| OEM | OEM | Description | Used on |
| 51988-66 | | Plastic plug, seat bar grease fitting hole | 1941 to * --FL, FLH |
| 52-36 | 17025-36 | Complete set of motor gaskets | 1936 to 1950--with iron heads |
| | | Part 52-36 (Complete set of motor gaskets) consists of: | |
| | | 11-36: Cylinder head gasket | |
| | | 1121-21: Inlet pipe gasket | |
| | | 1121-29: Inlet pipe gasket | |
| | | 1269-28: Bowl lock nut gasket | |
| | | 1527-30: Generator gasket | |
| | | 1541-37: Timer base gasket | |
| | | 167-38: Valve guide oil seal | |
| | | 175-29: Valve cover packing | |
| | | 176-26: Valve cover and guide gasket | |
| | | 237-30: Tappet guide gasket | |
| | | 40-08: Spark plug gasket | |
| | | 46-29: Cylinder base gasket | |
| | | 544-37: Relief pipe gasket | |
| | | 589-37: 011 feed pump gasket | |
| | | 590-37: Oil scavenger pump base and cover gasket | |
| | | 598-37A: Gear cover gasket | |
| 52004-24 | | Seat, standard (52006-47B: Seat de luxe) | 1941 to *, FL, FLH |
| 52004-25 | | Standard saddle top | 1925 to 1957 -- all twins |
| 52006-47 | | Deluxe saddle top | Replaced by 52006-47A |
| 52006-47A | | Deluxe saddle top | 1925 to 1957 -- all twins |
| 52006-47B | | Seat, de luxe | 1941 to * --FL, FLH |
| 52008-47A | | Deluxe saddle top | 25 to 57--all twins |
| 52090-25 | | Saddle pommel | 25 to 57--all twins |
| 52092-34 | | Rear saddle stud | (2) 34 to 57--all twins |
| 52096-34 | | Front bolt washer, curved | Solo seats 1931-1980. All models 1931-1980. DL, RL, WL, WLA, WLC, UL, Knucklehead, Panhead, |
| 52098-34 | | Saddle to seat tee mounting kit | Solo seats 1934-1980 |
| 52103-31 | | Rear stud spacer 1/4" | Solo seats 1931-1980. All models 1931-1980. DL, RL, WL, WLA, WLC, UL, Knucklehead, Panhead, |
| 52104-38 | | Solo seat spacer | Solo seats 1938-1980. WL, WLA, WLC, UL, Knucklehead, Panhead. |
| 524-25 | | Rear chain guard stud spring | 1939 to 1950 |
| 52465-65 | | Side clip, seat cover | 1965 to * -- FL, FLH |
| 52466-65 | | Joint clip, seat cover | 1965 to * -- FL, FLH |
| 52467-65A | | Seat cover replacement kit, black | 1965 to * -- FL, FLH |
| 52486-60D | | Buddy seta and handrail, black | 1958 to * -- FL, FLH |
| 52501-29 | 11240-29D | Buddy seat complete - DeLuxe | 1933 to 1952--45" twins |
| 52503-36 | | Buddy seat complete - DeLuxe | 1937 to 1945--61", 74" & 80" twins |
| 52506-65B | | Super deluxe buddy seat, with handrail (white) | 1958 to * --FL, FLH |
| 52507-65C | | Super deluxe buddy seat, with handrail (black) | 1958 to * --FL, FLH |
| 52510-33 | 11240-33A | Set of buddy seat fittings | 1933 to 1952--45" twins |
| 52510-36 | | Set of buddy seat fittings | 1937 to 1954--61", 74" & 80" twins |
| 52511-33 | | Set of buddy seat fittings with footboard extensions | 1933 to 1950 |
| 52515-40 | 13300-40B | Buddy seat top | 1938 to 1954--all twins |
| 52520-64A | | Back rest, buddy seat (white) | 1965 to *--FL, FLH |
| 52526-66 | | Back rest, frame mounted buddy seat | 1966 to * -- FL, FLH |
| 52541-33 | 13304-33 | Front seat bar clamps (2) | RL, WL, WLA, WLC, Servi-car 1933-1952. |
| 52541-59 | | Rear bracket plate | FL, FLH, FLH-80 1958-78. Panhead. Duo Glide. |
| 52543-36 | | Seat bar plate | Big Twins 1936-1964. UL, Knucklehead, Panhead. |
| 52547-33 | 13306-33C | Buddy seat handle | 1933 to 1954--all twins |
| 52550-59 | | Front bracket | FL, FLH 1958-1964. Panhead. Duo Glide. |
| 52550-65 | | Front bracket | 1965 to * -- FL, FLH |
| 52551-36 | | Front bracket, buddy seat | Big Twins 1937-81. UL, Knucklehead, Panhead, |
| 52551-36A | | Front bracket | 1941 to * --FL, FLH |
| 52554-59 | | Rear bracket | FL, FLH, FLH-80 1958-78. Panhead. Duo Glide. |
| 52560-33 | 13344-33 | Set of footboard extensions cpt. | 1933 to 1950 |
| 52560-36 | | Spring yoke and bracket assembly cpt. | 1937 to 1954--61", 74" & 80" twins |
| | | Part 52560-36 (Spring yoke and bracket assembly cpt.) consists of: | |
| | | 510: 1/16" x 1/2" Cotter pin | |
| | | 52567-36: Auxiliary spring yoke | |
| | | 52575-33: Spring, buddy seat | |
| | | 52581-36: Bracket, auxiliary spring support | |
| | | 52592-36: Auxiliary spring yoke frame bracket | |
| | | 52603-36: Auxiliary spring mounting stud with fittings | |
| | | 6320: 5/16" x 11/16" x 1/16" Plain steel washer | |
| | | 7040: 5/16 x 9/16" x 1/16" Lock washer | |
| | | 7045: 3/8" x 5/8" x 1/16" Lock washer | |
| | | 7752: 5/16"-24 N.F. x 17/64" x 1/2" hexagon nut | |
| | | 7793: 3/8"-24 N.F. x 21/64" x 9/16" Hexagon nut | |
| | | 7859: 7/16"-20 N.F. x 3/8" x 3/4" Hexagon nut | |
| 52560-68 | | Spring yoke assembly | 1968 to * -- FL, FLH |
| 52562-33 | 13327-33B | Spring yoke and clamp assembly cpt. | 1933 to 1952--45" solo |
| | | Part 52562-33 (Spring yoke and clamp assembly cpt.) consists of: | |
| | | 2762: 1/4"-24 N.S. x 1/2" Round head screw | |
| | | 4000: 5/16"-24 N.F. x 1" Hexagon head bolt | |
| | | 52548-41: | |
| | | 52565-41: Auxiliary spring yoke | |
| | | 52575-33: Spring, buddy seat | |
| | | 52579-41: Auxiliary spring clamp | |
| | | 52585-41: Yoke hook | |
| | | 52590-41: Auxiliary spring shoulder bolt | |
| | | 7035: 1/4" x 1/2" x 1/16" Lock washer | |
| | | 7040: 5/16 x 9/16" x 1/16" Lock washer | |
| | | 7691: 1/4"-24 N.S. x 5/32" x 7/16" Hexagon nut | |
| | | 7760: 5/16"-24 N.F. x 5/16" x 9/16" Hexagon nut | |
| | | 7859: 7/16"-20 N.F. x 3/8" x 3/4" Hexagon nut | |
| 52565-41 | 13327-41 | Auxiliary spring yoke | WL, WLA, WLC 1941-1952. |
| 52566-65 | | Support rod | 1965 to * --FL, FLH |
| 52567-36 | | Auxiliary spring yoke | 1937 to 1954--61", 74" & 80" twins |
| 52574-77 | | COVER, clutch chain guard - "Eagle Medallion" | 77 to * - FL, FLH, FX |
| 52575-33 | 13322-33 | Spring, buddy seat | Buddy seat 1933-1964. UL, Knucklehead, Panhead, VL, RL, WL. |
| 52575-65 | | Auxiliary spring (2) | 1965 to *--FL, FLH |
| 52577-77 | | COVER, clutch, chain guard - "No 1" (silver) | Late 77 to - FL, FLH, FX |
| 52579-41 | 13331-41 | Auxiliary spring clamp | 1933 to 1952--45" solo |