Bypass Kits & Manuals

See how AMSOIL products perform in the lab and in the field.

Engine oil has never been so clean

Bypass oil filter system filters clean beyond your expectations

The Bypass Oil Filter system uses the EaBP filter element for the best filtration protection against engine wear and oil degradation. Cleaning oil to the lowest ISO standards, the oil filter system installs in conjunction with the engine’s full-flow oil filter. The system operates on a “partial-flow” basis draws approximately 10 percent of the oil pump capacity at any time. The filter element (EaBP) traps soot and extremely small contaminants down to 2 microns with 98.7% efficiency. Oil is filtered several times an hour, sending “analytically clean” continuous oil back to the engine.

AMSOIL Spin-On By-Pass FilterAll engines operate in much the same fashion. The oil pump pulls engine oil from the sump to the top of the engine, lubricating each moving part via small oil galleries. High-quality, clean motor oil is key to preventing wear, reducing friction resistance, preventing sludge buildup, and keeping temperatures within normal operating range. But a standard oil filter media often can’t perform at a standard that protects your engine fully. However, a bypass kit offers filtration that can’t be beat.

Many truck and equipment manufacturers now install a bypass filter from the factory. For those that don’t, an AMSOIL Bypass Kit can be installed that fits your vehicle and its lubrication requirements. Whether you’re interested in extending the intervals between oil changes or simply discovering how to clean engine oil the best for dependable machinery, a bypass filter offers exceptional filtration with benefits that include:

  • Improved oil flow
  • Easier access to oil filter replacements
  • Oil that protects better against wear
  • Filtration down to 2 microns
  • Reduced oil consumption since clean oil seals piston rings better.

Why commercial businesses buy AMSOIL Ea®Bypass filtration

Save money on oil filter bypass kits, replacement oil filters, and AMSOIL lubricants by creating a commercial account today. Regardless of what industry you’re in – farming, industrial, construction, trucking, or others – you’ll have access to premium oil, oil filtration, lubrication, and related products at a discounted rate with a Commercial Account.

Every installation has the flexibility to install the filter mount wherever it makes the most sense.

Tips to install your bypass filter kit

Selecting the right oil filter bypass kit is the first step. AMSOIL offers specialized kits for Ford 6.0L, 6.4L, and Ford 6.7 Powerstroke applications, the 6.7 Cummins engine, as well as GM 6.6L Duramax diesel engines. Most engines have the option of either a single or a dual remote bypass filter system. For all other applications including gas-powered engines, a universal oil filter bypass kit is available. 

Attach the filter mount in a location that is protected from road debris and can be accessed easily for filter changes. Route hoses away from sharp or hot components and free from sharp bends. 

Fill the bypass filter with oil prior to starting the engine after installation, and watch the oil pressure when it is started. Check for loose fittings and leaking connections. 

Should you desire to take samples for oil analysis, the optional petcock kit makes drawing oil samples easier than you could dream. 

The best types of oil filters to use with the AMSOIL bypass filter kit are EaO oil filters, available from AMSOIL along with the lubricants you need to ensure long-lasting performance.

Mark Nyholm, Mechanical Engineer, Product Manager – Heavy Duty of AMSOIL INC.,

See how to install the AMSOIL Bypass Filter System. Mark Nyholm demonstrates two different installations.

Ford 6.7L Power Stroke

RAM with a 6.7L Cummins engine

Single Bypass System

(up to 6.0 gallon oil sump with EaBP110 element)

Single Bypass kits can use the adapter block for easy access to high pressure oil supply and low pressure return. See “Bypass Kit Manuals and Parts List” for options.

Optional Bypass Filter Sizes

  • BP90 (height 7.5 in.)
  • BP100 (height 6.0 in.)
  • BP110 (height 10.5 in.)

Always use the largest filter elements when possible for maximum filtration capacity. “Optional” smaller elements can be used to accommodate confined space installation.

Dual Bypass System

(up to 6.0 gallon oil sump with EaBP110 element)

Dual Bypass “image” shown with cutaway view of the engine’s full-flow filter. The dual mount kit will relocate the engine’s full flow filter for easy filter replacement access .

Optional “Full-Flow” Filter Sizes

EaO Full-flow filters will fit any “Dual Mount System” (excluding Heavy Duty BMK22).

Always Select the largest filter when possible. Optional smaller filters sizes can be used when space is limited for installation and filter change service.

  • EaO26 (height 6.77 in.)
  • EaO15 (height 5.37 in.)
  • EaO42 (height 3.75 in.)

Optional “Bypass” Filter Sizes

  • BP90 (height 7.5 in.)
  • BP100 (height 6.0 in.)
  • BP110 (height 10.5 in.)

When selecting “Dual Bypass” kits for specific engines/ vehicle type, AMSOIL Bypass kits include an adapter block for high pressure oil supply and low pressure return. Adapter blocks can be purchased separately.

Choose AMSOIL Ea® Bypass filter size by engine oil sum capacity

Match you engine oil sump capacity to the system kit

AMSOIL Kit Ea® BP Filter Element Applications Additional oil needed for system lines
and BP filter(s)
Engine
Sum Capacity
Single Remote:
BMK21, BMK31, BMK32, BMK33, BMK34
Dual Remote:
BMK23, BMK26, BMK27, BMK28
BP90 pleasure vehicles,
1/2 – 1 ton trucks and small commercial engine
1.0 qt. w/ BP90 up to 15 qt./ 3.75 gal.
BP100 1.5 qt. w/ BP100 up to 18 qt./ 4.5 gal.
BP110 2.0 qt. w/ BP110 up to 24 qt./ 6.0 gal.
.
DUAL-GARD®
Heavy-Duty
BMK22 (only)
EaBP90
(2 ea.)
large trucks, construction, farm and industrial equipment 2.0 qt. w/ 2ea. BP90 up to 7.5 gal.
EaBP100
(2 ea.)
3.0 qt. w/ 2ea. BP100 up to 9 gal.
EaBP110
(2 ea.)
4.0 qt. w/ 2ea. BP110 up to 12 gal.
.
Single Heavy-Duty
BMK30 (only)
EaBP120 large trucks, construction, farm and industrial equipment 4.0 qt. w/ BP120 up to 15 gal.
for each BMK30 system installed

AMSOIL Bypass oil kits for large oil sumps

  • The DUAL-GARD® system links two filter elements together on one mount for oil sum capacities of 7.5 -to- 12 gallons.
  • Heavy-Duty Bypass system for on- and off-road applications uses a single bypass filter for heavy-duty gasoline and diesel engine oil sumps up to 15 gallons. The BMK30 system can be plumbed in series for oil sumps larger than 15 gallons.

BMK22 system includes manifold, mounting hardware, hose and hose fittings. Requires two (2) filters.

Customer Review

BMK22
Universal Heavy-Duty Dual-Guard®


Up to 12 gal. oil sump

System can use optional filter element sizes

  • EaBP90
  • EaBP100
  • EaBP110

Note: Optional filter sizes can be used with this system. Choose smaller filter sizes where mounting space is limited.

  • BP90 (height 7.5 in.)   -max oil sum capacity up to 7.5 gals.
  • BP100 (height 6.0 in.)  -max oil sum capacity up to 9 gals. 
  • BP110 (height 10.5 in.)  -max oil sum capacity up to 12 gals.

BMK30 system includes manifold, mounting hardware, hose, hose fittings and the EaBP120 filter.

Customer Review

BMK30
Heavy-Duty Universal Single


Up to 15 gal. oil sump

For all heavy-duty diesel applications, including Class 6, 7 and 8 heavy-duty trucks, off-road equipment, buses, generators, marine engines, logging and agricultural equipment.

This bypass filtration system can be plumbed in series for oil sumps larger than 15 gallons.

Note: Only filter size BP120 is used with this system

  • EaBP120 (height 12.1 in.)  -max oil sump capacity up to 15 gallons per filter.
CANADA Kit Price Check Single Remote DUAL-GARD®
Heavy-Duty Universal Single BMK30
DUAL-GUARD® (dual filter) BMK22
United States Kit Price Check Single Remote DUAL-GARD®
Heavy-Duty Universal Single BMK30
DUAL-GUARD® (dual filter) BMK22

Dual-Remote kits to fit pickups and buses

BMK23 Universal Dual Remote

Includes manifold, mounting hardware, hose and hose fittings.
Note: Spin-on adapter, EaO26 full-flow filter and EaBP bypass oil filter each sold separately.

Customer Review

BMK26 Ford 7.3L Dual Remote System

Includes manifold, mounting hardware, hose, hose fittings, spin-on adapter, EaO26 full-flow oil filter and EaBP100 Bypass Filter.

Customer Review

BMK27 GM 6.6L Dual Remote System

Includes manifold, mounting hardware, hose, hose fittings, spin-on adapter, EaO26 full-flow oil filter and EaBP100 Bypass Filter.

Customer Review

BMK28 Ford 6.7L Dual Remote

Includes manifold, mounting hardware, hose, hose fittings, spin-on adapter, EaO26 full-flow oil filter and EaBP100 Bypass Filter.

Customer Review

Single-Remote Kits to fit pickups and buses

BMK21 Universal Single Remote

Includes manifold, mounting hardware, hose and hose fittings. EaBP Bypass Oil Filter sold separately.
Note: EaBP120 filter elements will not work with this system.

Customer Review

BMK31 Ford 6.0L/6.4L Single Remote

This system connects to the engine through the filter housing and oil fill cap.
Includes manifold, mounting hardware, EaBP90, hose and hose fittings.

Customer Review

BMK32 GM 6.6L (2001 – 2016) Single Remote

This system connects to the engine through the filter housing and oil fill cap.
Includes manifold, mounting hardware, EaBP90, hose and hose fittings.

Customer Review

BMK33 Ford 6.7L (2011 – Current) Single Remote

This system connects to the engine through a full-flow filter adapter and oil fill cap.
Includes manifold, mounting hardware, EaBP90, hose and hose fittings.

Customer Review

BMK34 Cummins 5.0 / 5.9L / 6.7L Single Remote

This system connects to the engine through an oil pressure port and oil fill cap.
Includes manifold, mounting hardware, EaBP90, hose and hose fittings.
Note: Installation on Nissan’s 5.0L Cummins engine requires adapter BK1104 sold separately.

Customer Review

FORD® Bypass filter kit

* will not fit FORD E-Series Vans and Bluebird Buses w/6.0L Diesel Engine (2004-2010). Use the Universal Kit

CANADA Kit Price Check Single Remote Dual Remote
FORD 7.3L BMK26
FORD 6.7L (2011 – Current) BMK33 BMK28
FORD 6.4L BMK31
FORD 6.0L * BMK31
Alternate Applications Include Gasoline Engine
Universal kit for FORD engines not listed BMK21 BMK23
United States Kit Price Check Single Remote Dual Remote
FORD 7.3L BMK26
FORD 6.7L (2011 – Current) BMK33 BMK28
FORD 6.4L BMK31
FORD 6.0L* BMK31
Alternate Applications Include Gasoline Engine
Universal kit for FORD engines not listed BMK21 BMK23

Chevrolet/ GMC® Bypass filter kits

CANADA Kit Price Check Single Remote Kit Dual Remote Kit
Chevrolet/GMC Duramax  6.6L  (2001 – 2019) BMK32 BMK27
Alternate Applications Include Gasoline Engine
Universal kit for Chevrolet/ GMC engines not listed BMK21 BMK23
United States Kit Price Check Single Remote Dual Remote
Chevrolet 6.6L Duramax (2001 to 2019) BMK32 BMK27
Alternate Applications Include Gasoline Engine
Universal kit for Chevrolet/ GMC engines not listed BMK21 BMK23

Dodge RAM® Bypass filter kits

* AMSOIL does not recommend any Dual Remote Kits for Dodge RAM Pickup of any year.

CANADA Kit Price Check Single Remote Dual Remote
Cummins 5.0/ 5.9/ 6.7L (2004 – current) BMK34
Alternate Applications Include Gasoline Engine
Universal kit for Dodge engines not listed BMK21 * BMK23
United States Kit Price Check Single Remote Dual Remote
Cummins 5.0/ 5.9/ 6.7L (2004 – current) BMK34
Alternate Applications Include Gasoline Engine
Universal kit for Dodge RAM engines not listed BMK21 * BMK23

Nissan® Bypass filter kits

* AMSOIL does not recommend any Dual Remote Kits for Diesel Nissan Pickup of any year.

CANADA Kit Price Check Single Remote Dual Remote
Nissan 5.0L BMK34
Alternate Applications Include Gasoline Engine
Universal kit for Nissan engines not listed BMK21 * BMK23
United States Kit Price Check Single Remote Dual Remote
Nissan 5.0L BMK34
Alternate Applications Include Gasoline Engine
Universal kit for Nissan engines not listed BMK21 * BMK23
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