Engine
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Engine - Cam (293)
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Engine - Cam Cover (74)
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Engine - Connecting Rod (74)
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Engine - Crank Case (199)
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Engine - Crank Pin (56)
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Engine - Cylinder (150)
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Engine - Cylinder Head (76)
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Engine - Dress Up Kit (84)
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Engine - Engine Mount (143)
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Engine - Flywheel (54)
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Engine - Long Block (6)
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Engine - Oil Pump (223)
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Engine - Pinion Shaft (74)
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Engine - Piston (289)
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Engine - Piston Ring (174)
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Engine - Pushrod (62)
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Engine - Pushrod Cover (80)
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Engine - Rocker Arm (78)
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Engine - Rocker Box (179)
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Engine - Seals, Gaskets & O-Rings (594)
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Engine - Short Block (6)
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Engine - Sprocket Shaft (54)
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Engine - Tappet (136)
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Engine - Tappet Block (67)
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Engine - Valves (388)
Pinion Right Side Case Race Standard - Eastern A-24585-57 - OEM 24585-57 - Ironhead 1957-1976
EasternEastern #: A-24585-57 · OEM #: 24585-57 Machined and ground to factory specifications. Fitment: 1957-1976 XL
Pinion Right Side Case Race.005 - Eastern A-24601-40 - OEM 24601-40
EasternEastern #: A-24601-40 · OEM #: 24601-40, 413-40AC Machined and ground to factory specifications. Fitment: 1940-1954 FL
Idler Gear Stud Kit - V-Twin 10-0197 - Ironhead 1957-1985
V-Twin ManufacturingKit includes cam chest idler gear stud with two bushings and two fiber red washers. Fitment: 1957-1985 XL
S&S Supreme Rod Set - S&S Cycle 34-7210
S&S CycleS&S Cycle #: 34-7210 Supreme rod set. Fitment: 1981-1984 FL 1981-1984 FX
Sifton Hydraulic Tappet Unit - Sifton 11460 - OEM 17920-53
SiftonSifton #: 11460 · OEM #: 17920-53 Inserts are precision machined and designed to meet OEM specifications to ensure that the valve train operates wi...
View full detailsConnecting Rod Assembly - V-Twin 10-0188 - OEM 24281-83 - Evolution 1984-1998
V-Twin ManufacturingOEM #: 24281-83 Assembly includes new rods 2 hole crank pin nuts alloy cages and standard rollers fitted and assembled. Piston pin bushings are ins...
View full detailsSifton Hydraulic Tappet Unit - Sifton 40241 - OEM 17920-53
SiftonSifton #: 40241 · OEM #: 17920-53 Inserts are precision machined and designed to meet OEM specifications to ensure that the valve train operates wi...
View full detailsConnecting Rod Assembly - V-Twin 10-0196 - OEM 24275-80 - Ironhead 1981-1985
V-Twin ManufacturingOEM #: 24275-80 Includes new rods crank pin nuts cages and standard rollers fitted and assembled. Piston pin bushings are installed and honed for s...
View full detailsConnecting Rod Assembly - V-Twin 10-0186 - OEM 24277-37
V-Twin ManufacturingOEM #: 24277-37 Includes new rods crank pin nuts cages and standard roller fitted and assembled. Rod set includes step-crank pin for use in OEM fly...
View full detailsCrank Pin Lock and Nut Kit - Eastern A-23966-78 - OEM 23966-78
EasternEastern #: A-23966-78 · OEM #: 23966-78 Kit includes 2 nuts 2 locks and mount screws. Fitment: 1954-1980 FL 1971-1981 FX
Crank Pin Nut and Lock Kit - Eastern A-23967-79 - OEM 23967-79 - Ironhead 1957-1981
EasternEastern #: A-23967-79 · OEM #: 23967-79 Kit includes 2 nuts 2 locks and mount screws. Fitment: 1957-1981 XL
Connecting Rod Assembly - V-Twin 10-0176 - OEM 24275-57 - Ironhead 1957-1980
V-Twin ManufacturingOEM #: 24275-57 Includes new rods crank pin nuts cages and standard rollers fitted and assembled. Piston pin bushings are installed and honed for s...
View full detailsConnecting Rod Assembly - V-Twin 10-0175 - OEM 24281-80
V-Twin ManufacturingOEM #: 24281-80 Includes new rods crank pin nuts alloy cages and standard rollers fitted and assembled. Piston pin bushings are installed and honed...
View full detailsReplica Polished Tappet Block Set - V-Twin 10-0182 - OEM 18607-57 - Ironhead 1957-1985
V-Twin ManufacturingOEM #: 18607-57 Replica tappet block 4 piece set for 1957-1984 in polished finish. Fitment: 1957-1985 XL
Connecting Rod Roller Bearing Set.0008 - V-Twin 10-0164 - Sportster 1952-1986
V-Twin ManufacturingBearing set.0008 oversize and contains 17 long and 34 short rollers for use with alloy cages. Fitment: 1952-1956 K 1957-1986 XL
Connecting Rod Assembly - V-Twin 10-0174 - OEM 24281-74A
V-Twin ManufacturingOEM #: 24281-74A Includes new rods crank pin nuts alloy cages and standard rollers fitted and assembled. Piston pin bushings are installed and hone...
View full detailsConnecting Rod Assembly - V-Twin 10-0173 - OEM 24281-41A
V-Twin ManufacturingOEM #: 24281-41A Includes new rods crank pin nuts alloy cages and standard rollers fitted and assembled. Piston pin bushings are installed and hone...
View full detailsConnecting Rod Roller Bearing Set.0004 - V-Twin 10-0162 - Sportster 1952-1986
V-Twin ManufacturingSet is.0004 oversize and contains 17 long and 34 short rollers for use with alloy cages. Fitment: 1952-1956 K 1957-1986 XL
Connecting Rod Roller Bearing Set.0008 - V-Twin 10-0156
V-Twin ManufacturingTorrington bearing set is.0008 oversize with 18 long and 36 short rollers. Roller bearing set supplies enough rollers for application only for use ...
View full detailsConnecting Rod Roller Bearing Set Standard - V-Twin 10-0160 - Sportster 1952-1986
V-Twin ManufacturingSet is standard size and contains 17 long and 34 short rollers for use with alloy cages. Fitment: 1952-1956 K 1957-1986 XL
Connecting Rod Roller Bearing Set.0006 - V-Twin 10-0163 - Sportster 1952-1986
V-Twin ManufacturingBearing set.0006 oversize and contains 17 long and 34 short rollers for use with alloy cages. Fitment: 1952-1956 K 1957-1986 XL
Connecting Rod Roller Bearing Set.0004 - V-Twin 10-0154
V-Twin ManufacturingTorrington bearing set is.0004 oversize with 18 long and 36 short rollers. Roller bearing set supplies enough rollers for application only for use ...
View full detailsConnecting Rod Roller Bearing Set.0008 - V-Twin 10-0148 - Shovelhead 1973+
V-Twin ManufacturingTorrington bearing set is.0008 oversize with 17 long and 34 short rollers. Roller bearing set supplies enough rollers for application only for use ...
View full detailsConnecting Rod Roller Bearing Set.0002 - V-Twin 10-0153
V-Twin ManufacturingTorrington bearing set is.0002 oversize with 18 long and 36 short rollers. Roller bearing set supplies enough rollers for application only for use ...
View full detailsMore about Engine
Our Engine catalog covers Harley-Davidson Big Twin and Sportster models, with everything organized below so you can go straight to the part you need. Sourced primarily from Colony, with genuine OEM-spec pieces filling in where it counts.
Everything below is organized by sub-category - Seals, Gaskets & O-Rings, Rocker Box, Cam, Piston, Tools, and Oil Pump - so you can jump straight to what your build needs next.