When your interlock relay isn't working right, it can be a real problem. When your interlock relay is causing your trouble, you've come to the right place. At AutoAnything, you'll find a selection of OE, OE-grade and generic interlock relays in stock now. With free shipping and a 1-year lower price guarantee, these replacement interlock relays save a bundle in repair costs. And, when you order by today's deadline, your interlock relay ships the same day. Save money on vehicle repairs at your one stop parts shop.