D21 Steering Gear Box Yukon Gear & Axle ZSG8405

Yukon Gear & Axle power steering gear box — D21. This is a build component selected by SPECIFICATION rather than by a single vehicle application: match the frame size, flange, wheel size and A/R to your build. If you are not certain what your build needs, ask a tech before ordering.

What it does

The steering gear box turns the steering wheel's rotation into the swing of the pitman arm, with hydraulic assist from the power steering pump. On a solid-axle truck a worn box is where steering play, highway wander and a vague on-centre feel come from, and bigger tires make every one of them worse. A new box restores tight, predictable steering.

How to choose

• Check the part number against the component you are replacing
• Match the specification listed on this page to your build, not just the vehicle name
• If anything about your setup is non-stock, ask a tech before ordering

Fixes

• play or a dead spot in the steering wheel
• wandering at highway speed
• fluid leaking from the input or sector shaft seal
• steering that feels heavy one way and light the other

What's included

• the steering gear box; pitman arm, brackets and fittings only where listed

Specifications

• Brand: Yukon Gear & Axle
• Part number: ZSG8405
• Shipping weight: 23.4 lb
• Condition: new
• Product type: Steering Gear Box

Cross-reference

Replaces or interchanges with Yukon Gear & Axle ZSG8405. Check the part number stamped on your original before ordering.

Free shipping on orders of $70 or more to the lower 48 states; everything else ships with calculated shipping at the part's real weight. Questions on fitment? Ask a tech before you buy.

Confirmed fitment

Fitment as published by the manufacturer for this part number. If your vehicle is not listed, or you are unsure, ask a tech before ordering — a part returned because it was ordered for the wrong vehicle is subject to a restocking fee.