Boundary Dodge Hemi Oil Pump Gears (HEMI-OPG) - 2003-2010 Dodge / Chrysler / Jeep 5.7L & 6.1L Gen III Hemi

Gen III Hemi engines are tough, but when you start adding RPM, boost, or track abuse, the factory oil pump gears can become a critical weak point. Boundary HEMI-OPG gears are designed to fortify your oiling system, giving your 5.7L or 6.1L Hemi the reliability and flow control it needs to survive high-demand driving.

Every set is manufactured in Boundary’s Dallas, Texas facility from quenched-and-tempered chromoly billets, creating an incredibly strong, wear-resistant core. After precision machining, the gears receive Boundary’s ColdFlow surface hardening and a mirror finish to cut friction and boost efficiency. Advanced porting and a race-inspired, symmetrical-tooth gerotor design increase high-RPM flow and pressure while eliminating traditional stress risers. Each inner and outer gear pair is matched, surface-ground, and fully inspected with a blueprinting report—proven stable at 9,000+ RPM and trusted in high-horsepower Hemi builds.

Features

• Advanced porting improves oil flow and pressure at high RPM
• Mirror-finished and ColdFlow surface-hardened for reduced friction and long wear life
• Surface-ground for precise fitment and consistent performance
• Quenched-and-tempered chromoly core for extreme strength
• Inner and outer gears included and machined as matched sets
• Race-inspired gerotor design enhances flow efficiency and durability
• Symmetrical tooth profile removes weak spots for maximum reliability
• Hand, machine, and hardness inspected with included blueprinting report

Fitment

- 2003–2010 Dodge Hemi Gen III OHV 5.7L
- 2003–2010 Chrysler Hemi Gen III OHV 5.7L
- 2003–2010 Jeep Hemi Gen III OHV 5.7L
- 2003–2010 Dodge / Chrysler / Jeep Hemi Gen III OHV 6.1L

CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov