| 4-37B | +5-37B | NEW, cylinders, 74" side valve, set, 1937-48, U/UL/ULH |
| 4-37C | +5-37C | NEW, cylinders, 80" side valve, set, 1937-48, U/UL/ULH |
| 6-36C | +7-36C | cylinders, stock, 61" knuckle, with pistons |
| 6-41B | +7-41B | cylinders, stock, 74" knuckle, with pistons |
| 0134 | 7839 | nuts, cylinder base, set, 1930-78, BT, chrome |
| 0134 | 7839 | nuts, cylinder base, set, 1930-78, BT, cadmium |
| 0134 | 7839 | nuts, cylinder base, set, 1930-78, BT, park |
| 10-40A | 16661-40 | head, cylinders, set, 74"/80" side valve, BT, aluminum |
| 11-36A | 16769-36 | gasket, cylinder head, set of 2, UL, copper |
| | | bolts, cylinder head, for iron heads, BT side valve, cadmium |
| | | bolts, cylinder head, for aluminum heads, BT side valve, cadmium |
| | | bolts/washers, cylinder head, set, for iron head, BT/servicar |
| | | bolts/washers, cylinder head, set, 1940/1947 knucklehead, cadmium |
| | 16822-39 | washer, thick, cylinder head bolt, set of 18, BT side valve, cadmium |
| 29-30 | 16831-30 | studs, cylinder base, set of 8, BT |
| 50-36 | 17027-36 | gasket cmpt, set, 1937-48, UL side valve |
| 51-36 | 17028-36 | gasket cmpt, engine, set, knuckle |
| 55-38 | 17034-38 | gasket cmpt, engine, top overhaul, knuckle |
| 163-36 | 18071-36 | valve, intake, 1937-47, knuckle |
| 163-37 | 180/72-37 | valve, intake, U/UL |
| 165-37 | 18082-37 | valve, exhaust, U/UL |
| 165-21 | 18081-36 | valve, exhaust, 1936-47, knuckle |
| 166-30 | 18170-30 | guide, valve, VL/UL side valve |
| 166-30 | 18170-30 | guide, valve, +.004" OS., VL/UL |
| 167-36 | | guide, valve, exhaust, 1936-47, knuckle |
| 167-40 | | guide, valve, intake, 1936-47, knuckle |
| 167-36 | | guide, valve, exhaust, +.004" OS., 1936-47, knuckle |
| 167-40 | | guide, valve, intake, +.004" OS., 1936-47, knuckle |
| 168-30B | 18200-30 | spring, valve, set of 4, 1930-48, UL |
| 168-36 | 18203-36 | + 169-36, spring, valve, set of 8, knucklehead |
| 168-36 | | springs, valve, set of 8 + collars/keepers/keys cmpt, 1936-47, knuckle |
| 170-30A | 18221-30 | collar, valve, upper, set of 4, UL |
| 171-30 | 18222-30 | collar, valve, lower, set of 4, VL/UL |
| 171-37 | 18223-37 | spacer, collar, valve, upper, set of 4, UL |
| 173-39A | 18245-39 | * cork seal, upper, set of 4, 1939-up, UL |
| | | NEW, valve covers, VL ans 1937-1938 U models, cad |
| | 18236-39 | valve covers cmpt, 1939-48, UL, chrome |
| | 18236-39 | valve covers cmpt, 1939-48, UL, cadmium |
| 175-39A | 18257-39 | cork seal, middle, set of 4, 1939-up, UL |
| 175-30 | 18261-30 | rubber, valve cover, large, set of 4, VL/early UL |
| 234-39 | 18611-39 | * + 235-39, tappet guide block, set of 4, BT/UL |
| 234-39 | 18611-39 | * tappet block, front, 1939-up, /UL/ULH |
| 235-39 | | * tappetblock rear, 1939- up UL/ULH |
| | | sleeve, cylinder, U/UL/61" knuckle |
| 256-37 | | pistons and rings cmpt, STD, for 74" side valve |
| 256-37D | | pistons and rings cmpt, +.010", for 74" side valve |
| 256-37E | | pistons and rings cmpt, +.020", for 74" side valve |
| 256-37F | | pistons and rings cmpt, +.030", for 74" side valve |
| 256-37G | | pistons and rings cmpt, +.040", for 74" side valve |
| 256-37H | | pistons and rings cmpt, +.050", for 74" side valve |
| 256-37JA | | pistons and rings cmpt, +.060", for 74" side valve |
| 256-37KA | | pistons and rings cmpt, +.070", for 74" side valve |
| 256-30B | | * pistons and rings cmpt, for 80" side valve, 1937-41 VL/U, indicate OS. |
| 256-36 | | pistons and rings cmpt, STD, for 61" knuckle |
| 290-36 | | connecting rod, assembled, 61" knucklehead, 1936-52 |
| | | races, connecting rod, set of 3, 1936-48, BT |
| 290-37 | | connecting rod, assembled, 1937-48, BT/U/UL side valve |
| 294-36A | 294-36A | bushing, piston pin, set of 2, VL (thick) |
| 295-36 | 24334-36 | bushing, piston pin, set of 2, BT |
| | 24335-36 | bushing, piston pin, set of 2, +.005" OS., BT |
| 301-40 | | roller cages, connecting rod, 1936-54, BT, steel |
| 304-40 | +305-40 | rollers cmpt, connecting rod, for steel cage, STD, 1936-54, BT |
| 304-40H | +305-40H | rollers cmpt, connecting rod, for steel cage, +.0006 OS., 1936-54, BT |
| 304-40MA | +305-40MA | rollers cmpt, connecting rod, for steel cage, +.0010 OS., 1936-54, BT |
| | 24385-40B | retainers, alloy + bearing rollers cmpt, for connecting rod, 1936-73, BT |
| 304-15 | +305-15 | rollers cmpt, connecting rod, STD, J/VL |
| 304-15D | +305-15D | rollers cmpt, connecting rod, +.0004 OS., J/VL |
| 304-15MA | +304-15MA | rollers cmpt, connecting rod, +.0010 OS., J/VL |
| 332-40 | | flywheels cmpt, connecting rods/shafts, 1940-48, UL side valve |
| 332-40 | | NEW, set of flywheels U/UL models 37-48 |
| 348-40 | 23962-40 | crank pin, step type, U/UL/knuckle |
| 352-30 | 24001-30 | sprocket shaft, 1930-54, BT |
| 2050-30 | 24003-30 | nut, sprocket shaft, 1930-up, BT |
| 355-30 | | pinion shaft, VL |
| 356-37 | 24006-37 | pinion shaft, 1937-48, UL |
| 356-40a | | oil seal, right bearing, set of 5 |
| 356-40 | +356-37B | seal ring with spring, right bearing, 1940-48, UL |
| 358-17A | | washers, flywheel trust collar, set |
| 366-36 | | nut/lock kit, step crank pin, UL/knuckle |
| 366-41 | | nut/lock kit, for 74" crank pin |
| 372-36 | 23972-36 | washers, flywheel, in connecting rod area, pressed in, set of 2, 1936-52, BT |
| 404-36 | | NEw, skidplate BT models black |
| 413-30 | | bushing, crankcase, right, VL |
| 413-40A | 24599-40 | bushing, crankcase, right, 1940-47, OHV |
| 413-40 | 24595-40 | * bushing, crankcase bearing, right, 1940-48, UL |
| 414-40 | 24690-40 | washer, bearing, right, 1940-54, BT |
| 415-36 | 24646-36 | roller cages, bearing, right, set of 2, + STD rollers, 1936-54, BT |
| 416-40 | 24621-40 | bushing, crankcase, left, 1940-54, BT |
| 417-30 | 24721-30 | *roller cages, bearing, left, set of 2 + STD rollers, 1930-54, BT |
| 421-40 | 24776-40 | * oil retainer, bearing, left |
| 421-40 | 24776-40 | seal/retainer, seal, left colony, for left bushing |
| 422-40 | 24779-40 | washer, bearing, left, 1940-54, BT |
| 358-36 | 24781-36 | washer, spacer, bearing, left, 1936-54, BT |
| 423-40 | 24702-40 | spring ring, bushing, crankcase, left/right, set of 2 |
| 425-40 | 24695-40 | washer, spacer, bearing, right, 1940-54, OHV |
| 437-26etc | | mount set cmpt, motor to frame, 1937-47, UL, cadmium |
| 436-26etc. | | mount set cmpt, motor to frame, 1937-47, UL, park |
| | | mount set cmpt, motor to frame, 1937-47, knuckle |
| | | studs/nuts/bolts, crankcase, set, UL side valve, cadmium |
| | | studs/nuts/bolts, crankcase, set, knuckle, cadmium |
| 480-36 | 26550-38 | switch, oil pressure, as original, knuckle/panhead |
| 587-37 | | oil pump cmpt, used, "flat style" pump, 1937-40 |
| 598-36 | 25225-36C | gasket, crankcase, side cover, knuckle |
| 598-37 | 25227-37 | gasket, crankcase, side cover, UL side valve |
| 604-37 | 241010-37 | pinion gear, 193748, UL |
| 306-26 | 9261 | rollers, right bearing, 100 pack, 1936-54, UL/OHV |
| 306-26D | 9262 | rollers, right bearing, 12 pack, +.0002" OS., UL/OHV |
| 306-26F | 9263 | rollers, right bearing, 12 pack, +.0004" OS., UL/OHV |
| 306-26H | 9264 | rollers, right bearing, 12 pack, +.0006" OS., UL/OHV |
| 306-26KA | 9265 | rollers, right bearing, 12 pack, +.0008" OS., UL/OHV |
| 306-26MA | 9266 | rollers, right bearing, 12 pack, +.0010" OS., UL/OHV |
| 610-37A | 25510-37 | + 612-37A + 611-37A + 613-37A, cam gears, set, UL |
| 614-36 | +604-39 | cam gear + matching pinion gear, 1936-47, knuckle |
| 619-36 | | idler gear, 1930-47, VL/UL side valve |
| 637-36B | 25800-36 | spacer, idle/circuit braker gear, set of 2, OHV |
| 660-37D | 25591-37 | bushing, pinion shaft, UL |
| 661-36A | 25582-36 | bushing, pinion shaft in cover, OHV |
| 689-37A | 25302-37 | drive gear, oil pump, on pinion shaft, 1937-48, UL |
| 2806-37 | 16851-37 | mount, top, motor, 1937-48, UL |
| | | tubing set, flexible, for exhaust, 1 3/4" diameter, BT |
| 1008-37SET | | exhaust pipe, set of 4, 1941-48, UL side valve, black |
| 1008-37SET | | exhaust pipe, set of 3, 1937-40, UL side valve, black |
| 1008-37SET | | exhaust pipe, set of 3, 1941-48, UL side valve, chrome |
| 1004-36SET | | exhaust pipe, set of 4, 1936-47, knuckle, chrome |
| 1004-36SET | | exhaust pipe, set of 4, 1936-47, knuckle, black |
| | | clamps, exhaust pipe, set of 5, 1941-48, UL side valve, black |
| | | clamps, exhaust pipe, set of 5, 1941-48, UL side valve, chrome |
| | | clamps, exhaust pipe, set of 5, knuckle, chrome |
| | | clamps, exhaust pipe, set of 5, knuckle, black |
| | | * clamps, exhaust pipe, set of 5, 1936-40, knuckle, black |
| | | * clamps, exhaust pipe, set of 5, 1937-40, UL, black |
| 1034-41 | | muffler, 1941-48, U/UL/EL/FL, black |
| 1034-41C | | muffler, 1941-48, U/UL/EL/FL, chrome |
| 1034-36 | | muffler, build in Y-pipe, 1937-40 U/1936-40 knuckle |
