| OEM | OEM | Description | Used on |
| 22217-37 | 256-37C | .005" 0.S. | 1937 to 1948--74" side valves |
| 22217-48 | 255-48C | .005" piston O.S. | 1948 to 1952--74" OHV |
| 22218-37 | 256-37D | Piston complete with rings, .010" 0.S. | 1937 to 1948--74" side valves |
| 22218-48 | 255-48D | .010" piston O.S. | 1948 to 1952--74" OHV |
| 22219-37 | 256-37E | Piston complete with rings, .020" 0.S. | 1937 to 1948--74" side valves |
| 22219-48 | 255-48E | .020" piston O.S. | 1948 to 1952--74" OHV |
| 22220-37 | 256-37F | Piston complete with rings, .030" 0.S. | 1937 to 1948--74" side valves |
| 22220-48 | 255-48F | .030. piston O.S. | 1948 to 1952--74" OHV |
| 22221-37 | 256-37G | Piston complete with rings, .040" 0.S. | 1937 to 1948--74" side valves |
| 22221-48 | 255-48G | .040" piston O.S. | 1948 to 1952--74" OHV |
| 22222-37 | 256-37H | Piston complete with rings, .050" 0.S. | 1937 to 1948--74" side valves |
| 22222-48 | 255-48H | .050" piston O.S. | 1948 to 1952--74" OHV |
| 22223-37 | 256-37JA | .060" O.S. piston | 1937 to 1948-74" side valves |
| 22223-48 | 255-48JA | .060" piston O.S. | 1948 to 1952--74" OHV |
| 22224-37 | 256-KA | Piston complete with rings, .070" 0.S. | 1937 to 1948--74" side valves |
| 22224-48 | 255-48KA | .070" piston O.S. | 1948 to 1952--74" OHV |
| 2225-36 | 33879-36 | Shifter rod end bolt | 1938 to 1950 |
| 22251-29 | 253-29A | Piston with rings & pin | Replaced by 22251-29A |
| 22251-29A | | Piston with rings & pin-Std | 29 to 57-all W & G models |
| 22251-55 | | Piston with rings & pin | Replaced by 22251-29A |
| 22252-29 | 253-29C | .005" O.S. | 1929 to 1952--45" twins, 1953 & 1954--Servi-Cars |
| 22252-29A | | .005" oversize piston | 29 to 57-all W & G models |
| 22253-29 | 253-29D | piston complete with rings, 010" O.S. | 1929 to 1952--45" twins, 1953 & 1954--Servi-Cars |
| 22253-29A | | .010" oversize piston | 29 to 57-all W & G models |
| 22254-29 | 253-29E | piston complete with rings, 020" O.S. | 1929 to 1952--45" twins, 1953 & 1954--Servi-Cars |
| 22254-29A | | .020" piston O.S. | 29 to 57-all W & G models |
| 22255-29 | 235-29F | Piston complete with rings, 030"O.S. | 1929 to 1952--45" twins, 1953 & 1954--Servi-Cars |
| 22255-29A | | .030" oversize piston | 29 to 57-all W & G models |
| 22256-29 | 253-29G | Piston complete with rings, 040"O.S. | 1929 to 1952--45" twins, 1953 & 1954--Servi-Cars |
| 22256-29A | | .040" piston O.S. | 29 to 57-all W & G models |
| 22257-29 | 253-29H | Piston complete with rings, .050" O.S. | 1929 to 1952--45" twins, 1953 & 1954--Servi-Cars |
| 22257-29A | | .050" oversize piston | 29 to 57-all W & G models |
| 22258-29 | 253-29JA | Piston complete with rings, .060" O.S. | 1929 to 1952--45" twins, 1953 & 1954--Servi-Cars |
| 22258-29A | | .060" piston O.S. | 29 to 57-all W & G models |
| 22259-29 | 253-29KA | Piston complete with rings, .070" O.S. | 1929 to 1952--45" twins, 1953 & 1954--Servi-Cars |
| 22259-29A | | .070" O.S. | 29 to 57-all W & G models |
| 2228-31 | | Cross shaft plain washer | 1938 to 1948 |
| 223-38 | 18570-38 | Tappet screw nut | 1940 to 1950 |
| 223-48 | 18570-48 | Tappet screw nut | 1948--OHV |
| 22325-36 | 262-36 | Set of piston rings - Standard | 1936 to 1947--61" OHV, 1937 to 1948--74" side valves |
| | | Part 22325-36 (Set of piston rings - Standard) consists of: | |
| | | 22364-36: 0il control ring - Std. | |
| | | 22425-36: Compression ring - Std. | |
| 22325-48 | 262-48 | Set of piston rings - Standard | 48 to 52-61" OHV |
| | | Part 22325-48 (Set of piston rings - Standard) consists of: | |
| | | 22374-49: Piston oil control ring - Standard (2) | |
| | | 22425-51: Compression ring | |
| 22325-55 | | Piston ring Std. (set) | 55 to 57-74" FLH |
| 22326-48 | 262-48C | Piston rings - .005" | 48 to 52-61" OHV |
| 22327-48 | 262-48D | Piston ring .010" | 48 to 52-61" OHV |
| 22327-55 | | Piston ring set .010" | 55 to 57-74" FLH |
| 22328-48 | 262-48E | Piston ring set .020" | 48 to 52-61" OHV |
| 22328-55 | | Piston ring set .020" | 55 to 57-74" FLH |
| 22329-48 | 262-48F | Piston ring set .030" | 1948 to 1952--61" OHV |
| 22329-55 | | Piston ring set .030" | 55 to 57-74" FLH |
| 22330-48 | 262-48G | Piston ring set .040" | 1948 to 1952--61" OHV |