NEW SOUTHWEST SPEED RACING 3" BILLET ALUMINUM FAN SPACER, 2 PATTERNS TO FIT ALMOST ALL CHEVY AND FORD WATER PUMPS Brand New Southwest Speed 3" Billet Aluminum Fan Spacer (SWS Part # 410-508). Spaces fan out 3" Lightweight billet 6061-T6 aluminum construction Anodized black Comes complete with all bolts and washers, as well as a fan hub adapter bushing to allow the spacer to work with both 5/8" and 3/4" shafts