Lower oil seal for most Hurst Billet Plus & Core shifters. Hurst #2160008. ~44mm outer diameter. Also used by the original Comp Plus base for Camaro T56 only (including factory Hurst). Comp Plus T5 does not use this seal.

This seals the lower part of the stub to the housing to mitigate oil intrusion through the main fulcrum pivot. Complete shifter disassembly is required to change. In the case of Billet Plus & Core shifters using the black Billet Plus diamond insert, it is also helpful to fill in the openings on both sides at the bottom (where the wear clips poke out) with silicone RTV.

Similar but different seals are used by the original Hurst Comp Plus diecast bases for NV1500 & NV3500 and the original Hurst Billet Plus shifters for Ford M5OD. I no longer carry them. Most Blackjack use a smaller version of this seal, not compatible.