OTC Diagnostic Tools

Find high-quality OTC diagnostic tools and other OTC products at Advance Auto Parts. With over 36 OTC diagnostic tools in our assortment, finding the right products for your vehicle has never been easier.

Some of our most popular diagnostic tools from OTC are the GM Heater Line Disconnect Tool (Part #6046, from $21.49), Fin Comb (Part #18403, from $23.49), and Ford Cam Alignment Tool (Part #6474, from $25.49). Be sure to add your year, make, model and engine to the garage to find the correct diagnostic tools for your vehicle.

According to our customers, when it comes to great diagnostic tools products, OTC makes some of the best. Our customers think the Genisys OBD II Smart Cable (Part #OTC3421-88), Heavy Duty, Remote Starter Switch (Part #OTC3650), and GM Heater Line Disconnect Tool (Part #6046) are some of the high-quality parts from the OTC brand. Be sure to add your own rating or review of these products so everyone can benefit from your experience!

A wide selection of products, competitive prices, and great customer service make Advance Auto Parts your one-stop shop for quality OTC diagnostic tools products. Plus, you can have your diagnostic tools order shipped directly to you, or you can pick it up in one of our convenient store locations in 30 minutes or less! Find a store near you. Explore our top diagnostic tools and other OTC Products below.