Built into the gascolator is an 1/8″ NPT top outlet for a pressure sender/primer line and a rear 3/8″ anchor hole that allows it to be firewall mounted without need of a bracket. A reusable 70 micron strainer mesh may be removed for easy cleaning. Gascolator has an 1/8″ NPT tapped bottom hole which accepts Curtis or Aeroquip remote drain. 1/4″ NPT FEMALE OR 3/8″ FLARED MALE. The F20B replacement fitting fits both gascolators.