3/8" (10mm) Black Silicone Boost Coolant Vacuum Bypass Cap - Pressure tested!
$18.99
Whether you are deleting a heater core, bypassing a coolant line, or capping off a vacuum port on a high-boost turbo manifold, the Scram Speed Reinforced Silicone Cap is engineered to last forever. 3/8" 10mm PCV ports, small coolant bypass lines.
