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ISUZU Drag Link 8-87034286-0 8870342860 for NPR 4HG1 — OEM Standard Steering System Component
Product Overview
The ISUZU Drag Link Assembly with OEM numbers 8-87034286-0 / 8870342860 is a precision-engineered replacement designed for ISUZU NPR series trucks, compatible with 4HG1 diesel engines. This component is a core part of the vehicle's steering system — the Straight Pull Rod Assembly — responsible for transmitting motion from the steering pitman arm to the steering knuckle for wheel steering control.
Numbering Note: This product number is 8-87034286-0 / 8870342860. Cross-reference numbers include 8-98006794-0 / 8980067940. Same series also includes 8-87034286-1 / 8870342861. Please verify the specific number based on actual vehicle configuration.
Working Principle
The drag link is a critical force transmission component of the mechanical steering system, installed between the pitman arm and the steering knuckle arm. Its working principle includes:
Force Transmission: When the driver turns the steering wheel, the steering gear converts rotational motion into pitman arm oscillation; the drag link transmits this oscillation to the steering knuckle to steer the wheels.
Joint Connection: The drag link connects to the pitman arm and steering knuckle arm via ball joints at both ends, allowing free rotation at various angles for steering flexibility under different suspension travel conditions.
Impact Bearing: During vehicle operation, the drag link bears impact loads from the road surface and steering resistance — one of the most complex load-bearing components in the steering system.
Failure Symptoms
Inspect immediately if any of these symptoms occur:
Symptom
Probable Cause
Excessive steering play; increased steering wheel free play
Worn drag link ball joints; increased clearance
Vehicle wanders at highway speeds; requires constant steering correction
Loose ball joints causing alignment changes
"Clunking" metallic noise when turning or driving over bumps
Severely worn ball joints or loss of lubriion
Uneven tire wear (excessive inner or outer edge wear)
Worn drag link preventing proper toe-in retention
Visual inspection shows torn dust boot or grease leakage
Verifiable Data: Based on Industry Standards & General Validation
Product Certifiion: Manufactured under ISO/TS16949 automotive quality management system certifiion
Brand Background: Supplied by IZUMI brand with mature production systems
Product Net Weight: 5.0 kg
HS Code: 870894000
Compatible Models: ISUZU NPR, NQR, 700P series
Compatible Engines: ISUZU 4HG1, 4HK1
Condition: Brand New — 100% quality inspected
Warranty: Per supplier policy (typically 6–12 months)
Supply Capacity: 1000 pieces/month
Delivery Time: 5–8 working days
Technical Details
Part Number:
8-87034286-0 8870342860
Car Model:
NPR
Engine Model:
4HG1
Condition:
100% Brand New
Material:
High-strength aluminum alloy & precision bearings
Main Market:
Middle East, Asia, Africa, South America, North America & Europe
Vehicle & Engine Compatibility
Brand
Model Series
Compatible Engine
Notes
ISUZU
NPR
4HG1
Light/medium-duty truck
ISUZU
NQR
4HG1
Medium-duty truck
ISUZU
700P
4HK1
Medium-duty truck
ISUZU
NPR
4HK1
Light/medium-duty truck
Important Fitment Warnings
Number Confirmation: This product number is 8-87034286-0 / 8870342860. Same series includes 8-87034286-1 / 8870342861 and cross-reference 8-98006794-0 / 8980067940. Verify the specific number on the original part before ordering.
Left/Right Side: Same series has 8-87034286-0 and 8-87034286-1 variations. Confirm which side needs replacement.
Installation Torque: Refer to ISUZU factory workshop manual for drag link ball joint lock nut torque specifiions. Wheel alignment is mandatory after installation.
Post-Installation Inspection: Perform a full steering system function check — verify steering wheel free play is within specifiion, with no binding or unusual noise.
Regular Inspection: Check the drag link dust boot for cracks, grease leakage, and abnormal ball joint clearance during each routine service.
Features & Benefits
ISO/TS16949 Quality Management Certified
Internationally recognized automotive industry quality standard — ensures full-process quality control from design to production
IZUMI Brand Professional Supply
Mature production systems and extensive industry experience — provides reliable automotive parts solutions
Precision Ball Joint Design
Ensures precise steering with zero play — enhances driving feel and safety; prevents uneven tire wear
High-Strength Steel Construction
Excellent impact and fatigue resistance — withstands steering loads under various operating conditions
100% Factory Quality Inspection
Every piece undergoes strict quality inspection — ensures zero-defect delivery
IMPORTANT SAFETY NOTICE: The drag link is a critical steering system safety component that directly affects vehicle handling stability and driving safety. Professional installation with specialized tools is strongly recommended. Wheel alignment is mandatory after installation.
Installation Guidelines
Preparation: Confirm installation position and part number (8-87034286-0). Prepare tools: Socket wrench, torque wrench, ball joint separator.
Removing Old Drag Link: Park vehicle on level surface, engage parking brake, and securely support with jack stands. Remove lock nuts and use dedied ball joint separator.
Installing New Drag Link: Clean taper bores thoroughly. Install new drag link ensuring full taper contact. Torque lock nuts to specifiion.
Post-Installation Checks: Perform steering flexibility check, free play check, mandatory wheel alignment, and road test.
Maintenance Schedule
Item
Interval
Notes
Drag link dust boot inspection
Every 10,000 km / each service
Check for cracks, aging, grease leakage
Ball joint clearance check
Every 20,000 km
Check for abnormal looseness or noise
Full steering system inspection
Every 50,000 km
Includes all steering linkage components
Packaging & Supply
Packaging:
Neutral packaging or customized per customer request
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 ...
