Turbo 400 Transmission Rear Extension Housing No Bearing Included

TH400 Rear Extension Housing – No Bearing Included

The Aeroflow Performance GM rear extension housing is designed to replace the stock housing on a GM TH400 automatic transmission. An extension housing connects the transmission to the tail shaft, transmitting power to the wheels for reliable performance on the street or strip.

Crafted from heavy-duty cast aluminium, this rear extension housing delivers robust support for high-torque applications while keeping weight manageable. Note that bearings are not included with this unit; you’ll source the appropriate bearing separately to complete your installation.

We recommend pairing this with our GM TH400 transmission case (AF72-2230) sold separately for a seamless upgrade or rebuild.

• Direct replacement for a GM TH400 rear extension housing
• Heavy-duty cast aluminium construction for strength and durability
• No bearing included — bearings must be purchased separately
• Designed to connect the transmission to the tail shaft and transfer power to the wheels
• Best paired with GM TH400 transmission case AF72-2230 (sold separately) for complete compatibility