Overview
The Trail Gear 144021-1-KIT is a Rock Assault Trail Nine axle housing, part number 144021-1-KIT. It has a 3 in. x 3/8 in. wall and is universal fit.
Axle housings are sized to a specific axle and mounting layout, so confirm the tube size, wall and mounting pattern with the manufacturer before ordering. Because no vehicle is named, no match is claimed for any truck or Jeep.
Key features
- Rock Assault Trail Nine design, per Trail Gear
- Listed wall size of 3 in. x 3/8 in. Wall
- Fitment field marked universal fit
- Part number carries a KIT designation
Matching a housing to your axle
A housing is only as useful as its fit under the vehicle. Overall width, tube diameter and the spring pad positions decide where the axle sits and how the tire clears the body. Compare these dimensions with your current axle before buying, since a housing that is close in one measure can still bind against the frame or springs.
Gears, bearings and seals are often replaced with the housing, because a new tube can carry old parts unevenly. Plan the carrier, spindle and brake backing plate as one package, and check the bolt pattern on the axle flange. Keep the housing supported on stands while it is positioned so the tube does not shift.
- Overall width and tire clearance
- Tube diameter and wall
- Spring pad and bracket locations
- Axle flange and bolt pattern
Specifications
| Brand | Trail Gear |
|---|---|
| Part number | 144021-1-KIT |
| Product type | Axle housing |
| Product line | Rock Assault Trail Nine |
| Wall size | 3 in. x 3/8 in. Wall |
| Fitment field | Universal fit, per brand |
Vehicle fitment
No vehicle years, makes or models are named for this housing. Trail Gear’s universal fit label does not confirm a vehicle match, and housings are sized to specific axles.
Confirm your vehicle’s year, model and trim before ordering. Compare the housing’s dimensions with your current axle and any gear, spindle and brake parts you plan to use.
Installation notes
The housing must match the axle type and mounting pattern of your vehicle. Check the mounting pattern before starting work, since the housing is sized to a specific axle layout.
What’s included
The housing is the only item included. Hardware, gears and shafts are not included.
Not included: Axle shafts, gears and mounting hardware are not included.
