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386
Chrome Crankcase Breathers available to accept hose or ¹⁄₈” 
NPT fitting.
VT No. 
Type
40-0434  ³⁄₈”
40-0447  ¹⁄₈” NPT
Breather
40-0434
40-0447
Chrome Engine Breather Oil Collector 
designed to collect the oil mist from breath-
er hose which eliminates engine oil from 
collecting in air cleaner. Features a high 
flow air filter which acts as a internal oil baf-
fle allowing the oil and air to separate more 
efficiently by promoting unrestricted breath-
ing. The air filter can easily be cleaned. A 
90° barbed fitting fits breather hoses per-
fectly. On the bottom is a drain plug to allow 
drainage on a regular basis. Measures 5 
3/8” x 1¹⁄₂” and includes chrome mounting 
clamp.
VT No. 
Item
40-0595 
Complete Collector
40-0447 
Replacement Filter
14-0925
40-0875
Crank Vent features replaceable umbrella valve available sep-
arately.
VT No.   Item
40-0875 Canister
14-0925 Umbrella Valve (10)
Breather Oil Collector Can 
includes chrome clamp. 
Order filter separately.
VT No. 40-0652
Crankcase Breathers connect to breather hose when stock 
air cleaner has been replaced. Filters feature chrome tops with 
washable elements. Bracket can be mounted to transmission 
case. VT No. 40-0246 includes chrome bracket fastened to 
body by allen screws, hose fitting is ¹⁄₈” NPT threaded into body 
and can be changed to 90° for special applications. 
VT No. 
Type
40-0356 
With bracket
40-0357 
Without bracket
40-0246 
With bracket
Chrome Crankcase 
Vent clamps direct 
to ³⁄₈” breather hose. 
Unit comes with a ⁵⁄₁₆” 
stud and nut or ¹⁄₄” x 
20 threaded insert to 
mount from bracket. 
Measures 2” diameter 
x 1¹⁄₂” high. 
VT No.  Type
40-0381  Stud, K&N
40-0570  Threaded
40-0356
40-0357
40-0246
40-0570
Chrome Billet Crank Case Breather 
includes ¹⁄₈” NPT fittings.
VT No. 40-0003
Sifton Universal 
Breather Vent 
Canister is a one way 
check valve;
 includes 
line and clamps. Non 
serviceable unit.
VT No. 40-0445
40-0381
40-0355
Chrome Vented Breather Canister 
accepts ¹⁄₈” NPT fittings, not included.
VT No.  Item
40-0457  Breather
40-0449  Banjo Tube Kit
40-0450  Straight Tube Only
40-0457
40-0595
Uni Filter Crankcase Breather is plastic construction with a zip tie 
loop for attachment and is washable for reuse.
VT No.  Size  VT No.  Size
40-0355  ⁵⁄₁₆”   40-0353  ¹⁄₂”
40-0354  ³⁄₈” 
40-0352  ⁵⁄₈”
40-0353
40-0352
40-0354
Important Note:
 Some items on this page may be emission-related parts subject to California or other emission control laws. Please see 
note for important information regarding emission control regulatory compliance and warranty information.
Heavy Breather Performance 
Air Cleaner Kit features 
a black finish and includes 
high flow air cleaner element, 
intake tube, back plate, rain 
sock and all mounting hard-
ware.
VT No. 34-0083