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Your Headquarters For Harley Davidson After-market Parts
Your Headquarters For Harley Davidson After-market Parts

classic prodgroup Engine - Bottom End

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  • $72.75 - $72.75
    $72.75
    $88.46
    $88.46 - $88.46
    $88.46

    Scavenger Oil Pump Cover 1942 / 1942 WLA 1938 / 1973 G

    V-TWIN MANUFACTURING
    In stock

    Scavenger oil pump cover features cast iron construction This is the outer cover only without internals does not includee gasket and pin. Order h...

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    $72.75 - $72.75
    $72.75
    $88.46
    $88.46 - $88.46
    $88.46
  • $130.07 - $130.07
    $130.07
    $166.57
    $166.57 - $166.57
    $166.57

    Side Valve Feed Pump Upgrade 1941 / 1951 G 1941 / 1948 U

    V-TWIN MANUFACTURING
    In stock

    Feed pump upgrade for Side Valve models. Includes a rotor 4 scrapers and 4 springs. Includes rotor with quad vanes for added oil pressure! Install...

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    $130.07 - $130.07
    $130.07
    $166.57
    $166.57 - $166.57
    $166.57
  • $27.09 - $27.09
    $27.09
    $30.40
    $30.40 - $30.40
    $30.40

    James Oil Pump Gasket Kit 1937 / 1952 WL 1937 / 1973 G

    V-TWIN MANUFACTURING
    In stock

    James oil pump gasket kit FITMENT 1937 / 1952 WL 1937 / 1973 G ACCESSORY ITEMS16-052941-016841-0151

    $27.09 - $27.09
    $27.09
    $30.40
    $30.40 - $30.40
    $30.40
  • $68.28 - $68.28
    $68.28
    $77.34
    $77.34 - $77.34
    $77.34

    74 /80 Side Valve Engine Gasket Kit 1936 / 1948 UL 74 and 80""

    V-TWIN MANUFACTURING
    In stock

    74 /80 Side Valve engine gasket kit. Includes copper head gasket clyinder base gaskets guide gaskets upper pushrod gaskets middle cork pushrod...

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    $68.28 - $68.28
    $68.28
    $77.34
    $77.34 - $77.34
    $77.34
  • $108.75 - $108.75
    $108.75
    $137.94
    $137.94 - $137.94
    $137.94

    Pinion Shaft Gear 1937 / 1948 UL 74 and 80""

    V-TWIN MANUFACTURING
    In stock

    Pinion shaft gear fits Big Twin side valve models. FITMENT 1937 / 1948 UL 74 and 80""ACCESSORY ITEMS16-052941-016841-0151

    $108.75 - $108.75
    $108.75
    $137.94
    $137.94 - $137.94
    $137.94
  • $37.64 - $37.64
    $37.64
    $45.25
    $45.25 - $45.25
    $45.25

    Side Valve Oil Pressure Switch 1938 / 1952 WL 45"1938 / 1957 G 45"1939 / 1948 UL 74 and 80""

    V-TWIN MANUFACTURING
    In stock

    Side Valve oil pressure switch has a 4-6 pound range. Switch is for use with 45 74 and 80 flathead models. *NOTE: Must use a brass sealing washer ...

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    $37.64 - $37.64
    $37.64
    $45.25
    $45.25 - $45.25
    $45.25
  • Sold out
    $318.24 - $318.24
    $318.24
    $385.73
    $385.73 - $385.73
    $385.73

    Side Valve Oil Feed Pump Assembly Parkerized

    V-TWIN MANUFACTURING
    Out of stock

    2022 New Production oil feed pump assembly is for W G and U side valve models. Assembly features a parkerized finish. FITMENT1937 / 1973 G 1937...

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    $318.24 - $318.24
    $318.24
    $385.73
    $385.73 - $385.73
    $385.73
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  • $27.95 - $27.95
    $27.95
    $39.42
    $39.42 - $39.42
    $39.42

    Rear Fender Rail Screw and Nut Kit

    V-TWIN MANUFACTURING
    In stock

    Rear fender rail screw and nut kit includes 7680W acorn nuts zinc plated bolts washers spacers and nuts. Not for use on FXWG models. FITMENT1972...

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    $27.95 - $27.95
    $27.95
    $39.42
    $39.42 - $39.42
    $39.42
  • $43.53 - $43.53
    $43.53
    $46.54
    $46.54 - $46.54
    $46.54

    Engine Case Bolt Kit

    V-TWIN MANUFACTURING
    In stock

    Cadmium finished engine case bolt kit for Side Valve models. FITMENT1937 / 1940 W 1937 / 1940 G ACCESSORY ITEMS8619-1741-01682788-1641-0151

    $43.53 - $43.53
    $43.53
    $46.54
    $46.54 - $46.54
    $46.54
  • $61.57 - $61.57
    $61.57
    $71.81
    $71.81 - $71.81
    $71.81

    Engine Case Bolt Kit

    V-TWIN MANUFACTURING
    In stock

    Parkerized and cadmium finished engine case bolt kit for Side Valve models. FITMENT1929 / 1931 W 1929 / 1931 G ACCESSORY ITEMS8619-1741-01683103...

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    $61.57 - $61.57
    $61.57
    $71.81
    $71.81 - $71.81
    $71.81
  • Save 64% Save %
    $83.95
    $83.95 - $83.95
    $83.95
    $30.47
    $30.47 - $30.47
    $30.47

    Scavenger Pump and Breather Valve Drive Gear

    V-TWIN MANUFACTURING
    In stock

    Scavenger pump and breather valve drive gear for pinion shaft. 6 spline drive gear is used to drive the scavenger pump and breather valve on 74 inc...

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    $83.95
    $83.95 - $83.95
    $83.95
    $30.47
    $30.47 - $30.47
    $30.47
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  • Sold out
    $93.75 - $93.75
    $93.75
    $118.75
    $118.75 - $118.75
    $118.75

    Scavenger Oil Pump Gear

    V-TWIN MANUFACTURING
    Out of stock

    Side Valve scavenger oil pump gear features a double evacuation window for more scaveging action. FITMENT1937 / 1952 UL 1937 / 1973 G ACCESSORY...

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    $93.75 - $93.75
    $93.75
    $118.75
    $118.75 - $118.75
    $118.75
    Sold out
  • Sold out
    $53.44 - $53.44
    $53.44
    $53.44 - $53.44
    $53.44

    Scavenger Pump and Breather Valve Drive Gear

    V-TWIN MANUFACTURING
    Out of stock

    2022 New Production scavenger pump and breather valve drive gear for pinion shaft. 4 spline drive gear is used to drive the scavenger pump and brea...

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    $53.44 - $53.44
    $53.44
    $53.44 - $53.44
    $53.44
    Sold out
  • $45.43 - $45.43
    $45.43
    $59.42
    $59.42 - $59.42
    $59.42

    Scavenger Pump and Breather Valve Drive Gear

    V-TWIN MANUFACTURING
    In stock

    Scavenger pump and breather valve drive gear for pinion shaft. 4 spline drive gear is used to drive the scavenger pump and breather valve on 45 inc...

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    $45.43 - $45.43
    $45.43
    $59.42
    $59.42 - $59.42
    $59.42
  • $1,068.98 - $1,068.98
    $1,068.98
    $1,278.40
    $1,278.40 - $1,278.40
    $1,278.40

    45 inch WLD Flywheel Assembly

    V-TWIN MANUFACTURING
    Low stock

    Shipped assembled and trued with shafts included. Includes Truett and Osborn flywheels with an XL crank pin and rods installed.FITMENT0 / Custom ...

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    $1,068.98 - $1,068.98
    $1,068.98
    $1,278.40
    $1,278.40 - $1,278.40
    $1,278.40
  • Sold out
    $773.74 - $773.74
    $773.74
    $858.95
    $858.95 - $858.95
    $858.95

    Truett & Osborne Flywheel Set

    V-TWIN MANUFACTURING
    Out of stock

    Bare flywheels for Side Valve models feature original weight right and left sides. Tapers accept OE crank pin.FITMENT1941 / 1952 WL 1941 / 1973 G ...

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    $773.74 - $773.74
    $773.74
    $858.95
    $858.95 - $858.95
    $858.95
    Sold out
  • $416.88 - $416.88
    $416.88
    $498.96
    $498.96 - $498.96
    $498.96

    Sifton WR/KR Cam Lobe Set

    V-TWIN MANUFACTURING
    In stock

    Sifton WR/KR camshaft lobe set includes four lobes. Features KR lobe profile that fits inchW + G inch 45 inch motor. Also works in WR but requires...

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    $416.88 - $416.88
    $416.88
    $498.96
    $498.96 - $498.96
    $498.96
  • Sold out
    $45.43 - $45.43
    $45.43
    $59.42
    $59.42 - $59.42
    $59.42

    45 inch Right Case Race

    V-TWIN MANUFACTURING
    Out of stock

    45 inch right case race. *NOTE: Must be honed to fit after installation.FITMENT1937 / 1952 WL 1937 / 1973 G ACCESSORY ITEMS10-021810-0255TECH NOT...

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    $45.43 - $45.43
    $45.43
    $59.42
    $59.42 - $59.42
    $59.42
    Sold out
  • $460.34 - $460.34
    $460.34
    $492.09
    $492.09 - $492.09
    $492.09

    45 Complete Rod Set

    V-TWIN MANUFACTURING
    In stock

    2022 New Production 45 complete rod set for side valve models. FITMENT1929 / 1931 DL 1932 / 1936 WL 1937 / 1952 WL 1932 / 1973 G ACCESSORY ITE...

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    $460.34 - $460.34
    $460.34
    $492.09
    $492.09 - $492.09
    $492.09
  • $128.47 - $128.47
    $128.47
    $164.33
    $164.33 - $164.33
    $164.33

    XR/WR Magneto Idler Gear with Holes

    V-TWIN MANUFACTURING
    In stock

    XR/WR magneto 36 tooth idler gear with holes includes bearing for Side Valve models. *NOTE: Includes 1 bearing but 2 are required. Order additiona...

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    $128.47 - $128.47
    $128.47
    $164.33
    $164.33 - $164.33
    $164.33
  • $51.40 - $51.40
    $51.40
    $67.07
    $67.07 - $67.07
    $67.07

    2-Hole Sifton Crank Pin

    V-TWIN MANUFACTURING
    In stock

    Sifton 2-hole crank pin is made of 8620 steel with a heat treatment depth of .062 inch. You must align oil feed in flywheels with crank pin. OEM us...

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    $51.40 - $51.40
    $51.40
    $67.07
    $67.07 - $67.07
    $67.07
  • $460.45 - $460.45
    $460.45
    $551.25
    $551.25 - $551.25
    $551.25

    Sifton 45 Flywheel Set

    V-TWIN MANUFACTURING
    In stock

    Sifton right and left flywheel set aceepts an OEM pin and is for Side Valve models. FITMENT1941 / 1952 W 1941 / 1973 G ACCESSORY ITEMS10-103510...

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    $460.45 - $460.45
    $460.45
    $551.25
    $551.25 - $551.25
    $551.25
  • Sold out
    $597.39 - $597.39
    $597.39
    $698.47
    $698.47 - $698.47
    $698.47

    Sifton 45 Flywheel Assembly

    V-TWIN MANUFACTURING
    Out of stock

    Sifton 45 flywheel assembly is fully assembled and includes Sifton cast flywheel set with pin crank rods bushing and rollers with shafts. FITMEN...

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    $597.39 - $597.39
    $597.39
    $698.47
    $698.47 - $698.47
    $698.47
    Sold out
  • Sold out
    $69.10 - $69.10
    $69.10
    $83.82
    $83.82 - $83.82
    $83.82

    45 inch Left Side Case Race Standard

    V-TWIN MANUFACTURING
    Out of stock

    45 inch left side standard case race is machined and ground to factory specifications. FITMENT1939 / 1952 WL 1939 / 1973 G ACCESSORY ITEMS10-022...

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    $69.10 - $69.10
    $69.10
    $83.82
    $83.82 - $83.82
    $83.82
    Sold out