Vibrant -6AN Female to Male Inline Check Valve 2019-subaru-wrx-sti-esi5033636 It has ORB-8 inlet ports

It has ORB-8 inlet ports and ORB-6 outlet ports

No permanent modification to the vehicle is required

HW4-SPSS kit features a Sport pressure plate for a nice upgrade

Males AN-08

Vibrant -6AN Female to Male Inline Check Valve 2019-subaru-wrx-sti-esi5033636 It has ORB-8 inlet portsVibrant Performance Ball Style Inline One Way Check Valves are lightweight and constructed entirely from 6061 Aluminum alloy. Our Ball Style Inline One Way Check Valves are designed to prevent flow back of all varieties of fuel, oil or coolant. Vibrant Check Valves will stand up to the most rigorous operating environments and are capable of handling temperatures ranging from 30deg F to 400deg F and operating pressures up to 300psi. All Vibrant