330 / 1177
WINDSHIELDS /
FAIRINGS
AUDIO /
COMMUNICATION
SEATS /
LUGGAGE
BARS/MIRRORS /
CONTROLS
EXHAUST
AIR /
FUELSYSTEMS
ENGINE
TRANSMISSION /
DRIVELINE
GASKETS /
SEALS
ELECTRICAL
LIGHTING
CABLES
BRAKES
OIL FILTERS
SUSPENSION
BODY
WHEELS
TIRES /
TIREACC.
BIKEACC.
COVERS / LOCKS /
TIEDOWNS
CHEMICALS
TOOLS
HELMETS
HELMETACC.
EYEWEAR
APPAREL /
RIDERACC.
PROMOTIONAL
REFERENCE
INDEX
x
X X
X
X
330
CRANKCASE BREATHERS
• Crankcase vent filter with base
• For 3/8” hose
• Chrome finish
• Replacement filter available
• Sold each
CRANKCASE VENTING SYSTEM
• Prevents blown or weeping gaskets
• Produces the proper amount of
vacuum in the crankcase, at all RPM
ranges
• Your engine gains quicker throttle
response
• You’ll gain 2-8% of usable rear wheel
horsepower
• It snaps open for easy cleaning,
and is light weight, compact and not
restricted to position to fit all H-D
models
Application
Year
WPS#
List
HARLEY-DAVIDSON
Big Twins/Sportsters All
39-1206
$124.95
Description
WPS#
List
A Crankcase Breather Assembly
820-51578 $15.95
B Replacement filter (for 820-51578)
820-51579
9.95
C Dual Breather Filter
820-51580 12.95
A
B
C
ENGINE