420A Oil Pump Gears


Billet Oil Pump Gear Mitsubishi/ Chrysler 420A Engine High Flow

SKU: 420A-OPG Categories: , , Tag:

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 a 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 900whp, with higher efficiency, less friction, and backed by one of the industry’s best warranties.


  • Mirror Finished and Surface Hardened
  • Surface Ground gears for the ultimate in fitment and performance
  • Indestructible core
  • Inner and outer gear set included
  • Unique race-inspired gerotor design
  • Symmetrical tooth profile eliminates the gears weak spot making our gear sets indestructible
  • Each set hand, machine, and hardness inspected with Blueprinting Report

Part Number: 420A-OPG FITS:

  • Mitsubishi Eclipse (1995-1999) – GS models.
  • Eagle Talon (1995-1998) – ESI models.
  • Plymouth Neon (1995-1999) – Highline, Sport, and EX models.
  • Dodge Neon (1995-1999) – Base, Highline, Sport, R/T, ACR, and ES models.
  • Dodge Avenger (1995-2000) – Base and ES models.
  • Chrysler Sebring (1995-2000) – LX and LXi Coupe models.


Weight 1 lbs
Dimensions 8.5 × 6 × 1 in