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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.  
Brand
13-9222 
E.R.T. SP-1
Oil Pump
Sealing Washers for pressure switch, relief valve and tappet 
oil screen.
VT No.  OEM 
Fits 
Type
14-0033 6377 
1950-99 O-Pressure, 5 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
2074-6  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.
Big Twin Oil Pump Gaskets are available in 
10 pack.
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  15-0233 Mylar 
1981-91
15-0855  14-0026 Paper  1981-91
15-0856  15-0710 Paper  1992-99
15-1226      — 
Coated  1992-99, Metal