OEM Standard Steering Unit Direct Replacement for ISUZU 700P 4HK1 Diesel Engine

Precision-engineered steering unit (power steering gear box) converts steering wheel input into hydraulic force, providing smooth, responsive steering control for ISUZU 700P medium-duty trucks.

• OE Quality: Manufactured to strict ISUZU dimensional and performance specifications for perfect fit and function
• Durable Construction: Robust design withstands high pressures and temperatures for heavy-duty use
• Precise Steering Control: Delivers smooth, responsive steering assistance for improved vehicle handling
• Direct Replacement: Precision-engineered to match factory specifications for easy installation
• Restores Steering Performance: Eliminates excessive steering play, hard steering, and fluid leaks
• Enhances Driver Safety: Proper steering function ensures precise vehicle control and safe operation
• Long Service Life: Engineered to withstand the rigors of heavy-duty commercial operation
• Essential Safety Component: Critical for vehicle control and driver safety

Compatible Truck Models:

• ISUZU 700P – Medium-Duty Trucks
• ISUZU NPR – Medium-Duty Trucks (select models)
• ISUZU NQR – Medium-Duty Trucks (select models)

ISUZU 4HK1 Engine Specifications:

• 4-Cylinder, Inline Diesel
• Displacement: 5.2L (5193cc)
• Turbocharged, Intercooled
• Widely used in 700P and NPR series trucks

1. Raise and secure the vehicle – Safely lift the front of the vehicle and support on jack stands
2. Disconnect battery – Disconnect the negative battery cable before beginning work
3. Drain power steering fluid – Drain the power steering fluid from the system
4. Disconnect fluid lines – Carefully disconnect the pressure and return lines from the steering gear
5. Disconnect the steering column – Remove the steering column coupling from the steering gear input shaft
6. Remove the old steering gear – Unbolt and remove the steering unit from the chassis
7. Inspect steering linkages – Check the pitman arm, drag link, and tie rods for wear or damage
8. Clean mounting area – Clean the chassis mounting surface and surrounding area
9. Prepare the new steering gear – Inspect the new unit and verify it matches the original
10. Install the new steering gear – Position the new unit on the chassis and secure with mounting bolts
11. Torque to specification – Tighten mounting bolts to manufacturer specification
12. Connect the steering column – Reconnect the steering column coupling to the input shaft
13. Reconnect fluid lines – Reconnect the pressure and return lines to the steering gear
14. Refill with power steering fluid – Fill the reservoir with the recommended type of fluid
15. Bleed the steering system – Bleed air from the system by turning the steering wheel lock-to-lock
16. Check for leaks – Start the engine and inspect all connections for fluid leakage
17. Check steering operation – Test the steering for proper feel and response
18. Perform wheel alignment – Professional wheel alignment is recommended after installation
19. Road test – Test drive the vehicle to verify smooth, responsive steering operation

• Material Verification: Confirms construction meets OE strength and durability specifications
• Dimensional Inspection: Mounting points and port threads verified against OEM tolerances
• Leak Testing: Pressure-tested for internal and external fluid leakage
• Performance Testing: Steering assistance and responsiveness verified under simulated operating conditions
• Durability Testing: Cycle-tested to ensure reliable performance over the service life
• Visual Inspection: 100% checked for casting defects, machining flaws, or damage
• Packaged Safely: Protected and securely packaged to prevent damage during transit

• 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