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ISUZU NKR NPR King Pin Kit 5878316080 5-87831608-0 KP-233 MI-10 OEM Fit SAE 1045 / 40Cr Alloy Steel Φ30 × 188 mm with 12 Months Warranty

Basic Properties
Place of Origin: CHINA
Brand Name: YIMI
Certification: ISO/TS16949
Model Number: NKR NPR
Trading Properties
Minimum Order Quantity: 20 PCS
Price: Negotiable
Payment Terms: T/T
Supply Ability: 10000 pcs/month
Specifications
Model Number: KP-233 / MI-10 Engine Compatibility: 4JB1 / 4HF1 / 4HK1 / 4HE1
Net Weight: 2.986 Kg King Pin Material: SAE 1045 / 40Cr Alloy Steel
King Pin Size: Φ30 × 188 Mm Hardness: HRC 56–60
Kit Contents: King Pins ×2, Bushings, Thrust Bearings, Seals, Lock Pins, Grease Fittings, Snap Rings Vehicle Models: ISUZU NKR / NPR / NQR / NHR / 100P / 600P / 700P
High Light:

SAE 1045 / 40Cr Alloy Steel King Pin Kit

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Φ30 × 188 mm Steering Knuckle Repair Kit

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12 Months Warranty Front Axle King Pin Kit

Product Description
ISUZU NKR NPR King Pin Kit 5878316080 5-87831608-0 KP-233 MI-10 OEM Fit
King Pin Kit 5878316080 5-87831608-0 KP-233 MI-10 for ISUZU NKR NPR NQR 4JB1 4HF1 4HK1 — Verified OEM Fit Φ30*188 mm Front Axle Steering Knuckle Repair Kit
Product Overview
The King Pin Kit with OEM numbers 5878316080 and 5-87831608-0 — also referenced as KP-233 / MI-10 — is a verified direct-fit replacement for ISUZU NKR / NPR / NQR / NHR / 100P / 600P / 700P light and medium-duty trucks. This king pin kit is a critical steering knuckle component that connects the front axle to the steering knuckle, allowing the front wheels to pivot for steering while supporting the vehicle's weight.
Working Principle
The king pin kit serves as the pivot point for the steering knuckle on the front axle. It allows the knuckle to rotate for steering while maintaining precise alignment between the axle beam and the knuckle assembly. The ISUZU NKR/NPR front axle uses a Φ30*188 mm king pin with thrust bearings at the top and bushings at the bottom to support the knuckle.
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
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
Verification Item Data / Standard
Part Number (Short) 5878316080
Part Number (Long) 5-87831608-0
Model Number KP-233 / MI-10
Vehicle Models ISUZU NKR / NPR / NQR / NHR / 100P / 600P / 700P
Engine Compatibility 4JB1 / 4HF1 / 4HK1 / 4HE1
King Pin Size Φ30 * 188 mm
King Pin Material SAE 1045 / 40Cr Alloy Steel
Hardness HRC 56–60
Net Weight (per kit) 2.986 kg
Certification ISO/TS 16949
ISUZU King Pin Kit 5878316080 - Front axle steering component
Vehicle Compatibility
Brand Model Chassis Engine Years
ISUZU ELF NKR 4JB1 / 4HF1 1982–2007
ISUZU ELF NKR55 4JB1 1986–2007
ISUZU NPR NPR 4JB1 / 4HF1 / 4HK1 1986–Present
ISUZU NQR NQR 4HK1 / 4HE1 1996–Present
Important Fitment Notes: This king pin kit fits the Φ30*188 mm king pin bore. Confirm the king pin diameter and length against your original component before ordering. For right-hand drive (RHD) vehicles, verify clearance and orientation.
Features & Benefits
SAE 1045 / 40Cr Alloy Steel King Pin: High hardness (HRC 56–60) and tensile strength for reliable steering pivot under heavy loads.

Precision-Ground Φ30*188 mm: Exact fit in the ISUZU NKR/NPR/NQR steering knuckle — direct drop-in installation without modification.

Complete Kit Coverage: Includes king pins, bushings, thrust bearings, seals, lock pins, grease fittings, and snap rings.

ISO/TS 16949 Quality System: Full traceability with material certificates and batch inspection reports.
Installation Recommendations
IMPORTANT: King pin replacement is a professional-level steering system repair. It must be performed by a qualified technician in a clean workshop. Always replace king pins, bushings, bearings, and seals as a complete kit.
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 the grease fittings. Check for steering play.
  • Every 40,000–50,000 km: Inspect king pin bushings for wear. Check steering knuckle for excessive play.
  • When steering play is detected: Inspect king pins immediately. Replace if wear is beyond specification.