Derale Performance Universal 4 & 6 Pass Dual Circuit Tube & Fin Cooler User Manual
Derale Performance Water boiler

 
 
Installation Instructions for Engine Oil Cooler Kit’s #15902 & 15903
 
 
 
 
 
 
 
 
Installation Hints
1. The oil cooler core relies on airflow to provide heat dissipation. The best cooler location in the
vehicle is where the cooler will receive airflow from both vehicle motion and the cooling fan. 
Ideally it should be mounted in front or behind the radiator but other locations with sufficient 
airflow will also work. Be careful to protect the cooler from flying objects or any other moving 
parts. 
2. Keep rubber hoses away from sharp edges, hot exhaust and other wear points. Be careful not to
bend hose less than 5” radius (a small coffee can). Keep hose runs as short as possible but 
always rough cut hose lengths 2” longer than measured for insurance 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Thank you for buying our product.
Please read the following
Instructions in full before starting
the installation.
Sandwich Adapter Installation
Sandwich adapter fits between oil filter and engine 
block. Before removing oil filter, check clearance 
between filter and any obstructions such as frame 
rail or exhaust pipe. The adapter is 1 3/4:” thick so 
you will need at least 2 1/4” of clearance. If there 
is insufficient clearance is found, refer to chart 
below for a shorter length filter. 
6
Remove oil filter and clean oil off engine 
block mounting surface. 
7
Install brass hose barbs on adapter 
casting. Use Teflon tape to seal threads. 
8
Take the five threaded sleeve-nuts. Find 
the sleeve-nut that will thread into your oil 
filter, this is the one to use. 
9
Set the o-ring supplied onto the sandwich 
adapter. Apply a light coat of engine oil to 
o-ring seal. Slide sleeve-nut into adapter 
and install on engine with o-ring facing 
engine block. Adapter can be rotated for 
ideal hose routing location. Torque sleeve-
nut to 20 foot pounds. 
10 Install oil filter.
SIZE COLOR
O.D.
FILTER
HEIGHT
FRAM
P.N.
FILTER
HEIGHT
FRAM P.N.
18MM X 1.5
WHITE
3"
4 15/16"
PH3535
3 11/32"
PH3387A
20MM X 1.5
BLACK
3"
4 15/16"
PH2649A
3 23/64"
PH3593A
22MM X 1.5
GREEN
3"
4 15/16"
PH3750
3 63/64"
PH2
3/4-16
YELLOW 3" 4
15/16" PH3600 3
23/64"
PH3614
13/16-16
BLUE
3" 4
15/16" PH3429 3
23/64"
PH3506
NOTE: THE O.E.M. SIZE FILTER WILL WORK IN 
MOST APPLICATIONS EXCEPT IN APPLICATIONS 
WITH VERY TIGHT CLEARENCES. SEE CHART 
BELOW FOR
POSSIBLE OTHER FILTER
OPTIONS.
