Boundary VQ-S2-DE-BBP-M Nissan VQ35DE High-Flow Oil Pump Assembly with Billet Back Plate MartenWear Treated

The Boundary VQ-S2-DE-BBP-M is a fully assembled, high-flow oil pump engineered for the Nissan VQ 3.5L DE engine. This top-tier variant combines Boundary's billet gear assembly, high-flow billet steel back plate, and their proprietary MartenWear heat treatment for maximum durability in high-performance and race applications.

Built around a genuine Nissan OEM housing, the pump features a mirror-finished billet oil pump gear set that delivers 30% more oil flow than OEM or the hi-rev pump, providing superior lubrication across the entire RPM range. The included high-flow billet steel back plate features anti-cavitation properties, deeper porting, and 5th-axis finished ramps to maximize flow efficiency.

The MartenWear treatment is Boundary's proprietary in-house dual-stage heat treatment process applied to the exterior wear surfaces of the billet components. The result is a surface hardness of 620–720 Vickers (55–60 Rockwell C), delivering exceptional resistance to debris ingestion and wear — flow-tested wear-free at up to 12,000 RPM on Boundary's own bench.

Assembly Process & Quality Control:

• Pump is fully disassembled; all parts undergo ultrasonic cleaning, air blast, and hand inspection
• All internal surfaces are hand de-burred
• Industry-leading mirror-finished billet gear set installed
• Stainless Torx head fasteners replace OEM hardware
• All fasteners torqued to spec with Loctite applied to prevent backout or loosening
• Anaerobic sealant applied to critical areas to boost pump-up speed and reduce aeration
• Assembly lubricant applied to all critical surfaces for fast oil flow on initial startup
• Parts are blue-printed and shipped with a specification sheet

Adjustable Relief Valve Settings (Shims):

• 1 Shim: +10 PSI
• 2 Shims: +20 PSI
• 3 Shims: +30 PSI

This pump has been race-validated in multiple extreme-horsepower naturally aspirated and turbocharged applications, including the world record-holding naturally aspirated quarter-mile car of Nisformance. It is the definitive choice for VQ35DE builds demanding uncompromising oiling system reliability.