GA Nav Menus Tracking (ga-nav-menus-tracking) free WordPress plugin

Add tracking events to your WordPress navigation menu items!

Reference: https://developers.google.com/analytics/devguides/collection/gajs/eventTrackerGuide

This plugin adds custom fields to your nav menu items that represent the parameters for the _trackEvent method of Google Analytics.

This plugin requires that you already have Google Analytics tracking active on your WordPress website. For example you have Yoast’s Google Analytics for WordPress installed and activated.