A404 [78-UP] Automatic Transmission Bushing Extension Housing 413 470 670

A worn extension housing bushing on an A404, A413, or A670 unit does more damage than most techs expect: once the output shaft loses its support at that bore, the rear seal takes the punishment and fluid follows. This is the single extension housing bushing sized for that specific location on these units, covering the 30TH, 413, 470, and 670 families from 1978 forward.

When a automatic transmission comes in with rear seal leaks that keep coming back, the bushing behind it is often the piece that was never replaced. Fitting a new seal over a worn bore is a temporary fix; this bushing restores the bore support that the seal depends on to do its job.

This listing covers one piece and one piece only. There are no seals, no gaskets, no Automatic Transmission Filter, no bands, and no clutch pack components included. If your repair also calls for those parts, they need to be sourced separately. Checking your full parts requirement before ordering will save time on both ends.

The piece ships at 1 lb. At REMCO, individual components like this one are pulled and verified against the order before they leave, the same process used on every kit the shop builds. A packing list confirms what is inside.

Before placing the order, match your unit code to A404, A413, or A670 and confirm the vehicle year is 1978 or later. Unit codes can sometimes vary by application year, so cross-referencing against the transmission identification tag is always the right call before committing to a part.

• Stop output shaft slop at the source: a worn extension housing bushing lets the shaft wobble and destroys the seal behind it, leading to leaks and comebacks.
• This listing is a single bushing only. It does not include seals, gaskets, Automatic Transmission Filters, bands, clutch discs, or steels. Review your parts list before ordering to avoid a return trip.
• The bushing is sized for the extension housing bore on A404, A413, A670, and related 30TH, 413, 470, and 670 units, where finding the right fit for this specific bore matters most.
• Contents: one extension housing bushing, 1 lb shipped. No kit, no extra hardware, just the single piece needed for this specific repair point on these units.
• Before ordering, confirm your unit identification code matches A404, A413, or A670 and that the application year falls within the 1978-and-up range covered here.

What's in the box

• 1 x Bushing, A404 Extension Housing 413 470 670

Compatible vehicles

• Fits Daytona [84-93], Laser [84-86], Neon [95-01], E Class [83-84], Executive Limo [85-86], Executive Sedan [83-84], Lebaron [82-94], New Yorker [83-88], TC (Maserati) [89-91], Voyager [95-99], 2000 GTX [89-90], Aries [81-89].