This is a product specifically designed for full size Broncos. This is the RESPLUG and it's made to STOP all the coolant from sloshing out of your coolant reservoir. Many if not all of the full size Broncos suffer from this waste of coolant. Possibly because of the short wheel base or??? But it does happen with the stock cap in place.

If any of you would like to purchase the RESPLUG it is $8.00 plus $2.00 shipping and you have to either call me at 248-613-5048 or email me at sales@pivotking.com. Website price is $9.00.

This ad was posted on the FSB forum but it applies to the Bronco owners here too.