background image

A. Getting started

1. Check all parts against the parts list and inspect for damage. 
2. Make sure you have the tools needed for the job.

Recommended tool list

Adjustable wrench 

Torque Wrench

Drill

7

16

9

wrench Side 

Cutter

5

16

9

drill bit

1

2

9

wrench

Utility knife

Center punch 

9

16

9

wrench

Adjustable filter wrench

Hammer

11

16

9

wrench

Drain oil pan

Vice

B. Filter selection

Any of the 3 different sizes of the AMSOIL Spin-On By-Pass Oil Filter elements may be
used with this mount. Select the element size according to your vehicle’s oil capacity.

Recommended 

Vehicle Oil Capacity

Element

Up to 9 quarts (5.78

9

long)

EaBP-90

Up to 15 quarts (7.25

9

long)

EaBP-100

Up to 21 quarts (10.44

9

long)

EaBP-110

Service recommendations for these filters are listed later in these instructions.
Selecting a larger filter than recommended may extend the service interval, while select-
ing a smaller filter than recommended may shorten the service interval.

C. Attaching the filter mount

1. Survey the engine compartment for possible mounting locations. Solid structures such

as the firewall, fender well, radiator support or frame are normal locations. 

(Do not

mount on engine.)

Refer to diagram B for minimum area requirements and consider

accessibility for servicing.

2. Refer to diagram A for preferred mounting positions.
3. When the location has been determined, use the mounting template provided to locate

and mark mounting holes. This can be easily done with a center punch and hammer.

4. Install adapter fittings (BP-208) on filter mount (BK-303) using provided thread

sealant as noted in diagram C. If desired, 90° angle fitting (BP-52) may also be used.
Using a 

7

16

9

wrench, tighten fittings 2-3 turns beyond finger tight. Keep in mind the

direction you wish to have the hoses intersect the mount.

5. With a 

5

16

9

drill bit, drill out the previously marked mounting holes and attach the

mount using the 

5

16

9

bolts, nuts, small washer and fender washers provided.

Bolts should be tightened to 16-18 foot pounds. 

1

2

9

wrenches or socket will be

required for this operation.

6. Fill the By-Pass Filter element with the same motor oil being used in the vehicle.

Lubricate the filter gasket with oil and spin filter onto mount. Tighten per instruc-
tions on the filter.

D. Oil Supply

1. Locate oil pressure sending unit (see diagram E). Remove unit and install “T” (BP-33)

using thread sealant as noted in diagram C and tightening 2-3 turns beyond finger tight.

N

No

otte

e::

See diagram G if oil pressure sending unit has a 

1

4

9

N.P.T. thread.

N

No

otte

e::

Special adapters may be needed to install “T” on some engines. Refer to the

Oil Pressure Sending Unit Information Guide. Occasionally, additional fittings may
be needed.

2. Reinstall sending unit in one opening of the “T” and a fitting adapter (BP-208) in

the other. Use thread sealant and tighten as noted in D.1. Use 90° Street Elbow 
(BP-52) if necessary, keeping in mind the direction you wish the hose to intersect
the fitting.

3. Measure the amount of hose (BP-251) you will need to run from the Oil Pressure

Sending Unit “T” to the filter mount fitting labeled 

IIN

N

. Additional length will be required

to accommodate engine movement during operation. Using a utility knife, squarely
cut the hose to the proper length.

N

No

otte

e::

The hose and fittings supplied with this kit have been matched to provide max-

imum performance and life expectancy. Interchanging with other types or brands
is 

n

no

ott rre

ecco

om

mm

me

en

nd

de

ed

d

and 

ssh

ho

ou

ulld

d b

be

e a

avvo

oiid

de

ed

d

. Should additional hose be required,

it may be obtained from your AMSOIL Dealer by ordering part number BP-251.

4. Install hose fittings (BP-261) on both ends of the hose following the instructions noted

in diagram F. Tools required are one 

9

16

9

wrench and one 

11

16

9

wrench or vise.

N

No

otte

e::

Do not use any form of thread sealant anywhere on the BP-261 hose fittings.

5. Route and connect the hose assembly making sure the hose does not contact any

hot or moving surfaces or sharp edges. Ensure a minimum of a 

3

4

9

bend radius is

maintained at all corners. Also, bends in hose should not begin at hose fittings. Using

9

16

9

and 

7

16

9

wrench, tighten hose fitting swivel nut to 130-150 inch pounds or

from finger tight, rotate an additional 120° or 

1

3

of a turn. See diagrams D and H

for additional details.

E. Oil Return

Two options are available for returning the filtered oil to the engine. The first uses a
self-tapping hollow bolt (BP-40) and allows the oil to be returned to either the oil pan
or a rocker arm/valve cover. The second, which uses an optional swivel fitting (BP-89),
returns the oil to the oil filler cap already installed on your vehicle. 
1.

O

Op

pttiio

on

n o

on

ne

e::

select either the oil pan or valve cover for installation. 

N

No

otte

e::

The self-

tapping hollow bolt should be used on stamped metal components only. For oil pan
installation, mark a spot approximately 3

9

above the bottom of the pan. Avoid any

pan formations that may suggest an internal obstruction. For the valve cover,
choose a mounting location that will not interfere with the movement of internal com-
ponents and away from the PVC pick-up.

2. Using a punch and hammer, punch a hole in the chosen location between 

1

4

9

(.25

9

)

and 

5

16

9

(.3125

9

)in diameter. 

N

No

otte

e::

Do not drill this hole as metal fillings are likely

to enter the engine and it will produce a weaker attachment of the self-tapping hollow
bolt.

3. Using a 

9

16

9

wrench, thread in the self-tapping hollow bolt (BP-40) and sealing gasket

(BP-41). As the bolt is tightened, make sure sealing gasket is snug all the way around
bolt. Tighten bolt to 6-8 foot pounds.

4. Using a 

7

16

9

and 

9

16

9

wrench, install fitting adapter (BP-208) in self-tapping hollow

bolt. Use a 90° Elbow (BP-52) if necessary keeping in mind the direction you wish
the hose to intersect the fitting. Use thread sealant provided as noted in diagram C.
Tighten 2-3 turns beyond finger tight. Proceed to item 10.

1.

O

Op

pttiio

on

n ttw

wo

o::

remove the existing oil filler cap. Be sure there is not a PVC pick-up in

this area.

2. In the center of the cap, drill a 

3

8

9

hole.

8. Install the long threaded portion of the optional return line swivel fitting (BP-89) into

the top of the oil filler cap. Secure with the provided self-locking nut and 

9

16

9

wrench.

3. Using thread sealant, install a fitting adapter (BP-208) into the return line swivel fit-

ting. Tighten 2-3 turns beyond finger tight. Reinstall oil filler cap on vehicle. A 90°
Elbow (BP-52) may also be used.

4. Measure the amount of hose (BP-251) you will need to run from the self-tapping

bolt or optional return line swivel fitting to the filter mount fitting labeled 

O

OU

UT

T..

Additional length will be required to accommodate engine movement during oper-
ation. Using a utility knife, squarely cut the hose to the proper length.

5. Install hose fittings (BP-261) on both ends of the hose. Follow the instructions noted

on diagram F.

N

No

otte

e::

Do not use any form of thread sealant anywhere on the BP-261 hose fit

tings.

6. Route and connect the hose assembly making sure the hose does not contact any

hot or moving surfaces or sharp edges. Ensure a minimum of a 

3

4

9

bend radius

is maintained at all corners and hose bend does not begin at fitting. Tighten hose

IMPORTANT NOTICE

Read 

a

allll

instructions completely before attempting to install this unit. Improper

installation could result in serious system and/or equipment damage. The
installation of this system is not difficult, however, some mechanical ability is
necessary. If you are not comfortable with the instructions or have questions,

d

do

o n

no

ott a

atttte

em

mp

ptt tto

o iin

nsstta

allll tth

hiiss ssyysstte

em

m..

Consult a mechanic or contact AMSOIL

INC. for further instructions or assistance.
If installing on a Japanese- or European-built vehicle utilizing 

M

Me

ettrriicc

or 

B

B..S

S..P

P..

threads, additional parts may be required. Consult step D.1 before you continue.

W

WA

AR

RN

NIIN

NG

G::

This filter system is not designed to replace the engine’s normal full-

flow filter. Do not attempt to install a by-pass filter element in place of the exist-
ing full-flow filter. 

W

WA

AR

RN

NIIN

NG

G::

Extreme care should be taken to avoid bodily harm during installa-

tion. Before starting, ensure the engine is cool to avoid burns and 

n

ne

evve

err

work

in the engine compartment area with the engine running.

Single Mount By-Pass Filter System

Installation and Servicing Instructions

BMK-21

Summary of Contents for BMK-21

Page 1: ... a 9 169 and 7 169 wrench tighten hose fitting swivel nut to 130 150 inch pounds or from finger tight rotate an additional 120 or 1 3 of a turn See diagrams D and H for additional details E Oil Return Two options are available for returning the filtered oil to the engine The first uses a self tapping hollow bolt BP 40 and allows the oil to be returned to either the oil pan or a rocker arm valve co...

Page 2: ...aks hose dete rioration and cuts Repair and or replace as necessary 2 Refer to Recommended Filter Change Interval chart for servicing intervals 3 To change the filter element a Ensure engine is off and use caution as the engine oil and filter may be hot and could result in an injury b Using a filter wrench remove the filter element Dispose of properly c Clean the filter gasket contact area on the ...

Page 3: ...ket using wrench on nipple hex until nipple hex shoulders against socket AMC except Renault All 1 AUDI Fox 100 4000 5000 Diesel Turbo All 3 Alfa Romeo 1600 1750 2000 Alfetta Spider Veloce All 3 Alfa Sud All 5 BMW 2500 2800 520 1600 2 2002 To 1975 3 320 6333 733 530 1975 81 4 All models 1982 83 4 Buick except Opel All 1 Cadillac All All 1 Chevrolet except All 1 Luv 1800cc Sprint Spectrum 1976 88 2 ...

Page 4: ...P 251 BP 261 BP 208 1 89 STREET T 1 49 STRAIGHT T 1 89 x 1 49 BUSHING 1 49 x 29 BUSHING HOLLOW BOLT SEALING GASKET 90 ELBOW 1 89 5 169 WASHER PLASTIC TIE 5 169 NUT 5 169 x 19 BOLT FILTER MOUNT 5 169 FENDER WASHER 1 49 I D HOSE 1 49 HOSE FITTING FITTING ADAPTER NOT TO SCALE 1 1 1 1 1 1 4 3 2 3 3 1 3 8 4 4 AMSOIL BP 251 ...

Page 5: ...hanna Ave Superior WI 54880 Tel 715 399 TECH 8324 The customer must also allow the AMSOIL Technical Services Department to examine the By pass System or Filter s and if required the engine or equipment to determine the extent of damage and whether it was caused by a defective AMSOIL By pass System or Filter s The By pass System and Filter s must be returned in its original undamaged condition to t...

Page 6: ......

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