Earl's breather tanks are made from 6061 aluminum and have internal oil baffling. These tanks feature a -12 AN O-ring inlet port, knurled drain valve with an optional 1/8" NPT outlet port for use with a remote drain (or to drain back to the oil pan), w/ 4-bolt mounting brackets. Includes a heavy duty stainless steel mesh filter which has a billet aluminum housing to reduce weight. The filter may be removed to expose a -12AN Male. Ideal for use in all racing applications (i.e. engine PCV, dry sump tanks, transmissions, and rear-end venting). Black anodized finish.