BMK30 Installation and Servicing Instructions
Note: For fitting suggestions and fitting locations, please reference the BMK30 Fittings List
Heavy-Duty Remote Filtration System and Ea® Bypass
Filter combine to provide outstanding oil filtration efficiency
Bypass oil filtration introduces a secondary filter with the purpose of eliminating
nearly all contaminants from engine oil. Bypass filters have high capacities and
eliminate much smaller particles than full-flow filters, including soot. Bypass filters
reduce engine wear through high filtering efficiency, which means they have higher
restriction and must be used in conjunction with a full-flow filter.
Bypass filters operate by filtering oil on a "partial-flow" basis. They draw
approximately 10 percent of the oil pump's capacity at any one time and trap the
extremely small, wear-causing contaminants that full-flow filters can't remove. Bypass
filters have a high pressure differential, causing the oil to flow through them very
slowly and allowing for the removal of smaller contaminants. It is called bypass
filtration because the oil flows from the bypass filter back to the sump and bypasses
the engine. This continual process eventually cleans all the oil in the system, reduces
long-term wear and can dramatically extend the life of the engine.
AMSOIL Heavy-Duty Bypass System
The AMSOIL Heavy-Duty Bypass System includes the mount, mounting hardware,
15 feet of hose, hose fittings, installation instructions and Bypass Filter (EaBP120).
Available separately, the oil sample valve (BK30) eases the process of collecting
oil samples. The system provides most of the necessary fittings, except the fitting
required to pull pressurized oil from the engine and the return fitting to return oil to the
sump. Other parts and fittings can be purchased from any hydraulics or heavy-duty
High-Quality, Durable Construction
The Heavy-Duty Bypass Filtration System is constructed of high-quality cast
aluminum with a steel filter spud that has been thoroughly tested in on-road and
severe off-road service. The mount is finished with a thick layer of powder-coated
paint to provide maximum resistance to the degrading effects of road salt, debris and
General Installation Guidelines
Determine the location of a pressurized oil port on the engine.
Pressure ports are usually found on the main oil galley or in
close proximity to the full-flow filter head assembly. The oil flow
from this source should be plumbed into the inlet side of the
filter mount. The outlet will be directed to a low-pressure point
on the engine, typically a port located at or near the oil pan.
Detailed instructions are included with the Heavy-Duty Bypass
AMSOIL Ea® Heavy-Duty
The AMSOIL Ea Heavy-Duty
Bypass Filter (EaBP120) features
a proprietary media that removes
98.7% of all contaminants two
microns or larger (ISO 4548-12),
and provides superior soot-removal
efficiency. It comes complete with
a marine powder-coated finish
for long filter life, even in extreme
Increased Oil Capacity
The Ea Heavy-Duty Bypass Filter increases the fluid system
capacity by approximately one gallon, depending on length of
hose and distance the filter is mounted from the engine. The
additional oil and extended filtration life provide improved
oil cooling and ensure equipment constantly runs on highly
filtered oil. Engine efficiency is increased, providing extended
Extended Service Life
The Ea Heavy-Duty Bypass Filter offers long service life.
Do not exceed the limits listed in the chart below. Extended
oil drain intervals should always be accompanied by an oil
The Ea Heavy-Duty Bypass Filter was designed for heavy-duty
applications. Its robust construction and superior filtration
performance provide maximum protection over extended
drain intervals, reducing downtime, increasing equipment life
and saving money.
- Significantly extended engine life
- Efficient removal of small particles and soot
- Removal of particles two microns and larger
- Increased engine efficiency
- Improved oil cooling
- Helps maintain oil viscosity
- Reduces unscheduled downtime
- Reduces operational costs
- Increased fluid system capacity
- Increased filtration capacity and life
- Environmentally friendly
- Extended drain intervals
The AMSOIL Heavy-Duty Bypass System and Ea Heavy-Duty
Bypass Filter provide maximum filtration performance for
virtually all heavy-duty gas and 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 larger applications with large sumps. For more
information about the installation of one or more heavy-duty
bypass systems on your application, contact AMSOIL
Technical Services at (715) 399-TECH.
AMSOIL PRODUCT WARRANTY
AMSOIL products are backed by a Limited Liability Warranty.
For complete information visit www.amsoil.com/warranty.aspx.
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countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are
developed by AMSOIL for use in the applications shown.