Remanufactured constant ratio power steering box for the Mercury Cougar or Ford Mustang equipped with factory power steering. These units are Saginaw 800 Series torsional power steering gear boxes that feature 4 turns lock to lock. In our experiences this box design is very durable and not prone to wear like the early style dry steering boxes. These units are tagged as SPA-S, SPA-U, SPA-AC, SPA-AE..
*NOTE* This unit will work in any 1971-73 Mercury Cougar or Ford Mustang except for those equipped with a 429, which would have used a variable ratio gear box that is tagged as SPA-V, SPA-T, SPA-AD, SPA-AF..
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