Overview
The Rubicon Express RE3784 is a replacement PTMEG upper control arm bushing with two sleeve halves. PTMEG stands for polytetramethylene ether glycol, which Rubicon Express says is the toughest, most durable bushing material available commercially, with an 88A durometer rating. The kit is black.
The bushing fits upper Rubicon Express control arms that have a crimped end ring or have been retrofitted to this bushing style. It also works on control arms with the RE3762 conversion.
Key features
- PTMEG rubber bushing
- 88A durometer rating
- One bushing and two sleeve halves
- Small size bushing for a 10mm bolt
- Easy to install, lubricate and service on the trail
- Lifetime warranty
Replacing an upper control arm bushing
Upper control arm bushings carry the forces between the axle and the frame, so they take a steady load on every trip, both on pavement and on rough trail. As they wear, the arm can shift, the steering can feel loose, and tires can wear unevenly. Replacing a worn bushing early keeps the arm locating the axle correctly and reduces stress on the nearby joints.
Because this is a sleeved design, inspect the sleeve halves and the bushing together. Look for cracks, flattening or any separation between the rubber and the sleeve. Clean the bore and sleeves before installing, and apply lubricant as part of the service so the bushing rotates freely.
- Check the arm for bent or cracked metal before reinstalling the bushing
- Re-check bolt torque after the first few trail runs
- Inspect the other upper arms for similar wear
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | RE3784 |
| UPC | 614901440881 |
| Color | Black |
| Material | PTMEG |
| Durometer | 88A |
| Bolt size | 10mm |
| Contents | One bushing and two sleeve halves |
Vehicle fitment
It is meant for upper Rubicon Express control arms, so confirm the arm you are replacing. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
The bushing is meant for upper control arms with a crimped end ring or with an earlier retrofit, so confirm the arm before fitting. Lubricate the bushing as part of service.
The bushing is black PTMEG and is covered by a lifetime warranty against failure. It is a universal fit for the upper arm style it is designed for.
What’s included
One PTMEG bushing and two sleeve halves.
