2019 NAPA Reference Guide

A-73 One end closed except for bolt hole. Wing nut is included and secures filter into the housing Height Top or Major O.D. Bottom or Minor O.D. Top or Major I.D. Bottom or Minor I.D. Part Number 12.625 5.562 5.562 0.500 4.437 6451 13.531 4.531 4.531 0.540 3.500 2553 15.500 9.910 9.910 CLOSED 6.380 6686 A-74 Special design filter system for Ford trucks. Part numbers 2500, 2770 and 42774 are complete units consisting of a pleated paper element with plastisol ends and a removable top lid. The lid serves as the housing cover. For service, the lid is re-used with the replacement elements shown. Filters 2500 and 2770 do not have fins. Height Top or Major O.D. Bottom or Minor O.D. Top or Major I.D. Bottom or Minor I.D. Part Number 8.125 12.000 10.218 0.500 4.812 2500 9.250 10.000 10.000 4.875 4.875 2771 9.321 12.060 10.000 0.531 4.906 2770 10.375 8.768 8.768 4.860 4.860 2775 A-75 Heavy duty filter with one end open and gasket attached. The opposite end is closed except for bolt hole. Closed end has a flange on the O.D. with a gasket attached underneath the flange. (6387 has a fin attached.) Height Top or Major O.D. Bottom or Minor O.D. Top or Major I.D. Bottom or Minor I.D. Part Number 10.236 6.220 5.118 0.625 4.016 6445 11.500 6.187 5.000 0.531 2.500 6373 12.062 11.850 11.062 0.660 7.200 6485 13.250 12.500 11.500 .660 6.550 500136 A-75 (Continued) Height Top or Major O.D. Bottom or Minor O.D. Top or Major I.D. Bottom or Minor I.D. Part Number 13.500 9.218 7.390 0.687 4.718 6524 13.500 10.468 8.718 0.875 5.343 6506 14.812 9.718 7.843 0.437 4.062 6546 15.500 9.218 7.390 0.687 4.718 6600 17.375 10.468 8.718 0.875 5.343 6719 18.000 10.500 8.750 0.900 5.375 6749 A-78 One piece of self-contained disposable air filter. Top has bolt holes for mounting directly to the carburetor. Normally requires two per engine for dual carburetors. Bolt pattern varies depending upon application. Pleated paper media. 500137 has no bolt hole on top. Height Top or Major O.D. Bottom or Minor O.D. Top or Major I.D. Bottom or Minor I.D. Part Number 2.02 4.82 4.42 CLOSED 2.5 500137 A-79 Cartridge-type breather filter using pleated paper media and perforated outer body. Both ends open with attached gaskets. Height Top or Major O.D. Bottom or Minor O.D. Top or Major I.D. Bottom or Minor I.D. Part Number 2.375 2.250 2.250 0.830 0.830 2704 A-80 Heavy duty panel filter tapered from end to end. Outlet end has gasket attached. Pleated paper media. Length Width Height Part Number 23.000 20.125 4.312 2780 36.440 14.000 6.200 6921 AIR FILTER DESIGN ILLUSTRATIONS A-73 — A-80 915 T E C H N I C A L D A T A