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503
CLASSIC
CLASSIC
Tappet Base 1948-84 Big Twin
Tappet Base Bolt Set for Big Twin models.
1936-75, ¼ — 24 Thread with stock lifter blocks
VT No. 
Finish 
Style
8605-16 Cadmium 
Hex
8605-16T  Nickel Plated 
Hex without taper
8604-16 Chrome 
Hex
8604-16T  Nickel Plated 
Hex with taper
8102-16*  Chrome  
Slot
8103-16*  Cadmium  
Slot
9622-16  Parkerized  
Slot
7131-8 Chrome 
Acorn
8760-16 Chrome 
Allen
2099-16  Chrome  
Phillips
2100-16  Cadmium  
Phillips
*Note: VT No8102-16 has a chrome screw slot, VT No 8103-
16 is cadmium and slotted for 1936-53 as stock, can be ret-
ro-fitted with hex top versions.
1976-up with Stock Tappet Blocks. ¼ — 20 thread without 
taper.
7628-8 Acorn
8726-8 Allen
8709-8 
12 point, Cadmium
8709-8T  Nickel Plated, ¹⁄₄ — 20 UNC
8708-8 
12 point, Chrome
8710-8 
12 point, Black
For using late tappet bases, without taper, in early 1936-
75 cases with ¼ — 24 thread.
8712-8 
12 point, Cadmium
8711-8 
12 point, Chrome
8480-8 Acorn
8727-8 Allen
¼ — 20 Thread Tapered Screws
for aftermarket cases using pre1976 tappet blocks.
9814-16 Chrome
9828-16  Allen, Chrome
Chrome Pushrod Cover Set with chrome lifter base covers 
as a complete dress up kit.
VT No. 
Year
42-0904  1948-65
42-0902 1966-79
7628-8
8709-8
8726-8
Special Tappet Gaskets. 74 and 80 tap-
pet based gaskets without oil return holes 
for use in engines with solid lifters five 
front and five rear. Fit 1941-85 Big Twin.
 
VT No. 15-0236
15-0236
10-0988
42-0902
Tappet Base Gasket for 1949-99.
GB 
James OEM 
Type
15-1542 
   — 
Set 
Three Front and Three Rear
15-0119 
15-0926  18633-48A Rear
15-0120 
15-0927  18634-48A Front
15-1542
15-0119
8605-16T
8709-8T
Big Twin Tappet Block fits 1948-83, in chrome or zinc finish. 
Order seals and gasket kit separately.
VT No. OEM 
Finish  Type 
10-0923 
Set  Zinc Panhead
10-0095 Set 
Chrome  Set
10-8173 Set 
Zinc 
Set
10-1325 Set 
Zinc 
Panhead
10-0987 
Replica 
Chrome 
Front and Rear
10-0988 
Replica 
Zinc 
Front and Rear
10-7530 
Set  
Alloy, raw 
1948-52
8708-8* 
Screws 
Chrome 
20T 1976-84
8711-8* 
Screws 
Chrome 
24T 1948-75
15-0550 Kit 
Gasket  1948-79
15-0551 Kit 
Gasket  1979-84
*Note: 12 point style for Big Twin
10-8173
10-0095
10-0095 Installed
10-0987
10-0113
10-0923
10-7530
10-7530 Installed
10-1325