Air Cleaner Mounts and Engine Breathers

Screw Kit for OEM Style Air Horns
Screw Kit for OEM Style Air Horns
These are always missing or incorrect. Exact reproductions of the special screws and nuts to fasten the air intake cover to the backing plate.
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Linkert Air Cleaner Mounting Kit
Linkert Air Cleaner Mounting Kit
Reproductions of screws and lock plates to mount the air cleaner backing plate to Linkert carburetors.
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Screws for Intake Connections and Air Horns
Screws for Intake Connections and Air Horns
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Air Cleaner Brackets Shovelhead and Ironhead XL
Air Cleaner Brackets Shovelhead and Ironhead XL
Chromed steel bracket to support round 8” accessory air cleaners from the Factory that many prefer to replace OEM ham can filters. Works of course for many other Custom applications.
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Bates Stock Aircleaner Eliminator Kit
Bates Stock Aircleaner Eliminator Kit
The installation of a a CV carburetor with Custom air cleaner on a Panhead, Shovelhead or Ironhead Sportster involves two problems:
the protruding upper carb end interferes with the commonly flat backing plates of accessory air cleaners, omission of the stock CV air cleaner results in an unsupported carburetor,
This smart kit inludes a 3 mm spacer plate, which resolves the first problem and a flange adapter with two spiral springs to connect spacer and plate and thus safely hold the carburetor in its rubber flange = resolution of the second problem.
Will fit all motors with 2-bolt Tillotson, Bendix or Keihin (butterfly) manifolds. Installation also requires a 2-bolt flange adapter and a carburetor support bracket, which both need to be purchased separately.
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Bates Stock Aircleaner Eliminator Kit 2.0
Bates Stock Aircleaner Eliminator Kit 2.0
If you own a Shovelhead, Panhead or Ironhead Sportster, this bracket is for you. It allows attaching a CV carburetor to 2-bolt Tillotson, Bendix or Keihin (butterfly) manifolds. The bracket even has a mount for the CV-carburetor choke cable. Longer screws and little spacers to go to the carburetor lid are included.
Depending on configuration, installation might require:
2-bolt flange adapter, carburetor support bracket, air cleaner spacer 3mm, gaskets,
Please acquire these items separately.
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Bates Custom Air Cleaner Spacer for CV Carburetors
Bates Custom Air Cleaner Spacer for CV Carburetors
To mount custom air cleaners with a flat backing plate on CV carburetors, the air filter backing plate must move further out, otherwise it will be in contact with the vacuum chamber. These spacers provide the required distance.
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HBS Bracket and Breather Kit for Evolution CV
HBS Bracket and Breather Kit for Evolution CV
Combination of carb support bracket and breather system for CV carbs. Works with most custom air cleaners, carb covers and velocity stacks.
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Custom Air Cleaner and Carburetor Bracket
Custom Air Cleaner and Carburetor Bracket
Chrome-plated carburetor support brackets for Big Twins 1984-up und Sportster 1986-up. Fit between carburetor and all flat air cleaner backing plates and mount to the stock mounting threads at the cylinder heads. Models equipped with the cylinder head breather system require an additional breather bolts.
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Prism Supply Breather Bolts
Prism Supply Breather Bolts
These breather bolts are a great way to reduce your cylinder head vent fittings to a minimum.
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InMaxWeTrust Breather Bolts
InMaxWeTrust Breather Bolts
These breather bolts are a great way to reduce your cylinder head vent fittings to a minimum.
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GP Breather Kits
GP Breather Kits
Compilation of the parts which are required for the installation of custom air cleaners.
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Carburetor Bracket for Evolution CV
Carburetor Bracket for Evolution CV
These kits are designed to support CV-Carburetors on models equipped with the cylinder head crankcase breather system, when mounting custom air cleaners that lack the support.
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Replacement Parts for Carburetor Bracket for Evolution CV
Replacement Parts for Carburetor Bracket for Evolution CV
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Kuryakyn Bluegrass Breather Kits
Kuryakyn Bluegrass Breather Kits
Unfortunately, almost all Harley-Davidson engines that vent the crankcase through the cylinder heads also expel oil through the same passages. Venting directly into the air cleaner, especially a free-flowing air cleaner, often results in an oily mess on the side of the bike. The Bluegrass Breather kit is a simple yet effective way to keep that oil inside the engine or at least keep it contained. The banjo fittings and chrome tubes route the vented gasses upward so gravity can keep any expelled oil droplets in the engine where they belong. Vent lines can be routed up and out of sight beneath the tank, but an optional catch tank is also available for those who would rather vent to a closed container.
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Kuryakyn Catch Tank for Bluegrass Breather Kits
Kuryakyn Catch Tank for Bluegrass Breather Kits
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Cut-to-Length Breather Bolts
Cut-to-Length Breather Bolts
Solve the problem when mounting a carb support bracket with a pair of these extra-long breather bolts, which you can simply cut to the required length.
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Crankcase Breather Kits for Mikuni Carburetors
Crankcase Breather Kits for Mikuni Carburetors
Required when installing smooth-bore Mikuni carburetors HS 40 & HSR 42/45 on models with crankcase breathers that vent through the heads. Works with HSR 42/45 on Big Twin, Sportster and Buell models.
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S&S Reducer Bushings
S&S Reducer Bushings
These inserts reduce the 1/2”-13 breather bolt thread to 5/16”-18, and come in helpful when you install later Evolution cylinder heads with ventilation to earlier engines with ventilation on the crankcase.
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K&N Air Vent Filter
K&N Air Vent Filter
Crankcase breathers on performance bikes are prone to suck in debris, due to their enhanced respiratory capacity. This nice little filter keeps dirt outside the engine and the oil inside. Fits any 5/16” (8 mm) tube or connector, and - of course - not only racebikes.
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Related Topics

Air filter holder

You can't have an air filter without a bracket. But standard doesn't always work either ... To prevent the air filter from falling off, vibrating unnecessarily or otherwise starting a life of its own, it needs brackets, retaining screws and/or supports. On the Evolution and Twin Cam models, the engine ventilation is also integrated into the air filter mounting. The brands Bates, BCM and HBS offer clever and cool solutions for these problems.

Have any questions?

Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: service@wwag.com