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Prothane 4-1138 front sway bar bushings are precision-engineered polyurethane components designed for 1994-2005 1500-3500 2/4WD trucks. Featuring a 34mm (1.338 inch) diameter, these bushings provide enhanced rigidity, superior durability, and quiet operation by retaining super grease, making them a premium upgrade over factory rubber parts.

| ASIN | B00387DX0G |
| Best Sellers Rank | #342,995 in Automotive ( See Top 100 in Automotive ) #42 in Automotive Replacement Shock Bushings #404 in Automotive Replacement Sway Bar Bushings |
| Brand | Prothane |
| Customer Reviews | 4.5 4.5 out of 5 stars (393) |
| Date First Available | February 11, 2010 |
| Exterior | Painted |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8.8 ounces |
| Item model number | 4-1138 |
| Manufacturer | Prothane |
| Manufacturer Part Number | 4-1138 |
| Model | Prothane 4-1138 |
| OEM Part Number | 4-1138 |
| Product Dimensions | 4 x 4.5 x 3 inches |
K**N
Fit my truck
No noise. Great price. Very easy to install. Fit my truck. Great quality.
T**R
Fast shipping
Came fast, fits perfect, reasonable price. What more can I say.
D**R
good replacement set
works good
J**N
Adequate product add long as conditions are perfect.
Not going to lie, I expected excellence due to numerous reviewers making this polyurethane composition seem like a scientific breakthrough formulating a product that would basically last forever "and hold its shape" regardless of how it's squeezed any which way. "Just take it off and it pops right back into its original shape with no wear." Well, it got the "squeeze test" on my end links. I had installed lift cups and upgraded shocks, but gave no thought to installing end links slightly more extended.. so after releasing coil spring compression, it did squeeze them a good bit. Was not driven, just lowered of the jacks. One end link actually snapped at the joint after the jack let the truck back down. This immediately relieved tension on the other side. Mind you, nothing was installed wrong. They were extremely cheap end links, as my truck has now been driving with nothing changed except those being swapped out for cheap auto zone end links of identical size. Anyways.. that was roughly 30 minutes installed and only squished momentarily. While swapping them out, the bushings remained stretched at the hole and the washers left permanent indensions. On top of that, the sway bar shifting to one side as the end link snapped was enough to bore the hole just enough that after a few days of driving (with end links replaced).. it wore shiny spots on each side of each sway bar mount where slight slippage continued, and allowed end links to knock against my coil springs.. leaving numerous dings in the paint. Long story short, I replaced sway bar mounts with Moog and it resolved the issue completely. ENERGY bushings are still on my end links since I had extras for not having 4 wheel drive. They are working fine. I leave a good rating because they are a good product, and more than likely handled the incident better than rubber bushings would have.. I THINK. They are squishier than a dense, more firm rubber.. but theoretically that "give" is exactly what minimizes it's wear. End link bushings DID NOT WEAR.. they just didn't poof back to original shape. Don't expect an indestructible miracle, and you'll be happy with the product. Just don't neglect them under the assumption they'll last forever.. because shape deformation is ultimately the equivalent to "original shape, but worn."
H**C
Perfect Fit For My 2000 Dodge Ram 1500 Laramie SLT 4X4
I installed the sway bar bushing kit on my 2000 Dodge Ram 1500 Laramie SLT 4X4 last night and it was a perfect fit. It took longer to get the daggone nuts-n-bolts off, than it did to put the bushings in. I was having about a 3" play in the steering prior to installing the bushings... still having an issue with the play in the steering wheel, but it's nowhere near as bad as it was with the dry-rotted bushings. To avoid cross-threading, make sure you start your bolts 3-4 turns manually before you apply the ratchet & socket.
E**C
easy install
Easy install, and already have outlived the OEM Mopar ones I put on a few months ago.
T**E
Truck rides good
My old 18 year old truck rides good now with these new parts.
M**I
Great kit...and they look nice too!
Great kit, and an excellent value....Great fit on my model Ram 1500.
Trustpilot
5 days ago
1 month ago