ISUZU NHR54 4JA1 King Pin Kit KP-232 Φ25 × 168 mm 40Cr Alloy Steel OEM Fit Steering Knuckle Repair Kit
| King Pin Size: | Φ25 × 168 Mm | Net Weight: | 1.98 Kg |
| Hardness: | HRC 55–63 | King Pin Material: | 40Cr Alloy Steel / SAE 1045 |
| Kit Contents: | King Pins ×2, Bushings, Thrust Bearings, Oil Seals, Lock Pins, Grease Fittings, Snap Rings | Position: | Front Axle Left / Right |
| High Light: | Φ25 × 168 mm King Pin Kit,40Cr Alloy Steel Steering Knuckle Repair Kit,OEM Fit KP-232 |
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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.
- King pins ×2
- Bushings
- Thrust bearings
- Oil seals
- Lock pins
- Grease fittings
- Snap rings
| 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 |
- 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
| 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 |
| 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) |
- 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
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