King Pin Kit KP425 04431-36030 For Toyota Japanese Truck with HRC 55-63 Hardness 45# Steel Material Complete Steering Knuckle Repair Kit

Complete king pin kit (KP425) for Toyota Japanese trucks. Includes king pin, bushings, bearings, seals, and hardware. Restores precise steering control, eliminates wheel play, and ensures safe front axle alignment.

• Complete Kit: All components included for a full king pin rebuild
• OE Quality: Manufactured to Japanese truck dimensional and metallurgical specifications
• High-Strength Material: 45# steel with heat treatment (HRC 55-63) for wear resistance
• Precision Machined: Ground surfaces and accurately sized bushings
• Greaseable Design: Spiral oil grooves for even lubrication
• Eliminates Steering Play: Restores proper end play and steering precision
• Reduces Tire Wear: Prevents uneven tire wear caused by loose king pins
• Direct Replacement: Engineered to match OE dimensions (may require reaming)
• Cost-Effective: Affordable alternative to genuine OEM kits

This king pin kit is designed for Toyota Japanese trucks with conventional solid front axle (I-beam). Common applications include:

• Toyota Dyna (light/medium truck)
• Toyota Toyoace
• Toyota Coaster (bus, front axle)
• Toyota Hino (some models, verify)
• Other Japanese light/medium trucks with similar axle (e.g., Mitsubishi, Isuzu - check dimensions)

1. Safely lift and support front axle; remove wheels, brake components, and steering knuckle
2. Press out old king pins and remove old bushings from axle beam
3. Clean axle bores and inspect for damage
4. Press new bushings into axle beam (upper/lower). Align oil holes
5. Ream bushings to correct clearance (0.001-0.003 inches) if required
6. Lubricate new king pin and bushings with chassis grease
7. Assemble thrust bearing/washer, insert king pin, install lock pins
8. Check end play with dial indicator (≤ 0.005 inches). Adjust with shims if needed
9. Reassemble steering knuckle, seals, caps, and grease fittings
10. Grease thoroughly until fresh grease exits seals
11. Reinstall wheels and brake components; torque to spec
12. Road test and re-torque after 500 km

• Material Verification: 45# steel composition and hardness tested (HRC 55-63)
• Dimensional Inspection: Pin diameter, bushing IDs, overall length, and taper verified
• Hardness Testing: Rockwell hardness confirmed
• Surface Finish: Ground surfaces checked for smoothness (Ra ≤ 0.4 μm)
• Seal Quality: Dust seals and gaskets inspected for fit and integrity
• Kit Completeness: 100% manual count of components
• Packaged Safely: Components wrapped and boxed to prevent damage

• Neutral export packing or customized packaging available
• Carton or wooden case for safe transportation
• Fast delivery for stock items
• Shipping by Express Air or Sea