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431
BIG TWIN
Front Mount Filter Unit incor-
porates filter and regulator 
mount for 1975-99 Big Twins 
and 1986-99 FXST-FLST 
models. Includes filter, chrome 
billet base and hose fittings.
VT  No. Item
40-1257 
Complete Kit
40-0711 Chrome Filter
40-1270 Center Thread Fitting
40-0798 Base with Hardware 
 
  As Pictured
40-1257 Installed
Pura-Flow Chrome Oil Filter Kit for 1936-99 Big Twins.
VT No.   
Fits
40-0096  
Kit
40-0709  
Replacement  Filter
40-0096 
40-0798
40-1257
Oil Filter Kit
FXST Style Oil Filter Kit features bolt on mounting behind 
shift plate. Fits Big Twin frames with 1970-up Shovel or 
Evolution engines. Can be used as an easy access auxiliary 
unit in addition to filter in tank. Bracket is replica of 1984-99 
FXST type replacing 63802-84. Oil spigots are copper and 
brazed in a vacuum for lasting durability. Includes chrome fil-
ter and 6 feet of rubber hose with clamps. 
VT No. 
Item 
40-0100   Complete kit
40-0709   Chrome filter 
40-0708   Black filter 
40-0100 
Installed
Oil Change Service Kit includes chrome filter and 4 bottles of 
superior Spectro Heavy Duty Lubricant.
VT No.  Fits
41-0050 1984-88 FXST, 1980-98 FLT, 1982-94 FXR, 
 
1984-up XL
41-0051 1991-98 Dynaglide
41-0052 1999-up All Twin Cam Big Twins
Oil Filter Kit to fit 1970-84 Big Twins nose cone engines 
when using an outside frame front pipe. Mounts under front 
engine mount. 
VT No.  Item
40-0091
 Chrome Housing & Bracket Kit
40-0093 Chrome Housing
40-0091
Oil Filter Nipple 
with raw finish for 
40-1257 fits 40-0711 
filter.
VT No. 40-1270
40-0100
Sifton Oil Pre-Filters are constructed of machined alloy with 
a #40 mesh screen installed to trap large debris and a circular 
magnetic collar to collect the ultra fine ferrous particles before 
they reach the engine. Unit can be installed in the following 
locations for 
3
/
8
” inner diameter oil line: 
•  Supply line before the engine on all models
•  Primary scavenger return line on Early FLH and FX models
•  Return line to oil tank on FL-EL-UL and models without a fac-
tory filter 
•  External oil return on high performance heads. 
•  Any pressure supply or return (use the prelifter with the ¹⁄₈” 
NPT body). 
   The ¹⁄₂” unit recommended for Softail TC-88 models on the 
path between the cam bearing housing and oil pump. 
VT No. 
Type   
Hose
40-0388  ¹⁄₈” NPT Body  ³⁄₈”
40-0387  Barbed end 
³⁄₈
40-0388
40-0387
Oil Line Filter Kit includes filter and 
compression fittings for ³⁄₈” stainless steel 
hose.
VT No. 40-0462
40-0096 
Oil Filter
Developed by 
Marty Maccolooum,
USA Cycles
40-0093