Dual bypass oil filter system

Table of Contents Show

Oil Filter Thread Adapters
How effective are bypass oil filter systems?
What are the disadvantages of the bypass filter?
What is the difference between full flow and bypass oil filter?
What is the purpose of the oil filter bypass?

AMSOIL Bypass Kits Made Easy

Buy and Pricing

See Bypass Installation Samples

Typical Installation Diagram for BMK23

Click on diagram for larger image
(Opens a new browser window)

See the Bypass Replacement Parts Lists

PRODUCT DESCRIPTION
The Ea Bypass Oil Filter (EaBP) provides the best possible filtration protection against wear and oil degradation. Working in conjunction with the engine’s full-flow oil filter, the AMSOIL Ea Bypass Filter operates by filtering oil on a “partial-flow” basis. It draws approximately 10 percent of the oil pump’s capacity at any one time and traps the extremely small, wear-causing contaminants that full-flow filters can’t remove. The AMSOIL Ea Bypass Filter typically filters all the oil in the system several times an hour, so the engine continuously receives analytically clean oil.

Higher Efficiency
AMSOIL EaBP Filters have an efficiency of 98.7 percent at two microns. At normal operating RPMs the EaBP Filter will filter all of the oil in a typical five quart sump in less than 10 minutes.

Superior Construction
The superior construction of AMSOIL EaBP Filters provides better sealing and increased longevity along with superior corrosion resistance. AMSOIL EaBP Filters have a marine powder coated exterior; and their zinc-dichromate base plates increase rust protection. EaBP Filters have a nitrile HNBR gasket and an orange silicone anti-drain valve. The two stage pleated and layered cellulose/full synthetic media has an efficiency rating of 98.7 percent at two microns.

Longer Lasting
When used in conjunction with AMSOIL motor oil and an AMSOIL EaO or Donaldson Endurance™ filter, the EaBP90, 100 and 110 Filters should be changed every other full-flow filter change up to 60,000 miles or one year whichever comes first. When used with other brands of motor oil or full-flow filters, the EaBP Filter should be changed every other full-flow filter change. AMSOIL recommends using oil analysis when extending oil drain intervals.

AMSOIL recommends changing the EaBP120 every other full-flow filter change up to 90,000 miles or one year whichever comes first. Extended oil drain intervals should always be accompanied by an oil analysis program.

Increased Oil Capacity
The increased fluid system capacity and filtration life provides improved oil cooling and ensures that equipment constantly runs on clean oil. Engine efficiency is increased, providing extended engine life.

Soot Removal
AMSOIL has designed a high-efficiency bypass filter element that is also a soot removal device. AMSOIL Ea Bypass Filters use a synthetic/cellulose sandwiched media. The inner layer of the element is composed of a highly efficient cellulose media covered with a full synthetic media outer layer. These filters remove 39 percent of soot contaminants less than one micron. Soot removal efficiency increases approximately 10 to 14 percent when the EaBP Filter is used in conjunction with a standard full-flow filter.

Bypass Filtration Benefits

Dramatically Extended Drain Intervals
Improved Oil Cooling
Increased Filtration Capacity and Life
Increased Fluid System Capacity
Efficient Small Particle and Soot Removal
Significantly Extended Engine Life
Equipment Constantly Runs on Clean Oil
Increased Engine Efficiency
Remove Particles Less Than One Micro

Oil Filter Thread Adapters

THREAD ADAPTERS
If your equipment uses this AMSOIL Filter	This is the thread used on that equipment
EAO11	M22 x 1.5
EAO15	3/4 - 16 UNF
EAO17	M22 x 1.5
EAO23	M18 x 1.5
EAO24	13/16 - 16UNS
EAO26	3/4 - 16 UNF
EAO34	3/4 - 16 UNS
EAO38	3/4 - 16 UNS
EAO42	3/4 - 16 UNF
EAO52	13/16 - 16UNS
EAO59	13/16 - 16UNS
EAO64	13/16 - 16UNS
EAO80	1 - 16UNF
EAO98	1 - 16UNF
EAO99	1 1/2 - 16UN
EA15K09	3/4 - 16 UNS
EA15k12	M20 x 1.5
EA15k13	M20 x 1.5
EA15K20	M20 x 1.5
EA15K29	M18 x 1.5
EA15K32	13/16 - 16UNS
EA15K50	M22 x 1.5
EA15K51	3/4 - 16 UNS

ADAPTERS
3/4" - 16	BK295
13/16" - 16	BK296** or BK302
18mm x 1.5mm	BK297
20mm x 1.5mm	BK298
22mm x 1.5mm	BK299
22mm x 1.5mm (2008-Present Chevrolet 1500 & 2500 gas engines)	BK310
1" - 16 (Cummins)	BK300
1-1/2" - 16 (Power Stroke 7.2 L)	BK301
13/16" - 16 (Duramax 6.6 L)	BK302
** Please contact Technical Services to discuss your application for the correct adapter. 800-579-0580

Buy and Pricing

How effective are bypass oil filter systems?

The high-efficiency AMSOIL Bypass Filter element is 98.7% effective at removing particles down to 2 microns, helping extend engine life. It is also a very effective soot-removal device.

What are the disadvantages of the bypass filter?

Answer: Because of that, the filter cannot trap smaller particles below 30 microns. Many contaminants are much smaller, even less than 5 microns. Because full-flow filters can't capture those contaminants, the oil will degrade, requiring frequent drains.

What is the difference between full flow and bypass oil filter?

Bypass oil filters take about 10 percent of the oil pumped from the sump, filter it and then return it to the sump while the remaining 90 percent is delivered to the lubricated components. Full-flow oil filters filter 100 percent of the oil pumped before it continues on to the lubricated surfaces.

What is the purpose of the oil filter bypass?

The bypass valve – otherwise known as a pressure relief valve – is an integral part of the oil filter. The valve is designed to open when the oil filter becomes clogged or when the oil is too thick. This allows the oil to bypass the filter through a center tube.