Home Shop Engine Lower End Parts for Gear Case Gear Case Parts for Big Twin Flatheads 1937-1948
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Gear Case Parts for Big Twin Flatheads 1937-1948

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fits Big Twin Sidevalves 1937-1948
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57-043 Gear Case Parts for Big Twin Flatheads 1937-1948 Bearing seal ring; for Pinion shaft; fits Big Twin Flathead 1937-1948; replaces OEM 24696-40 $30.44 each
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69-513 Gear Case Parts for Big Twin Flatheads 1937-1948 Spring; for Pinion shaft; fits Big Twin Flathead 1937-1948; replaces OEM 24700-37 $2.40 each
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63-107 Gear Case Parts for Big Twin Flatheads 1937-1948 Bushing; for Pinion shaft; replaces OEM 25591-37 $35.92 each
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63-116 Gear Case Parts for Big Twin Flatheads 1937-1948 Bushing; for front inl. camshaft; gearcase cover; replaces OEM 25595-37 $13.88 each
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63-139 Gear Case Parts for Big Twin Flatheads 1937-1948 Bushing; for Cam shaft; in crankcase; replaces OEM 25599-37 $10.77 each
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63-185 Gear Case Parts for Big Twin Flatheads 1937-1948 Idler gear; for Generator; steel; replaces OEM 25775-30 $126.38 each
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69-512 Gear Case Parts for Big Twin Flatheads 1937-1948 Spring; for Pushrod covers; replaces OEM 18247-39 $4.05 each
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62-082 Gear Case Parts for Big Twin Flatheads 1937-1948 Pinion gear; steel; replaces OEM 24010-37 $148.96 each
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62-083 Gear Case Parts for Big Twin Flatheads 1937-1948 Gear; for Pinion shaft; for breather valve and scavenger pump; steel; replaces OEM 25302-37 $106.22 each
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60-815 Gear Case Parts for Big Twin Flatheads 1937-1948 Seal ring; for Oil separator; fits Sidevalves 1937-1973; replaces OEM 585-37, and 25281-37 $21.45 each
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60-817 Gear Case Parts for Big Twin Flatheads 1937-1948 Guide pins; for Seal ring oil separator; fits Sidevalves 1937-1973; replaces OEM 585-37B, and 25285-37 $5.24 pair
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69-507 Gear Case Parts for Big Twin Flatheads 1937-1948 Spring; for Seal ring oil separator; fits Sidevalves 1937-1973; replaces OEM 585-37A, and 25287-37 $3.50 each
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Related:
79-447 Gear Case Parts for Big Twin Flatheads 1937-1948 Snap ring; for Idler gear shaft; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948; replaces OEM 25810-15; gross weight: 10 g $1.13 each
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63-121 Gear Case Parts for Big Twin Flatheads 1937-1948 Bushing; for rear int. camshaft; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948; in gearcase cover; replaces OEM 25588-37; gross weight: 10 g $19.42 each
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64-091 Gear Case Parts for Big Twin Flatheads 1937-1948 Shim; for Idler gear; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948, K Modell und Sportster 1954-1974; replaces OEM 25811-11; USA; gross weight: 1 g $0.51 each
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60-807 Gear Case Parts for Big Twin Flatheads 1937-1948 Oil screen; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948, model K and Sportster 1954-1976; replaces OEM 411-37, and 24975-37; gross weight: 10 g $7.18 each
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63-133 Gear Case Parts for Big Twin Flatheads 1937-1948 Bolt; for Idler gear shaft; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948; replaces OEM 25794-30; gross weight: 20 g $3.40 each
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60-809 Gear Case Parts for Big Twin Flatheads 1937-1948 Breather valve; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948; gearcase cover; replaces OEM 25350-37; gross weight: 10 g $13.01 each
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60-803 Gear Case Parts for Big Twin Flatheads 1937-1948 Oil screen by Colony; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948, model K and Sportster 1954-1976; steel; with pin; replaces OEM 333, 411-37, 24975-37, and 24978-57; gross weight: 25 g $15.32 kit
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60-811 Gear Case Parts for Big Twin Flatheads 1937-1948 Pin; for Oil screen; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948, model K and Sportster 1954-1976; replaces OEM 411-37A, and 333; gross weight: 3 g $1.55 each
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63-105 Gear Case Parts for Big Twin Flatheads 1937-1948 Bushing; for Cam shaft / Gear cover; for front int. and exh. camshaft Big Twin SV 1937-1948, 45” 1937-1973, model K 1952-1956, front int. and exh., rear exh. camshaft Sportster 1957→, camshaft bushing in engine case Sportster 1991-1994; replaces OEM 25586-37; gross weight: 40 g $13.88 each
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63-114 Gear Case Parts for Big Twin Flatheads 1937-1948 Bushing; for rear exh. camshaft; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948; in gearcase cover; replaces OEM 25590-37; gross weight: 40 g $13.88 each
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63-123 Gear Case Parts for Big Twin Flatheads 1937-1948 Dowel pin; fits 45 cui/750cc 1937-1973, Big Twins 1930-1999; on various bearing bushings; length: 1/4”; Ø 1/8”; replaces OEM 271, and 275; gross weight: 10 g $0.47 each
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63-130 Gear Case Parts for Big Twin Flatheads 1937-1948 Shaft; for Idler gear; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948; length: 33 mm; Ø 14 mm; replaces OEM 25788-30; gross weight: 30 g $31.12 each
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63-135 Gear Case Parts for Big Twin Flatheads 1937-1948 Bushing; for Idler gear; fits 45 cui/750cc 1937-1973, Big Twin Flathead 1937-1948, Big Twin OHV 1936-1969; replaces OEM 25785-30A; gross weight: 20 g $20.07 each
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64-092 Gear Case Parts for Big Twin Flatheads 1937-1948 Cam shim by Bender Cycle; fits 45 cui/750cc 1937-1973, Big Twin Sidevalve 1937-1948, K 1952-1956, Sportster 1957-1985; steel; thickness: 0.178 mm; ID x OD: 18 x 27 mm; replaces OEM 6769; USA; gross weight: 1 g $0.71 each
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64-093 Gear Case Parts for Big Twin Flatheads 1937-1948 Cam shim by Bender Cycle; fits 45 cui/750cc 1937-1973, Big Twin Sidevalve 1937-1948, K 1952-1956, Sportster 1957-1985; steel; thickness: 0.127 mm; ID x OD: 18 x 27 mm; replaces OEM 6770; USA; gross weight: 1 g $0.71 each
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