Included in the Jagg kit is the 10-row two-pass oil cooler with fan, oil hose and clamps, wire harness and cover, T-fitting, thermal switch, and hardware. As you can see the fan is mounted to the backside of the oil cooler. The fan is a 150cfm sealed motor high-performance motorcycle fan, and according to Jagg, when the bike is stopped and the fan is on, the wind it produces is equivalent to the bike traveling 50 mph.
 This is the Jagg offset oil filter adapter and anti-rotation device. We all know that when oil is hot it becomes thinner/less viscous and as it cools it becomes thicker/more viscous. Jagg’s setup is unique in that it accesses the oil supply a little differently than most. With the offset oil filter adapter, oil flows through the filter before going through the cooler, as opposed to going through the cooler before the filter. Cooling oil before entering the filter can make the oil thicker/more viscous and therefore create restriction on the pressure side of the oiling system as the oil tries to flow through the fine mesh in the filter. While it might not make a huge difference in viscosity, optimal oil flow through the filter is key.
 To begin the install, we lifted the bike for easy access, drained the oil, and removed the oil filter.
 Next we removed the two nuts on the regulator studs and lifted the regulator out of the way.
 We prepared the offset adapter by installing the T-fitting on the hot oil port. The thermal switch is shown here for reference.
 Next, we installed the back half of the adapter onto the stock oil filter flange screwing the supplied 1-inch lock nut on finger-tight.
 With the front half loosely installed, we added the anti-rotation device and rotated the adapter until the device touched the engine case.
 Next, we removed the front half and tightened the 1-inch lock nut (we made sure to maintain the proper orientation of the adapter).
 We then re-installed the front half and tightened the hex screws.
 We installed the thermal switch, rotating the T-fitting for wire clearance. We then installed the cooler bracket onto the regulator studs and connected the fan wire to the thermal switch. We connected the wiring harness with cover to the other prong of the thermal switch.
 The wiring harness was then routed down the right lower frame rail to the brake light switch. We pulled one wire off the brake switch and inserted the piggyback connector of the wiring harness. We then connected the brake wire to the piggyback prong.
 Next we installed the oil hoses and secured them with hose clamps. We made sure to use gentle bends in the hoses and to avoid kinks.
 We then installed the regulator onto the oil cooler bracket. This wasn’t clear in the written instructions, but here you can see how the regulator sits under the oil cooler. Then we fastened the oil cooler bracket to the original regulator studs with the supplied nuts and washers.
 Finally we filled the bike with fresh oil, adding a few extra ounces for the cooler capacity.
 We then ran the motor and checked for leaks. After running some test in 83 degree heat we noticed the oil cooler was able to reduce temperature by 19 degrees. And as mentioned, the fan didn’t kick on until the brakes were applied adding some much needed airflow to cool the engine’s blood when running parade duty. Now you can say we’re really fans of oil coolers.
 The Form-A-Funnel stores flat.
 It can be shaped to create a regular fan shaped funnel…
 Or you can roll it into a long narrow funnel.
 You can even fold it up into a drip tray.
 But it’s best when stuffed in under an oil filter.
Several of our riding buddies belong to the Patriot Guard Riders organization. On escort duty, they do some long, slow parade rides, and in the Texas summer heat, that can be hard on an oil-cooled motor; even one with an oil cooler, because we all know they don’t work unless the bike is moving. So when Jagg announced that it would be offering a fan assist on its already outstanding 10-row cooler, we had to test it.
Jagg sent us three components for installation on our ’07 Road King Custom: its Fan-assisted 10-row Oil Cooler Kit for ’99-08 Dressers and Road Kings (PN FP2300 MSRP $379.95), its Offset Oil Filter Adapter for Twin-Cam applications (PN 4600 MSRP $109.95), and its Offset Oil Filter Adapter Anti-Rotation Device (PN 4600AR-A MSRP $9.95).
Jagg’s oil coolers are well designed and made from high-quality materials. The fan is a 4-inch automotive-style fan that connects to the brake light switch with a piggyback dual connector so the fan will kick on when you apply the brakes. This is very handy when you are stopped in traffic sitting at a long light. In addition, Jagg includes a thermo fan switch so the fan automatically turns on at about 210 degrees when the oil is up to operating temperature.
Installation was easy, except with only written instructions, it wasn’t immediately clear how to rotate and re-install the regulator. Pictures would have helped but since they weren’t included, we’ll gladly let you look at ours.
Afterwards, we ran a test and the oil and head temperatures came down several degrees. Ambient temperature was only 83 degrees F, so it wasn’t s a particularly hot day. Riding on the highway at 65 mph the engine oil temperature was down 19 degrees with the oil cooler and the head temperature was down 8 degrees. At idle without the fan engaged, the oil temperature coming out of the cooler was equal to the temperature going in. However, with the fan, the temperature dropped 12 degrees. That might make a difference on a hot day when you are in a parade or stop and go traffic.
Versatile Flexible Shapeable Funable**
We’ve tried about every trick there is to catch the oil when changing the oil filter on any of our bikes. From special-purpose funnels, to plastic jugs, and even cardboard, none have worked as well as a new device we found called the Form-A-Funnel. Form-A-Funnel is a draining tool that bends, molds, and holds any shape to create the perfect channel to drain liquids without making a mess. It’s made of a thick, pliable nitrile rubber coating that completely encases a thin, bendable layer of aluminum alloy. It withstands high temperature and chemicals, cleans up easily, and stores flat. It’s so versatile we found dozens of uses for it.
Jagg Designed Oil Coolers by Setrab USA Inc.**
(740) 625-6228 · jagg.com
New Pig Corporation
(800) 328-2464 x4098 · formafunnel.com