Jagg, offset oil filter adapter with VRP, Black

With a Viscosity Regulated Bypass, which regulates a valve with similar oil temperature control effects as a thermostat.
Offset design is required when installing an oil cooler on any TCA (Dyna, Touring) or TCB (Softail) Twin Cam model. It is optional for cooler installation on all fuel injected Evo Big Twins with engine mounted spin-on oil filters for easy access to oil lines. Adapter allows the oil to flow through the filter before entering the cooler, resulting in less restriction.
After filtration, the oil will by-pass the oil cooler automatically while the engine warms up to standard operating temperature. Once the bike reaches operating temperature, the Viscosity Regulated Bypass closes the by-pass hole completely and the sends 100% of the hot and filtered oil to the oil cooler, and delivering cooler, 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.
Note: See 970706 for replacement thermostat with gasket service kit and 970727 for the gasket service kit only.