Flat Head Parts
Fit Big Twin 1930-48 45" models 1929-73.
GB
15-0531
Complete Engine Sets For Flathead (SV) Models.
GB No. Price James No. Price OEM Years Fits
15-0531
$47.00
15-0505
$67.00 17026-40 1940-73 All 45’s SV
15-0515
$60.00
15-0506
$82.00 17027-36 1936-48 74”-80” SV
15-0524
N/A     1930-36 74 SV, VL
Early Top End Kits.
GB No. Price James No. Price Years Fits
15-0525
$42.00
15-1182
$51.00 1940-73 45
15-0527
$59.00   1930-36 VL
15-0528
$47.00
15-1183
$57.00 1936-48 UL/ULH
45 Aluminum Head Set replaces front and rear on 1941-73. Order bolts and washers separately. Replaces 16683-39 & 16681-39.
VT No. Price Compression
49-0908
$500.00 Low
49-0945
$503.00 High
49-0945
49-0909,15-0228 Aluminum Head Set for all 1936-48 74 & 80 SV motor, deep fin, medium compression. Replaces front and rear 16670-36F, 16673-36R. Sold as pairs.
VT No. Price Type
49-0909
$688.00 Head Set
15-0228
$33.00 Copper Gasket Set
Original V-Twin Replica since 1977!

SV ULH Headbolt Wrench.
VT No. Price
16-0067
$28.00
Adapter Set allows 14mm plugs to be used in earlier heads with 18mm spark plug threads.
VT No. Price
32-0057
$24.00
32-0057
16-0067
Headbolts
Head Bolts, Head Nut and Washer Kits. Flat Heads
Cadmium Price Chrome Price Parkerized Price Item
   
2183-16
N/A Stud Set (1929-50) 16 pc
7709-32
$44.00  
2152-36
N/A 1932-40 45 Head bolt nut w/washer
7711-18
$90.00
8216-18
$113.00
9727-18
$90.00 74 & 80 with Aluminum Heads
9889-16
$80.00
9888-16
$100.00   1951-73 45 WL & G
7711-18-45
$82.00
8217-18-45
$100.00
9705-18-45
$81.00 45 with Aluminum Heads
7712-36
$89.00
8218-36
$113.00
9728-36
$89.00 45, 74 & 80 w/Cast Iron Heads
2056-1
N/A
2055-1
$24.00   1965-73 45 Head Bolt for
      Alternator Mount
   
49-0276
$20.00 45 Bolt only, 14-40MA (NOS)
Head Bolt Washer Kits
7710-18
$36.00
8215-18
$52.00
9698-18
$38.00 Aluminum Flathead Washer Kit
2183-16,7709-32,2152-36,7711-18,8216-18,9727-18
Studs for 1930-50 45"VT No. 2183-16
1937-48 BT SV Upper and Lower
VT No. Price Type
9521-22
$48.00 Chrome
9522-22
$45.00 Cadmium
9723-22
$45.00 Parkerized
45’s Lower Only
9625-16
$43.00 Chrome
8825-16
$38.00 Cadmium
9626-16
$38.00 Parkerized
1932-up Upper Only
9779-5
$21.00 Chrome
9780-5
$21.00 Cadmium
9781-5
$21.00 Parkerized
8121-34,8122-34,8123-34,8124-34,8125-34,8126-34
9521-22,9522-22,9723-22,9625-16,8825-16
Motor Case Bolt Kit includes the necessary hardware to bolt together the motor cases of the years listed.
Colony
Acorn Price Chrome Price Cad Price Fits
8121-34
$45.00
8122-34
$49.00
8123-34
$51.00 1936-39 Flathead BT
8124-34
$45.00
8125-34
$58.00
8126-34
$51.00 1940-48 Flathead BT
 
8619-17
$42.00
8620-17
$40.00 1937-73 45’s
   
9697-17
$40.00 1937-73 45’s Parkerized
8229-2,8230-2,9721-2
D-45 Top Motor Mount Spacers for spacing out the two longest head bolts on aluminum head models. 1941-73.
8229-2
$21.00 Chrome
8230-2
$21.00 Cadmium
9721-2
$19.00 Parkerized    

Side Valve Mounts
Side Valve Motor Mounts fit motors by head type cast iron or aluminum. Ends of mount are attached by bolts in head bolt set.
Zinc Price Chrome Price OEM # Type Fits
31-0108
$40.00
31-3993
$44.00 16851-37 A Both 1936-48 BT
49-1932
$26.00
31-3992
$0.00 2806-40 B Alum. 1936-73 45
31-0211
$33.00
31-0210
$37.00 16855-51 C Iron 1936-73 45
49-1932,31-3992
31-0211,31-0210
31-0108,31-3993
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