Engine Breather Filters

Spectre's Oil Filler Breather Cap Twist-In features an internal baffle to prevent oil splash and provides a secure tight seal with superior ventilation. This cap can be used with all twist-lock type filler holes, including with oil filler extensions...

This Spectre breather filter, also known as a crankcase vent filter, has a flange with an inside diameter of 10mm. By using the included adjustable worm gear clamp, this air filter will fit tubes with outside diameters from 3/8 inch to 1/2 inch (8-12mm)...

This Spectre breather filter, also known as a crankcase vent filter, has a flange with an inside diameter of 10mm. By using the included adjustable worm gear clamp, this air filter will fit tubes with outside diameters from 3/8 inch to 1/2 inch (8-12mm)...

This Spectre breather filter, also known as a crankcase vent filter, has a flange with an inside diameter of 10mm. By using the included adjustable worm gear clamp, this air filter will fit tubes with outside diameters from 3/8 inch to 1/2 inch (8-12mm)...

Moroso Positive Locking Breather w/Filter - Billet Aluminum

Moroso Oil Separator/Breather - 5/8in Hose - Gold Iridite

Moroso Oil Separator/Breather - 3/4in Hose - Chrome

Moroso Positive Locking Breather - 3/4in Hose - Clear Finish

Ford Racing's push-in breather oil cap is available for open crankcase engines and will fit most Ford Racing 289/302/351W valve covers.

Ford Racing's push-in breather oil cap is available for open crankcase engines and will fit most Ford Racing 289/302/351W valve covers.

Ford Racing's push-in breather oil cap is available for open crankcase engines and will fit most Ford Racing 289/302/351W valve covers.

BMC Universal Engine Breather Filter 25mm Inlet / 40mm Filter Length

BMC Universal Engine Breather Filter 12mm Inlet / 40mm Filter Length

BMC Universal Engine Breather Filter 30mm Inlet / 40mm Filter Length

BMC Universal Engine Breather Filter 20mm Inlet / 40mm Filter Length