Boundary 16-21 Honda Civic Si Billet Oil Pump Gear Honda L15 I4 1.5L Billet Gear

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2016-2021 Honda Civic Base/Si Billet Oil Pump Gears by Boundary Pump Division

Boundary oil pump gears are 100% manufactured in our Dallas, Texas production facility. We start by quenching our chromoly billets from extreme heat and then temper it to tough indestructible core. After machining we apply our ColdFlow surface hardening process and complete it to a Mirror Finish. What does all this give you? It gives you a pump with stability over 9000 RPM, proven in excess of 600whp, with higher efficiency, less friction, and backed by one of the industries best warranty’s.


  • Mirror Finished and Surface Hardened
  • Surface Ground gears for the ultimate in fitment and performance
  • Indestructible chromoly core
  • Inner and outer gear machined in matched sets
  • Our own race inspired gerotor design for flow and strength
  • Each set hand, machine, and hardness inspected with Blueprinting Report


  • Pump Stability Over 9000rpm
  • Proven In Excess Of 600whp
  • Higher Efficiency & Less Friction


  • 2016 - 2021 Honda Civic 1.5T
  • 2017 - 2021 Honda Civic Si

What's In The Box?

  • 1 - Boundary Pump Division Oil Pump Gear

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