AD-HB145

Matched to the common GM booster bolt pattern and pushrod style rather than to a vehicle catalogue, and typically used on 1960s–1970s GM cars and light trucks. Supplied as the booster only — no clevis. Compare your original unit's mounting pattern and master-cylinder output pin style against the photos before ordering. This is a specification-defined unit, not a vehicle-catalogued part, so a year-and-model lookup will not confirm it.