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Your cart is empty.Model Number 8661368. 4L80E: Extension Housing Bushing- 2.01" OD '91-Up. GM Aftermarket Replacement Bushing.
doctor_D
Reviewed in the United States on February 10, 2025
Genuine GM parts on Amazon. What's not to love?
dantae t.
Reviewed in the United States on July 16, 2023
4L80E has different sizes (2) for it this is old style
Tuan Burah
Reviewed in the United States on September 20, 2022
Used on a Silverado Truck 2WD 4L80E tailshaft housing. Worked.
Customer
Reviewed in the United States on May 23, 2022
I bought this because I was replacing the leaky tailshaft seal (GM: 8681168) in my 4L80E, and one of the YT vids recommended replacing this at the same time. So I ordered one up, as they weren't too expensive. My trans has over 200,000 miles on it, so I figured it wouldn't hurt to replace it.Note: These are for RWD / 2WD trucks ONLY. If you have a 4x4, your tailshaft cover is replaced by a transfer case, and there's a different bushing for that.When you get the tailpiece off, and look at the bushing... if you just see LIGHT wear on the surface (I had 1/3 of the circumference with just the tiniest visible wear)... I'd recommend to just replace the rubber seal and leave this as-is.Here's why... from the factory, these are staked in place via the fluid feed hole. So when you drive the old one out, you WILL gouge the mating surface, and fluid could seep between the bushing and tailpiece, unless you get really fancy about removing it. And the YT guys *don't* warn you of this. There's really no way to drive the staking out from behind the feed hole. So it was really intended as a 'life of product' bushing, IMO. I've also read accounts of rebuilders saying they've had to actually replace very, very few of these over their careers (further testimony to the stoutness of the 4L80E, I suppose).So... after witnessing the gouge I put into the mating surface, I used some JB Weld to build up that area afterward, which worked a treat. Use a Dremel stone to gently grind down any excess.When it comes time to drive the new one in, you'll probably note that it practically falls into place, no bushing driver needed. So... I used some blue Loctite on the mating surface of the bushing, making sure to line up the feed holes and the outer lip surface (the bushing should not extend past the mating surface of the tailpiece, but be either level with or just below the chamfered edge -- check the old one before removing, and you'll note this)I allowed 24hrs for the JB Weld to set before grinding away the excess, and at least an hour for the blue Loctite to set up before reinstalling the tailpiece. End result was good - no further leaks, and no noise, but again -- make sure you actually *need* this before going to the trouble of replacing it.
Joseph Gabriel
Reviewed in the United States on May 3, 2020
Fits my 2004 2WD 4l80e transmission extension tail housing.
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