Boundary B18-OPG Billet Oil Pump Gear for Honda B18 1.8L 94-01 Acura Integra

Vehicle Fitment

• 1994-2001 Acura Integra GS-R, B18C1
• 1994-2001 Acura Integra LS, B18B1
• 1997-2001 Acura Integra Type R, B18C5

Fitment Notes

• Engine-specific part designed for the Honda B18 1.8L I4 architecture
• Also commonly used in B18 engine swap applications
• Confirm your specific B18 variant (B18A1/B18B1/B18C1/B18C5) uses a compatible oil pump housing before ordering

Features

• Machined from quenched and tempered chromoly billet for an indestructible core
• ColdFlow surface hardening process for long-term durability
• Surface-ground gears for precise fitment and performance
• Mirror-finished for reduced friction and higher efficiency
• Stable oil pump performance over 9,000 RPM
• Proven in applications exceeding 1,000whp
• 100% manufactured in Boundary's Dallas, Texas production facility
• Backed by one of the industry's best warranties

Specifications

• Material: Chromoly billet
• Surface treatment: ColdFlow hardened, mirror finish
• RPM rating: Stable over 9,000 RPM
• Power rating: Proven beyond 1,000whp

Included Components

• 1x Boundary Billet Oil Pump Gear

Product Description

The Boundary B18-OPG is a billet oil pump gear built for the Honda B18 1.8L I4, most commonly found in the Acura Integra GS-R, LS, and Type R. Machined from quenched and tempered chromoly billet, then ColdFlow surface hardened to a mirror finish, it delivers stable oil pressure well past 9,000 RPM with less friction than the factory gear.

Proven in applications exceeding 1,000whp, it's built for serious high-RPM and high-horsepower B18 builds, whether in a stock Integra or an engine swap application. 100% manufactured in Boundary's Dallas, Texas facility and backed by one of the industry's strongest warranties.