Saad Racing BMW E46 M3 S54 PCV oil catch tank. Mounts in the factory air pump location (requires the OEM bracket for mounting) . All stainless steel contstruction for maximun durability. High quality silicone hose connections for the inlet and outlet. Packed with 304 stainless turnings for rust free and maintinance operation. 6 A/N stainless steel fitting welded on the bottom with a -6 A/N cap as standard. Our unique design allows for the oil captured within the tank to drain back into the oil pan (with optional drain back system)