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ISUZU NHR54 4JA1 King Pin Kit 5-87831029-0 KP-232 OEM Fit
Product Overview
King Pin Kit with OEM numbers 5-87831029-0, 5-87832397-0, 5878310290, and 5878323970 — also referenced as KP-232 / MI-09 — is a verified direct-fit replacement for ISUZU NHR54 light trucks equipped with the 4JA1 2.5L diesel engine. This critical steering knuckle component connects the front axle to the steering knuckle, allowing front wheels to pivot for steering while supporting vehicle weight.
Critical Inspection Note: ISUZU service manuals require that the king pin be replaced, never reused, when the knuckle is removed. Always replace king pins, bushings, bearings, and seals as a complete kit.
Technical Specifications
Part Numbers:5-87831029-0, 5-87832397-0
Factory Numbers:5878310290, 5878323970
Model Number:KP-232 / MI-09
King Pin Size:Φ25 × 168 mm
Material:40Cr Alloy Steel / SAE 1045
Hardness:HRC 55–63
Net Weight:1.98 kg
Quality Standard:ISO/TS 16949
Kit Contents
King pins ×2
Bushings
Thrust bearings
Oil seals
Lock pins
Grease fittings
Snap rings
Vehicle Compatibility
Brand
Model
Chassis
Engine
Years
ISUZU
ELF
NHR54
4JA1
1980–1990
ISUZU
ELF
NHR54
4JA1-T
1986–1990
ISUZU
ELF 100
NHR
4JA1
1984–1990
ISUZU
NHR
NHR54
4JA1
1980–1990
ISUZU
Pickup
TFR54
4JA1
1988–2002
ISUZU
KB Pickup
TF
4JA1
1988–2002
Fitment Notes: This king pin kit fits the Φ25×168 mm king pin bore. The KP-232 / MI-09 is NOT interchangeable with the KP-231 / MI-08 (Φ30×188 mm) for larger NKR/NPR platforms.
Failure Symptoms
Steering wander or excessive steering play
Uneven or accelerated front tire wear
Front end shimmy or vibration
Hard steering or binding
Clunking or knocking noise from the front axle
Features & Benefits
Feature
Benefit
40Cr Alloy Steel King Pin
High hardness and tensile strength for reliable steering under heavy loads
Precision-Ground Φ25×168 mm
Exact fit in ISUZU NHR54 steering knuckle - direct drop-in installation
Complete Kit Coverage
All components needed for professional king pin replacement
Grease Fitting Included
Allows regular lubrication to extend service life
ISO/TS 16949 Quality System
Full traceability with material certificates and batch inspection
Product Image
Installation Recommendations
IMPORTANT: King pin replacement is a professional-level steering system repair. Must be performed by qualified technicians in a clean workshop.
Recommended Torque Values
Fastener
Torque
King Pin Lock Pin Lock Nut
18.63–30.41 N·m (13.75–22.43 lb ft)
King Pin Cover Plate Bolts (M8)
25 N·m (20 lb ft)
Steering Arm Retaining Bolts
45 N·m (33 lb ft)
Maintenance Schedule
Every 10,000 km: Grease king pins through fittings, check for steering play
Every 40,000–50,000 km: Inspect king pin bushings for wear
When steering play detected: Inspect king pins immediately
At any steering system repair: Always replace complete kit
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 ...