Regulator. Fits Evolution Big Twin 1989-1999.

* Replace OEM # 74519-88

Tech Tips:-

* Will Not Fit Fuel Injected Models.

* Regulators are Solid-State Electronic Device that Produce Heat, they need a flow of Cool Air to Dissipate this Heat.

* Black regulators Dissipate heat far better than Chrome Regulators.

* Regulator covers & Low Mount Oil Coolers can block air flow

& reduce heat dissipation.

* As the temperature of a Regulator Increases, the risk of failure Increases - If the regulator gets too hot it will fail.