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Boundary Engineering

Boundary Engineering VQHR VHR Oil Pump Billet Back Plate

Regular price $299.99 USD
Regular price $329.99 USD Sale price $299.99 USD
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Boundary Engineering VQHR VHR Oil Pump Billet Back Plate

Our Billet pump covers use advanced CFD simulation and exacting 3D precision milling to create a blend of engineering and manufacturing that produces less leak by, less aeration, less cavitation, and more high RPM flow.
  • Plate is cut from billet steel, 5 times as rigid as aluminum, reducing blow by and air ingestion
  • Plates feature our MartenWear surfaces for long life
  • Increased volume and reduced foam increases engine bearing life
  • Utilizes surface grinding to create the ultimate pump seal
  • Nissan 350z 2007-2008 
  • Nissan 370z 2009 – 2020
  • Infiniti G37/Q40/Q50 (VHR equiped) 2009 – 2016
  • Nissan 2007-2008 Skyline
  • Infiniti G35 (HR equipped) 2007-2008

Boundary Engineering strives to provide custom, hand built oil pumps to survive the most punishing racing conditions.

Boundary was founded in 2003 and specialized in producing various metal goods for the automotive racing industry. As early as 2004 we began researching and understanding the complexities of manufacturing gear pumps commonly used in the automotive racing industry. In 2005 we launched our first gear products. Since then, we’ve sold thousands of high quality pumps. Our units are proudly used in engines producing up to 550hp/L with nothing but success.

Cutting Edge Technology
Boundary delivers cutting edge technology by using state of the art CNC milling and turning equipment for our products. Our high end, American made machining centers along with expert personnel, provide the accuracy required for inter-meshing gear pumps to function.

American Made
Boundary oil pump assemblies are manufactured in our in house facilities in Dallas, TX. It is this in house capability which gives us the consistency and quality that can’t be had elsewhere.

Increasing Focus
Our company focuses solely on lubrication systems. Unlike other manufacturers who “specialize” in a thousand things we specialize in one. Providing the most high quality lubrication equipment possible for your high performance needs.

Other Boundary Engineering Products available for any chassis/engine - if you dont see what you’re looking for please message us directly.  

We shop our competition - if you find a lower comprable price we will match or beat it - message for details! 

PROPOSITION 65 WARNING: These products may contain chemicals known to the State of California to cause birth defects or other reproductive harm. For more information visit