Click to zoom in
Protect High-RPM Oiling With MartenWear Treated Billet Gears
The Boundary L15B7-OPG-M is a billet oil pump gear set built for the Honda L15B7 1.5L turbocharged four-cylinder engine. The L15B7-OPG-M uses MartenWear dual-stage heat treatment so the gears can hold up to sustained operation over 9,000 RPM without the wear that limits a stock or standard billet gear set.
Key Features
- Billet chromoly core for indestructible durability (Boundary L15B7-OPG-M)
- Mirror finished and surface hardened for reduced friction
- Surface ground gears for precise fitment and performance
- Inner and outer gears machined and matched as a set
- Race-inspired gerotor design for improved oil flow and strength
- MartenWear dual-stage heat treatment rated for operation over 9,000 RPM
Fitment
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 2016-2021 | Honda | Civic 1.5T | L15B7 engine, MartenWear treated gear set |
| 2017-2021 | Honda | Civic Si | L15B7 engine, MartenWear treated gear set |
Specifications
| Detail | Value |
|---|---|
| Part Number | L15B7-OPG-M |
| Engine Application | Honda L15B7 1.5L turbocharged I4 |
| Core Material | Chromoly |
| Heat Treatment | MartenWear dual-stage |
| RPM Rating | Rated for sustained operation over 9,000 RPM |
| Gear Design | Matched inner and outer gerotor set |
What's Included
- One Boundary L15B7-OPG-M inner and outer oil pump gear set
- Blueprinting inspection report
About Boundary
Boundary builds billet oil pumps and pump gears for engines under sustained high-RPM and high-load conditions. Each gear set is hand, machine, and hardness inspected before it ships, and the MartenWear treatment line extends that durability further for engines pushed beyond stock RPM limits.
Related Parts
FAQ
What upgrade does this gear set add over the factory oil pump gear?This Boundary oil pump gear set upgrades the factory gear in the Honda L15B7 1.5L turbocharged engine used in the 2016-2021 Civic 1.5T and 2017-2021 Civic Si. The MartenWear dual-stage heat treatment and chromoly core support sustained operation above 9,000 RPM, and each set ships with an inspection report.
What is the difference between this and the standard billet gear set?The M designation adds the MartenWear dual-stage heat treatment rated for sustained operation over 9,000 RPM.
Does this replace the entire oil pump?No, this is a gear set upgrade for the existing oil pump housing.
What vehicles use the L15B7 engine?The L15B7 is used in the 2016-2021 Honda Civic 1.5T and 2017-2021 Civic Si.
Is a blueprinting report included?Yes, each gear set includes an inspection report covering hand, machine, and hardness checks.
Do I need this gear set for a stock daily driver?It is intended for builds operating at higher RPM than stock, though it can be run on any L15B7 application.
What material is the gear core made from?The core is machined from chromoly for durability.
Is professional installation recommended?Yes, professional installation is recommended since it requires oil pump disassembly.
Installation Instructions
- Drain the engine oil and remove the oil pan and oil pump assembly.
- Disassemble the oil pump housing to access the gear set.
- Remove the factory inner and outer gears from the pump housing.
- Install the Boundary L15B7-OPG-M inner and outer gear set in matched orientation.
- Reassemble the oil pump housing and torque all fasteners to specification.
- Reinstall the oil pump and oil pan with new gaskets as needed.
- Refill with fresh engine oil and a new filter.
- Start the engine and confirm oil pressure before returning to normal use.
Boundary
Boundary engine oiling parts and accessories for Ford Coyote, GT500, F 150, LS, HEMI, Honda K series, Subaru FA, Toyota 2JZ, Nissan VQ, RB, VK, Honda L15 and Mazda BP engines are stocked at Black Ops Auto Works. Shop billet oil pump gears, complete oil pumps, vane ported pump assemblies, high volume upgrade kits, billet back plates, crank timing sprockets and treated gear sets. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 69 Boundary SKUs with real fitment data and clear product specifications. What This Boundary Collection Covers Boundary develops billet oil pump gears, complete oil pump assemblies, and rotating assembly components for high output engine builds. These parts are selected by exact engine generation, pump housing, crank drive, oiling requirements, and intended rpm or power level. The catalog includes direct upgrades for domestic, import, turbocharged, superchar...
View Boundary Products
Engine
Engine parts and engine bay upgrades for Dodge, Jeep, RAM, Chrysler, Chevrolet, Ford, Toyota, Nissan, Subaru, and Honda vehicles are stocked at Black Ops Auto Works. Shop oil catch cans, supercharger pulleys, thermostats, radiators, cooling parts, throttle bodies, intake manifolds, headers, ignition coils, spark plugs, sensors, gaskets, fuel pumps, valve covers, engine covers, billet cap covers, and full engine bay dress-up parts for HEMI, Hellcat, Trackhawk, Redeye, Demon, Scat Pack, RAM TRX, LS, LT, Coyote, EcoBoost, K-Series, and 2JZ builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 14,298 engine SKUs across performance, cooling, oil control, ignition, and appearance categories. What This Category Covers The Engine collection combines OEM-replacement engine service parts with performance aftermarket upgrades for supercharged, turbocharged, and naturally aspirated builds...
View Engine Products
Oil
Oil system parts for supercharged HEMI, LS and LT platforms, diesel trucks, and daily drivers are stocked at Black Ops Auto Works. Shop oil catch cans, air oil separators, oil filters, oil pans, oil pumps, oil pickups, dipsticks, drain plugs, and motor oils for Hellcat, Redeye, Demon, Jeep Trackhawk, Ram TRX, Corvette, Camaro, CTS-V, Mustang, F-150, and Silverado applications. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 1,432 oil system SKUs across catch cans, filtration, and service hardware. What This Category Covers Oil system parts manage crankcase ventilation, filtration, and lubrication delivery throughout the engine. This collection spans oil catch cans, oil separators, air oil separators, oil filters, oil pans, oil pumps, oil pickups, dipsticks, drain plugs, oil baffles, and motor oils for street, track, towing, and high horsepower applications. Crankcase Ventilation...
View Oil Products
Oil Pumps
Performance oil pumps for performance engines, street builds and race combinations are stocked at Black Ops Auto Works. Shop high-volume oil pumps, billet oil-pump assemblies, billet gears, pickup-equipped pumps, oil-pump drives and related hardware for Ford, GM, Subaru, Toyota, Nissan and Honda engines. Oil-system parts must match the engine family, pan depth, pickup location, crankshaft and intended oiling demand. Black Ops Auto Works carries 100 oil-pump SKUs for engine builders who need catalog-specific components rather than generic transfer equipment. What This Collection Covers This collection covers engine lubrication components that supply pressurized oil to bearings, valvetrain and related passages. It includes complete pumps, billet oil-pump gears, drive gears, pickup assemblies, pump shafts and high-volume race parts. Built for verified applications Use the fitment details and product specifications on each listing to confirm the correct application before ordering. ...
View Oil Pumps Products