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BIG TWIN
“Super-Pump” Spring Kit for 1966-99 Big Twin 
engines. This color coated spring kit ensures 
that your engine maintains the recommended 
oil pressure of at least 10 p.s.i. @idle and up to 
36 p.s.i.@road speed with a warm engine. Each 
spring is individually installed in the pressure relief 
valve of the oil pump. Works in all stock oil pumps 
as well as S&S and other aftermarket pump.
VT No. 13-9222
Oil Pump
Sealing Washers for pressure switch, relief valve and tappet oil 
screen.
VT No.  OEM 
Fits 
Type
14-0033  6377 
1950-99  Oil Pump, 10 pack
14-0503  11105  1970-99  Tappet, Relief Check Plugs,O-Ring
A-Relief Valves and Springs.
VT No.  OEM 
Years    Item
13-0111 26207-83  1983-00  Spring
12-1418 26400-82  1983-99  Valve
B-Check Valve Springs.
VT No.  OEM 
Years
13-0112 26262-80  1981-99
C-Ball
12-0158 8866 
1954-99
1981-2000 
A-Relief Valve/By Pass Kits include spring, plug and valve.
VT No. 12-1486
B-1981-99 Check Valve Kits include ball, spring and cap.
VT No. 12-1487
Tappet Oil Screens are exact replacement of 
OEM, each.
VT No. 
OEM 
Years
12-1515 24981-70  1970-99
12-0392 24983-00  2000-up
Oil Screen Spring for the tappet oil screen, 10 
pack. 24982-70, 1970-82.
VT No. 13-0109
6377
Tappet Oil Screen, Oil 
Pump Check Valve 
and Relief Valve Plugs
Replacement styles as 
shown.
VT No.  #  OEM 
Fits 
 
Finish
8707-6  A  26263-80  1981-99 3 Piece Set 
Chrome
37-9226  B  3 Plugs  1981-99 Set   
Chrome
2073-2  B   
1981-99 Each  
Chrome
8703-2*  A  26263-80  1980-99 All   
Chrome
9644-2*  C  26263-80  1980-99 All    
Chrome
9645-2*  C  26263-80  1980-99 All   
Cadmium
9634-4  C  26263-80  1980-99 2 Piece Set 
Chrome
9635-4  C  26263-80  1980-99 2 Piece Set 
Cadmium
37-8960* D  26279-89  1981-99 Dome Acorn 
Chrome
*Note: The 1981-up uses the same plug on check valve, tappet 
screen and relief valve.
A
B
C
D
Keys for Oil Pump Gears.
VT No.  OEM 
Fits
12-0204  26340-36 1941-1967 Big Twin
12-0205  26348-15 1941-up Big Twin,1972-76 XL-XLCH
Big Twin Oil Pump Gasket Kits include 
gaskets, seals, snap ring balls and keys. 
Spring and ball not included with James 
Kits.
James  GB No.   #  OEM 
Use  Years
15-0952  15-0137  B 26273-80B Case  1980-91
15-0957  15-0683  A 26276-92  Cover 1992-99
  — 
15-0682  B 26273-92  Case  1992-99
15-0955  15-0138  A 26276-80A Cover 1980-91
Mylar
15-0953  15-0295  B 26273-80B Case  1980-91
15-0956  15-0296  A 26276-80A Cover 1980-91
B
A
12-1515
12-1486
12-1487
Pro Just Adjustable Pressure Relief Cap allows 
the precise adjustment of oil pressure by turning 
the adjusting screw clockwise to increase oil pres-
sure or counterclockwise to reduce oil pressure. 
Comes with a “super pump” spring provided in 
our spring kit 13-9222. Works in stock 1981-99 oil 
pumps as well as S&S and other aftermarket oil 
pumps. Fits 1981-99 without oil vent.
VT No. 12-9921
12-0392
Oil Screen Kit includes proper plug, 
screen, O-ring and spring.
Chrome  Stock  
Years
Cap Replica
12-0152  12-0220 
1981-99
12-0152
James  GB No.  Type  Years
15-0854    —  Mylar 1981-91
15-0855 14-0026 Paper  1981-91
15-0856 15-0710 Paper  1992-99
15-1226     — 
Coated  1992-99, Metal
Big Twin Oil Pump Gaskets are available 
in 10 pack.
Chrome Engine Case Allen Bolt Kit 
fasten engine case halves together. Fits 
1983-95 Big Twin Evo.
VT No. 37-9191