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Motor Parts Flatheads 1937-1948

Motor Parts For Harley-Davidson Big Twin Flatheads 1937-1948
167-38 18198-38 Valve Guide Gaskets

167-38 18198-38 Valve Guide Gaskets

$ 0.75
16769-36 Old 11-36A Big Twin Flathead Copper Head Gaskets USA

16769-36 Old 11-36A Big Twin Flathead Copper Head Gaskets USA

$ 26.41
16769-36A Old 11-36A Teflon Head Gaskets That for All Big Twin U Models

16769-36A Old 11-36A Teflon Head Gaskets That for All Big Twin U Models

$ 15.00
16851-37 Old 2806-37 U .UL, ULH Big Twin Flathead Top Motor Mount USA Made

16851-37 Old 2806-37 U .UL, ULH Big Twin Flathead Top Motor Mount USA Made

$ 62.40
18082-37 Old 165-37 Exhaust Valve Nitride

18082-37 Old 165-37 Exhaust Valve Nitride

$ 25.95
18082-37X Old 165-37 1/8" Oversize Exhaust Valve Nitride

18082-37X Old 165-37 1/8" Oversize Exhaust Valve Nitride

$ 25.95
18082-57 Or 18086-80 Exhaust Valve Nitride

18082-57 Or 18086-80 Exhaust Valve Nitride

$ 24.95
18082-57X Or 18086-80 1/8" Oversize Exhaust Valve Nitride

18082-57X Or 18086-80 1/8" Oversize Exhaust Valve Nitride

$ 24.95
18245-39 Old 173-39A Upper Cork Valve Cover Seal

18245-39 Old 173-39A Upper Cork Valve Cover Seal

$ 1.75
18247-39 Old 173-39C Valve Cover Spring

18247-39 Old 173-39C Valve Cover Spring

$ 1.59
18257-39 Old 173-39C Lower Cork Valve Cover Seal

18257-39 Old 173-39C Lower Cork Valve Cover Seal

$ 1.80
18258-39 Old 175-39B Valve Spring Retainers

18258-39 Old 175-39B Valve Spring Retainers

$ 28.09
18259-39 Old 175-39C Fiber Valve Spring Cover Seal

18259-39 Old 175-39C Fiber Valve Spring Cover Seal

$ 1.16
18261-30 Old 175-30A Rubber Valve Cover Seal

18261-30 Old 175-30A Rubber Valve Cover Seal

$ 2.00
18630-26 Old 176-26 Valve Spring Cover Washer

18630-26 Old 176-26 Valve Spring Cover Washer

$ 1.57
1937-1948 ANDREWS CAM SET FOR U, UL, AND ULH

1937-1948 ANDREWS CAM SET FOR U, UL, AND ULH

$ 972.95
237-30 New 18631-30 Tappet Base Gasket

237-30 New 18631-30 Tappet Base Gasket

$ 0.99
24921-37 Breather Pipe Gasket

24921-37 Breather Pipe Gasket

$ 0.80
25227-37 Old 598–37 Gear Cover Gasket

25227-37 Old 598–37 Gear Cover Gasket

$ 4.40
26244-37 Old 589-37 Oil Pump Gasket Feed

26244-37 Old 589-37 Oil Pump Gasket Feed

$ 1.79
26246-37 Old 590-37 Oil Pump Return Gasket

26246-37 Old 590-37 Oil Pump Return Gasket

$ 1.80
27410-39 Old 1121-39 Intake Manifold Gasket

27410-39 Old 1121-39 Intake Manifold Gasket

$ 1.60
32522-37 Old 1541-37 Timer Base Gasket

32522-37 Old 1541-37 Timer Base Gasket

$ 0.80
46-21 New 16774-21 Cylinder Base Gasket Knucklehead Big Twin Flathead USA

46-21 New 16774-21 Cylinder Base Gasket Knucklehead Big Twin Flathead USA

$ 3.35
46-21X New 16774-21A Cylinder Base Gasket Knucklehead Big Twin Flathead

46-21X New 16774-21A Cylinder Base Gasket Knucklehead Big Twin Flathead

$ 32.95Sold Out
480-38 New 26550-38 Flathead Oil Pressure Switch

480-38 New 26550-38 Flathead Oil Pressure Switch

$ 39.95
7825-20 Grade 8 Headbolt Kit Colony USA

7825-20 Grade 8 Headbolt Kit Colony USA

$ 39.98
PARKERIZED UPPER & LOWER MOTOR MOUNT KIT SIDE VALVE BIG TWIN 9723-22

PARKERIZED UPPER & LOWER MOTOR MOUNT KIT SIDE VALVE BIG TWIN 9723-22

$ 43.83