457
Breather Gears
Breather Parts
A-Big Twin Steel Breather Valve is a machined breather valve
and gear. Designed to replace the stock steel or plastic units.
Order 8-piece thrust washers separately. Available in stock
duration only with either STD or +.030 O/S outside dimension.
VT No. Years
Size
Brand
STD
S&S
+.030
S&S
STD
S&S
STD
Sifton
+.030
S&S
STD S&S
STD Sifton
+.030 S&S
Washer Set S&S
Washer Set Sifton
Washer Set S&S
Washer Set Sifton
*Note: Must be used with 1954-77 Pinion & Cam Gears.
**Note: Must be used with late 1979-82 type
thrustwashers only.
Thrust Washer Set, Breather Valve for 1950-78 BT. 4 steel, one
of each: 110, .115, .120, .125
Primary Breather Tubes for Big Twin models.
VT No. # OEM
Years
Item
Tube
Tube
Snoot
1958-64
All
Rubber Nipple
Tube with Nut
Tube with Nut
24914-58 1958-64
Stud Only
*Note: Includes 24925-58 spacer, 24914-58 stud, 24922-58
collar, 24923-58 cap and 24918-58 rubber ripple.
Breather Screens and Separator in
five packs fits 1936-69 BT.
VT No. OEM
Item
Sifton
T M
1948-77 Breather
Gear Kit is constructed of
precision ground steel with
screen installed. 8 piece
steel thrustwasher set
included.
A
A
B-Stock Plastic Breather Valves.
VT No. OEM
Year
C-Thrust Washer Set, Breather
Valve for 1950-99 BT includes one
of each size noted.
VT No. Fits
Set
.110, .115, .120, .125
.130, .135, .140, .145
.130, .135, .140, .145
.150, .155, .160, .165
Big Twin Pinion Parts. Kit is complete with proper parts.
VT No. Fits
Kit
5 pc. Kit
4 pc. Kit
Pinion Shaft Seal Ring is used on all 1940-53 OHV Big Twins,
sold each. Replaces 24697-40.
Sifton Air
Ramp fits
S&S/Sifton
Breather Gear
on 1936-99
models to
remove more
air and oil from crankcase.
Requires removal of screen for
installation. Gear not included.
Installed
Chrome Oil Pump
Covers mount onto
the existing bolts on
Big Twin models
VT No. Years
w/chain oiler fitting
