This auction is for (1) BOS Original Ford Box of Fifteen (15) Lock Tab Washers for 1965 1966 FORD MUSTANG 6 Cyl 170 200; 1965 1966 Ford F100-350; 1963 1964 1965 1966 Ford Thunderbird; Ford Genuine Part No 370383-S ~Exhaust Manifold Lock Tab Washers; Qty 15. NOTE: V8’s may require more than 15 washers so please do your research! Thanks for viewing!