The TPR breather block will replace your factory cast aluminum part allowing you to install larger breather lines and more of them. Has (1) -12 and (2) -10 ORB port fittings, comes std with a -12orb to -16 an fitting installed. This is same breather block included in our TPR breather kit. Includes ARP bolt kit. We offer other ORB to an port fittings to fit your needs just ask us. 

• Machined from 6061 billet aluminum