RTS Performance Transmission Extension Tail Housing - Upgraded For Ford C4/C5/C9/C10

The Ford C4 transmission has long been a staple in performance builds, especially in drag racing, thanks to its lightweight design, simplicity, and broad aftermarket support.

RTS is proud to announce its brand new extension housing with notable improvements across the board where the original Ford unit was lacking. This new extension housing is perfectly suitable as a stock OEM replacement for a tired old original unit that might be cracked or warped, but also a pefect pairing to the all new RTS C4 case that is currently under development.

Features:

  • Low pressure casting for superior strength compared to the factory die cast version
  • Made from high quality A356-T6 heat treated aluminium
  • Increased thickness around the rear seal flange which was prone to cracking
  • Increased bolt flange thickness to reduce warping under stress
  • Larger gasket sealing surface area to match the upcoming RTS case
  • 1/8" NPT tapped breather port, made ready to attach a remote breather or catch can
  • Pre-installed rear bush and seal for your convenience

Designed as a direct OEM replacement or performance upgrade, this housing pairs seamlessly with the soon-to-be-released RTS Ford C4 transmission.