GM OEM 4L80E / 4L85E 2WD TAIL HOUSING & OUTPUT SHAFT ASSEMBLY
Complete OEM GM 2WD transmission extension housing and output shaft assembly for select 4L80E and 4L85E automatic transmissions.
This is the BOLT-ON / THREADED YOKE configuration and includes both the tail housing and matching output shaft shown in the listing photos.
WHAT YOU RECEIVE:
OEM GM 2WD transmission tail / extension housing
OEM 2WD output shaft
Threaded bolt-on-yoke shaft configuration
Complete matched assembly exactly as pictured
TRANSMISSION APPLICATIONS:
POPULAR VEHICLE APPLICATIONS MAY INCLUDE:
COMPLETE ASSEMBLY ADVANTAGE:
Many listings include only the output shaft or only the extension housing.
This listing includes BOTH major components as shown, giving transmission builders a matched 2WD tail-housing and output-shaft package.
BOLT-ON / THREADED YOKE DESIGN:
This assembly uses the threaded output-shaft configuration designed for a bolt-on yoke.
It should not be confused with the different slip-yoke output-shaft configuration.
Before ordering, compare your original shaft and housing carefully with the listing photos.
OEM QUALITY:
These are original OEM GM transmission hard parts—not generic aftermarket reproductions.
The housing and shaft are cleaned and inspected before shipment.
We check for:
Damaged output splines
Cracks or damage to the extension housing
Excessive wear
Damaged threads
Bushing and seal-area condition
Overall shaft and housing integrity
Normal cosmetic marks, staining or signs of previous use may be present without affecting intended operation.
IMPORTANT FITMENT VERIFICATION:
GM used multiple 2WD output-shaft and extension-housing configurations throughout 4L80E production.
Before ordering, verify:
2WD configuration
Bolt-on yoke vs. slip-yoke design
Threaded output shaft
Output-shaft length
Lube-hole configuration
O-ring / groove casting number
Transmission year and model
Listing photos
Late-style 1997-Up applications commonly use a different shaft/housing configuration than early 1991-1996 units.
Do not purchase based only on the transmission name.
REFERENCE INFORMATION:
A common late 2WD extension-housing casting number may include:
8677464
Only use this casting number when it matches your original housing or confirmed interchange information.
FITMENT HELP:
If you are unsure whether this is correct for your transmission, send tag information
Tail-housing casting number
Output-shaft measurements
Clear photos of your original assembly
We will help verify compatibility before transmission installation is strongly recommended.
Before installation, bushing
Output seal
Driveshaft yoke
Output-shaft splines
Related bearings and bushings
Transmission fluid
Driveshaft condition
Use the proper seal, bushing, lubricant and torque procedures for your exact transmission application.
No programming is required for these components.
LIFETIME WARRANTY INCLUDED
Purchase with confidence. This OEM GM transmission tail-housing and output-shaft assembly is backed by our Lifetime Warranty.
30-DAY RETURNS:
Refunds and exchanges are accepted within 30 days.
The complete assembly must be returned in its original, untampered condition.
Installed, altered, damaged, disassembled or tampered components may be subject to a partial refund.
No returns are accepted after 30 days.
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