COMPATIBILITY20+ VW Golf GTI24+ VW Golf GTI 38020+ VW Golf R24+ VW Golf R3332023 VW Golf R20 Radium Engineering catch cans feature large 10AN ORB ports, a 4AN ORB drain port, 2-step oil separation baffling, and an O-ring sealed dipstick. These kits include everything needed for a complete installation. The catch can draws out oil and water condensation from the crankcase gasses that would otherwise be drawn into the intake manifold. Furthermore, the closed system prevents unwanted oil vapors from entering into the cabin.  FEATURES-Effectively raises the octane and increased engine performance from cleaner inlet air-Prevents oil buildup in the intake or intercooler system walls, throttle body, intake manifold, etc.-Excessive oil collection can be an indicator of a damaged engine.-Lowers hydrocarbon emissions-Capacity: 7 fluid ounces 20-0887-FL CATCH CAN KIT, CCV, 20+ VW GOLF, FLUID LOCK This catch can mounts using OEM holes and integrate perfectly with the surrounding components. The anodized aluminum catch can bracket mounts behind the LH headlight. SAE quick connect fittings are provided for both catch can ports. No permanent modifications are required as the hoses connect to the factory fittings and connectors.  The catch can kit also fits under the OEM engine cover. INCLUDES-Baffled Fluid-Lock® oil catch can-Anodized aluminum bracket-Quick connect hose ends-Quick connect fittings-10AN (5/8") PCV hose-10AN adapter fittings-Stainless hardware  -Spring clamps Instruction PDF