Boundary Pumps Honda B18 Billet Oil Pump Gearset

Boundary oil pump gears are 100 percent 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 1000whp, with higher efficiency, less friction, and backed by one of the industry's best warranties.

Oil Pump Gear Features

• 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

Part Number: B18-OPG

Application: Honda B18 I4 1.8L FITS ONLY ORBIT PUMP

Available with MartenWear dual-stage heat treat for operation over 9,000 RPM.