 20,000+ PSI
Engine Compatibility ISUZU 4HE1 4.8L Diesel
Payment Terms T/T
Part Name PIPE; INJ NO 1 / Injection Pipe No.1
Material Hardened Seamless Alloy Steel
Vehicle Models ISUZU NPR, NQR, NPR-HD (1998–2004)
Certifiion ISO/TS16949
Supply Ability 10000 pcs/month
OEM Part Number 8-97148963-4 / 8971489634
Packaging Details Neutral Package or as customers’ request
Warranty 12 Months
Condition Brand New — 100% quality inspected
Model Number ISUZU NPR/NQR 4HE1 4.8L 1998-2004
Place of Origin China
Brand Name YIMI

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  1. Product Details
  2. Company Details

Product Specification

Cylinder Position No. 1 Cylinder Delivery Time 5-8 Work Days
Operating Pressure 20,000+ PSI Engine Compatibility ISUZU 4HE1 4.8L Diesel
Payment Terms T/T Part Name PIPE; INJ NO 1 / Injection Pipe No.1
Material Hardened Seamless Alloy Steel Vehicle Models ISUZU NPR, NQR, NPR-HD (1998–2004)
Certifiion ISO/TS16949 Supply Ability 10000 pcs/month
OEM Part Number 8-97148963-4 / 8971489634 Packaging Details Neutral Package or as customers’ request
Warranty 12 Months Condition Brand New — 100% quality inspected
Model Number ISUZU NPR/NQR 4HE1 4.8L 1998-2004 Place of Origin China
Brand Name YIMI
High Light Isuzu NPR high-pressure fuel pipeOEM Isuzu 4HE1 injection line4.8L Isuzu fuel line with warranty
High-Pressure Injection Pipe 8-97148963-4 8971489634 For ISUZU NPR/NQR 4HE1 4.8L 1998-2004
Product Overview

The Injection Pipe No. 1 (PIPE; INJ NO 1) with Genuine ISUZU OEM number 8-97148963-4 (also listed as 8971489634) is a verified direct-fit replacement for the #1 cylinder high-pressure fuel line on ISUZU 4HE1 4.8L diesel engines.

Key Specifications:
  • Real Shop Test Data: Precision-engineered to exact OEM length, internal diameter, and cone seat geometry
  • Proven Durability: Constructed from hardened seamless alloy steel capable of withstanding sustained pressures exceeding 20,000 psi
  • Installation Success Rate: 99% direct bolt-on fitment
  • OEM Cross-Reference Verified: Replaces 8971489634, 8-97148963-4, 897148-9634, 8-97148-9634
ISUZU High-Pressure Injection Pipe 8-97148963-4
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 #1 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
⚠️ Safety Warning: A cracked or leaking injection pipe under 20,000+ psi creates a high-pressure fuel spray hazard, immediate fire risk, and cylinder misfire. Prompt replacement is essential for safety and engine performance.
Vehicle & Engine Compatibility

Primary Applications:

BrandModelChassis / SeriesEngineYears
ISUZUNPRN-Series4HE1 4.8L1998-2004
ISUZUNQRN-Series4HE1 4.8L1998-2004
ISUZUNPR-HDN-Series4HE1 4.8L1998-2004
⚠️ Important Compatibility Notes:
  • This injection pipe is specifically for the #1 cylinder on ISUZU 4HE1 engines
  • For #2, #3, and #4 cylinder pipes, refer to part numbers 8-97148964-3, 8-97148965-3, and 8-97148966-3 respectively
  • Please verify your vehicle's chassis code, production year, and engine code before ordering
Features & Benefits
Genuine ISUZU OEM Specification
Guarantees factory-fit quality and performance
Hardened Seamless Alloy Steel Construction
Withstands sustained pressures exceeding 20,000 psi
Precision-Formed Cone Seals
Creates metal-to-metal gas-tight joint when torqued to specification
Exact OEM Length and Geometry
Ensures proper alignment and consistent fuel pressure delivery
Precision Fuel Delivery
Establishes injection reference for balanced engine combustion
Single-Use Design
Engineered for one-time installation as per ISUZU service manuals
Quality Control & Verification
QC ItemVerification Method
Dimensional AccuracyPrecision inspection to verify exact OEM length, internal diameter, and cone seat geometry
Material CompositionHardened seamless alloy steel analysis to verify 20,000+ psi pressure integrity
Cone Seal Integrity100% inspection of precision-formed cone seals for metal-to-metal gas-tight sealing
Pressure TestHigh-pressure testing to guarantee zero leakage under operating conditions
Corrosion ResistanceMaterial verification to ensure resistance to fuel corrosion and environmental factors
Final Assembly Inspection100% visual and dimensional inspection before packaging
Installation & Maintenance Recommendations
⚠️ 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 — they are precision-shaped for correct fuel delivery timing and sealing
  • Depressurize the fuel system before starting work
  • Clean the area around the injector and injection pipe connections to prevent contamination
  • Inspect the injector and pump connections for damage — replace if necessary

Installation Guidelines (Reference ISUZU workshop manual):

  1. Depressurize the common rail fuel system and disconnect the negative battery terminal
  2. Remove the old injection pipe from the #1 injector and injection pump
  3. Clean the connection surfaces thoroughly
  4. CRITICAL: Install the new injection pipe with correct orientation — no bending or modification allowed
  5. CRITICAL: Torque the pipe connections to manufacturer's specified torque settings to ensure proper cone seal metal-to-metal joint formation
  6. Prime the fuel system and check for leaks
  7. Start the engine and inspect for fuel leaks around the connections
Packaging & Supply
  • Packaging: Each injection pipe is securely packed in protective packaging to prevent shipping damage
  • Delivery Time: 1-3 work days
  • Packaging Type: Cartons
  • Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners

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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