BRAND NEW CLUTCH FORK BOOT THAT FITS GM 3899621 BELLHOUSINGS USED WITH 11" CLUTCHES, AS WELL AS MANY OTHERS. (SWS PART #650-3952). FOR USE WITH MANUAL TRANSMISSIONS ONLY. THIS SOUTHWEST SPEED CLUTCH FORK BOOT IS AN EXACT REPLICA OF THE ORIGINAL GM 3993851. IT FITS THE GM 3899621 BELLHOUSING THAT IS USED ON GM MODELS WITH BIG BLOCK & SMALL BLOCK ENGINES EQUIPPED WITH AN 11" CLUTCH. FEATURES: REPLACES GM # 3993851, 3841738, 14007355, & OTHERS EXACT REPLICA OF THE ORIGINAL WITH CLUTCH FORK SLOT SLIPS INTO THE CLUTCH FORK OPENING IN THE BELLHOUSING MOLDED FROM E.P.D.M RUBBER FOR A SNUG FIT THAT WILL LAST FOR YEARS APPLICATIONS:1961-1980 GM A-BODY, B-BODY, F-BODY, X-BODY (CHEVROLET, BUICK, OLDSMOBILE, PONTIAC, & CADILLAC) WE ALSO HAVE THE GM REPLICA 3899621 BELLHOUSING AS WELL.