Boundary Nissan VQ VHR 3.5L/3.7L Oil Pump Assembly w/ Billet Back Plate

The Boundary VQ VHR oil pump uses a Nissan OEM housing with Boundary's mirror-finished billet oil pump gear. It offers an optional high-flow billet backplate for consistent operation above 7000 RPM. This pump is proven in extreme horsepower naturally aspirated and turbocharged applications, including a world-record-holding NA 1/4 mile car at 8000 RPM and an 8500 RPM, 900WHP supercharged VHR. It includes adjustable relief valve settings for high RPM pressure. Each assembled billet pump undergoes complete disassembly, ultrasonic cleaning, hand de-burring, uses a mirror-finished gear set, stainless Torx heads, fasteners torqued with Loctite, anaerobic sealant in critical areas, assembly lubricant, and blueprinting with a spec sheet. Shims can be added for increased PSI: +10 PSI per shim (up to 3 shims).