AMSOIL Bypass Oil Filtration Systems & Mounts

AMSOIL bypass oil filtration systems capture the fine, wear‑causing particles that standard full‑flow oil filters leave behind. By adding a high‑efficiency bypass filter and dedicated mount, you can keep oil cleaner longer, support extended oil drain intervals and help protect engines in diesel trucks, heavy‑duty equipment and high‑mileage vehicles.

ProEdge Lubricants, an Authorized AMSOIL Dealer, supplies complete AMSOIL bypass oil filtration systems, mounts and Ea® Bypass Oil Filters, along with guidance on choosing the right setup for your application.

How bypass oil filtration works

A bypass oil filtration system works in conjunction with your existing full‑flow oil filter:

  • A small amount of oil (about 10% of pump flow at any given time) is diverted from the pressurized oil circuit into a high‑efficiency Ea® Bypass Oil Filter.
  • The bypass element uses specialized media to remove extremely small contaminants – down to approximately 2 microns – that are typically too fine for a standard full‑flow filter to capture.
  • Cleaned oil returns to the crankcase, increasing total oil capacity and keeping the entire sump cleaner over time.

Key advantages of AMSOIL bypass filtration include:

  • Efficient small‑particle and soot removal.
  • Greatly increased filtration capacity and service life compared to a full‑flow‑only setup.
  • Oil that stays visibly cleaner for longer.
  • Help improving engine efficiency and supporting extended engine life.
  • Help extending oil drain intervals when used with AMSOIL synthetic motor oil and within AMSOIL and OEM recommendations.

AMSOIL Bypass Oil Filtration Systems & Mounts overview

AMSOIL offers a complete line of bypass oil filtration systems and mounts to fit popular turbodiesel pickups, heavy‑duty equipment and custom applications.

Shop AMSOIL Bypass Oil Filtration Systems & Mounts

Engine‑specific bypass systems (diesel pickups)

These kits are engineered for popular turbodiesel applications with model‑specific brackets, plumbing and detailed instructions:

  • Ford Power Stroke 6.0L / 6.4L single‑remote bypass system (BMK31) – Designed specifically for 2004–2010 Ford 6.0L and 6.4L diesel engines.
  • GM Duramax 6.6L single‑remote bypass system (BMK32) – Fits 2001–2016 GM 6.6L Duramax diesel engines.
  • Ford 6.7L single‑remote bypass system (BMK33) – Designed for 2011‑present Ford 6.7L diesel engines.
  • Cummins 5.0/5.9/6.7L single‑remote bypass system (BMK34) – Covers many 2004‑and‑newer Cummins 5.0, 5.9 and 6.7L engines.

For drivers who want both full‑flow and bypass filtration moved off the engine for easier access, AMSOIL also offers dual‑remote systems:

  • Ford 7.3L dual‑remote bypass system (BMK26) – For 7.3L Ford Power Stroke diesel engines.
  • GM 6.6L Duramax dual‑remote bypass system (BMK27) – For 2001–2019 GM 6.6L Duramax engines.
  • Ford 6.7L dual‑remote bypass system (BMK28) – For 6.7L Ford Power Stroke diesel engines.

All of these systems are built around the same core benefits:

  • Superior small‑particle filtration, including soot removal.
  • Increased filtration capacity and life.
  • Oil that constantly circulates through clean media.
  • Help increasing engine efficiency and life.
  • Help reducing overall maintenance costs.

(Exact coverage, mounting details and filter options are listed on each AMSOIL product page.)

Universal bypass systems & heavy‑duty kits

For custom installs, older engines or equipment where a model‑specific kit is not available, AMSOIL offers universal and heavy‑duty systems:

  • BMK21 – Universal Single‑Remote Bypass System

    • Mounts the Ea® Bypass Oil Filter on a remote bracket.
    • Connects to the engine through a pressurized oil port and returns oil to a low‑pressure location.
    • Ideal for light‑duty diesels, gas engines, hot rods and custom applications where space allows.

  • BMK23 – Universal Dual‑Remote Bypass System

    • Relocates both the full‑flow filter and bypass filter to a single dual‑filter mount.
    • Includes mount, hardware, hose and fittings.
    • Requires a spin‑on adapter matched to the engine’s filter thread and a separate full‑flow filter.
    • The EaBP120 bypass element is not compatible with this system; smaller EaBP sizes are used.

  • BMK30 – Heavy‑Duty Bypass System

    • Designed for heavy‑duty on‑ and off‑road equipment and larger diesel engines.
    • Provides high bypass flow capacity, improved oil cooling and efficient removal of fine particles and soot.

  • BMK22 – DUAL‑GARD® Bypass System

    • Dual‑element bypass system for large diesels and severe‑service applications.
    • Includes mount, hardware, hose and fittings.
    • Uses AMSOIL EaBP bypass filters (sold separately); EaBP120 is not compatible with this system.

Bypass filter mounts and replacement hardware

Bypass systems rely on robust filter mounts and fittings. AMSOIL makes it easy to service or update an existing system with dedicated mount assemblies and parts:

  • BK303 Filter Mount Assembly – Replacement filter mount for BMK21, BMK31 and BMK32 bypass systems.
  • BK305 Filter Mount Assembly – Replacement filter mount for the BMK30 heavy‑duty bypass system.
  • BK309 Filter Mount Assembly – Replacement mount used with BMK23, BMK26, BMK27 and BMK28 dual‑remote systems.
  • BK393 Filter Mount Assembly – Replacement mount for the BMK22 DUAL‑GARD bypass system.

Additional fittings, hoses, adapters, sample valves and hardware are available in the AMSOIL bypass filter parts list:

View the AMSOIL Bypass Filter Parts List

Ea® Bypass Oil Filters that work with these systems

All AMSOIL bypass systems and mounts are designed around the AMSOIL Ea® Bypass Oil Filter (EaBP series):

Shop AMSOIL Ea® Bypass Oil Filters (EaBP Series)

Features of the EaBP bypass elements include:

  • Efficient small‑particle and soot removal.
  • Increased filtration capacity and long service life.
  • Improved oil cleanliness that helps improve engine efficiency.
  • Help providing extended engine life.
  • Help extending oil drain intervals when used with AMSOIL synthetic lubricants and according to AMSOIL and OEM guidelines.

EaBP filters are available in multiple sizes (EaBP90, EaBP100, EaBP110, EaBP120). Each bypass system’s product page includes a table that lists:

  • Recommended EaBP filter size(s) for that mount or kit.
  • Whether the system includes a bypass filter in the box or requires a separate purchase.
  • Any size limits (for example, some systems specify that EaBP120 will not work due to physical constraints).

For precise filter selection, always refer to AMSOIL’s official fitment tables or contact ProEdge Lubricants for assistance before ordering.

Is a bypass system right for your engine or equipment?

A bypass oil filtration system is especially valuable if you:

  • Own a turbodiesel pickup used for towing, hauling or long‑distance driving.
  • Run over‑the‑road trucks, RVs, motorhomes or delivery vehicles that accumulate high mileage quickly.
  • Operate construction, agricultural or industrial equipment where downtime is costly.
  • Maintain high‑mileage engines you want to keep in service as long as possible.
  • Rely on extended drain intervals and want extra margin of protection and oil cleanliness.

Bypass systems are not limited to diesels; they can also be installed on many gasoline engines where space and oil‑routing options allow.

Installation and maintenance overview

Each AMSOIL bypass kit includes detailed, application‑specific instructions. In general:

  • The system taps a pressurized oil source using a port, adapter or tee fitting.
  • Oil flows through the Ea® Bypass Oil Filter on the remote mount.
  • Clean oil returns to a low‑pressure location such as a valve cover, oil fill, oil pan or dedicated return fitting.

Basic best practices:

  • Verify that you have safe, secure mounting space for the bypass mount and hoses.
  • Route hoses away from sharp edges, exhaust components and moving parts.
  • Follow the torque and thread‑sealant recommendations in the AMSOIL instructions.
  • Change the EaBP bypass element and full‑flow filter at the intervals recommended by AMSOIL for your application, or based on used‑oil analysis, and always stay within engine‑manufacturer recommendations.

For many vehicle owners, professional installation by a trusted shop or experienced technician is the best option.

How to order through ProEdge Lubricants (Authorized AMSOIL Dealer)

ProEdge Lubricants can help you:

  • Select the right bypass kit (engine‑specific or universal) for your vehicle or equipment.
  • Choose the correct EaBP bypass filter size and compatible mount.
  • Plan an installation that fits your space, routing and service requirements.

Use your preferred contact method on this site to request a bypass filtration consultation. When you’re ready to order online, use the links below to shop directly from AMSOIL while keeping your purchases connected to your Authorized AMSOIL Dealer: