Steering Gear Assembly MK382585 with Recirculating Ball and Hydraulic Power Assist for Mitsubishi Fuso 4M50 - Direct OEM Replacement with Cast Iron Housing

The Steering Gear Assembly (Part Number: MK382585, also referenced as 4M50) is a premium-quality, direct replacement steering component designed for Mitsubishi Fuso Canter/FE series and compatible Isuzu trucks equipped with the 4M50 diesel engine.

• OE Quality: Manufactured to Mitsubishi/Isuzu dimensional and material specifiions for perfect fit and reliable steering assist
• Precision Machined: Worm shaft and sector gear with recirculating balls for smooth, low-friction operation
• Integrated Hydraulic Control Valve: Ensures precise boost proportional to steering input
• Leak-Tested: Each unit pressure-checked for oil leakage before shipment
• Durable Construction: Cast iron housing resists corrosion and shock loads
• Restores Steering Precision: Eliminates play, hard steering, and fluid leaks
• Direct Replacement: Matches OE mounting holes and steering linkage
• Cost-Effective: Affordable alternative to genuine OEM steering gears

Mitsubishi Fuso Models (Primary Fitment):

• Mitsubishi Fuso FE85D (2007)
• Mitsubishi Fuso FE180 (2007, 2008, 2010)
• Mitsubishi Fuso FE125 (2008)
• Mitsubishi Fuso Canter (various years)
• Mitsubishi Fuso Fighter (with 4M50 engine)

Engine Compatibility:

• 4M50 (4.9L inline-4 turbo diesel)
• 4M51, S6B3, S6A2, S6A3

Isuzu Models (Compatible):

• ISUZU NHR94
• ISUZU NPR / NKR (select models - verify fitment)

Installation steps (overview for steering gear replacement):

1. Safely lift and support the front of the vehicle
2. Drain power steering fluid or ch spillage
3. Remove the pitman arm from the old steering gear (use a puller)
4. Disconnect the steering column universal joint from the input shaft
5. Disconnect hydraulic lines (pressure and return). Cap lines
6. Remove mounting bolts and remove the old steering gear
7. Compare new gear with old - check input shaft spline, pitman arm taper, mounting holes
8. Transfer the pitman arm (or use a new one). Torque the pitman arm nut to specifiion
9. Install new steering gear, torque mounting bolts to specifiion
10. Reconnect hydraulic lines (use new O-rings/seals). Torque fittings
11. Reconnect steering column universal joint
12. Refill power steering fluid and bleed the system (turn wheels lock-to-lock with engine off, then on)
13. Check for leaks and verify steering operation
14. Perform wheel alignment (toe adjustment) - recommended

• Leak Test: Unit pressurized with hydraulic fluid to check seals
• Operational Test: Steering effort and free play measured on test bench
• Dimensional Inspection: Mounting flange, input shaft spline, and pitman arm taper verified
• Hardness Testing: Worm shaft and sector gear hardness checked
• Visual Inspection: 100% checked for casting defects or damage
• Packaged Safely: Sealed in plastic bag, boxed with foam (new units)

• 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