Jagg Oil Coolers | susa, llc. | PO Box 847 | Centerburg, OH 43011 | t. 740 625 6228 | www.jagg.com
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Warning: Installation should only be attempted by those with mechanical skills and experience working on vehicles.
Standard safety precautions consistent with the tools and dangers of automotive work should be followed to protect from injury.
Specifically, wear protective equipment, take care to stabilize the vehicle on a level surface or supportive lift, and al-
low vehicle to cool before attemption installation; failure to comply can result in injury and/or damage to equipment.
INSTALLATION INSTRUCTIONS
Part # 4702
Offset Oil Filter Adapter with Viscosity Regulated By-pass
Please read these instructions completely before beginning installation.
KIT CONTENTS
QTY.
DESCRIPTION
1
Jagg 4702 Offset Oil Filter Adapter Body
1
Jagg 4702 Offset Oil Filter Adapter Faceplate
3
10-24 x 5/16” countersunk flat-head hex-drive screw
for 4702 Faceplate
1
Jagg 4702 steel LOCNUT with 3/8” ratchet cutout
1
Large O-ring, square profile
1
1/8” NPT pipe plug
2
adapter fittings - 1/8” NPT to 3/8” push-on hose barb
2
7/8” black wormdrive hose clamps
1
anti-rotation device
2
10-24 x 5/16” button-head hex-drive screw for an-
ti-rotation device
TOOLS REQUIRED
DESCRIPTION
strap wrench or oil filter removal tool
3/8” ratchet & ratchet extension
7/8” deep well socket
1/8” hex key tool
Operation Summary
The Jagg #4702 offset oil filter adapter is used to access the oil
supply for the installation of a Jagg oil cooler. The #4702 directs
oil through the filter first for optimal flow characteristics. After
filtration, the oil may either travel to the oil cooler or by-pass the
oil cooler, according to the built-in Viscosity Regulated Flow (VRF)
plug function. Cold, viscous oil will by-pass the oil cooler, speed-
ing warmup to standard operating temperature.
As the engine reaches operating temperature and oil reaches op-
timal viscosity range, the VRF plug will keep the #4702’s by-pass
hole closed, sending hot, filtered oil to the oil cooler, and deliver-
ing cool, clean oil to the engine.
Oil flow direction from adapter: oil feeds the oil cooler from the
fitting on the left side and returns to the fitting on the right side,
as viewed from front with oil filter adapter fittings at bottom.
r20230320
Pre-installation steps
1. Remove spin-on oil filter, and clean the filter mounting sur-
face thoroughly.
2. Using a 7/8” deep well socket, remove the stock oil filter
stem. If removing and upgrading a factory Harley-Davidson
oil cooling system, uninstall the stock oil filter adapter by
removing the flanged oil filter nipple that holds the adapter in
place using a 7/16” hex key tool.
3. Disassemble the 4702 by removing the three countersunk
flat-head hex-drive screws from the front face of the adapter
using a 1/8” hex key tool. Then, remove the faceplate from
the adapter and remove the LOCNUT from within.
Installing NPT pipe plug & hose barb adapter fittings
4. Apply thread sealant to male pipe threads if not pre-applied.
If PTFE tape is used, it should be wrapped 1-1/2 to 2 turns in
clockwise direction when viewed from the pipe thread end.
CAUTION: More than two turns of tape may cause distortion
or cracking of the port.
5. Screw the NPT plug into the port to finger tight.