Scion stands out for great parts. However, consumers need new Scion spark plug parts if the old parts are worn or damaged. To change the plugs on your vehicle you will need the proper size socket, a gapping gauge, a ratchet, a torque wrench, and a new set of spark plugs. Plugs have different heat ranges: the longer the spark plug insulator the hotter the spark plug will operate and the shorter the insulator the cooler the spark plug will operate. We offer fast and reliable delivery for customers. There are plenty of inexpensive and quality Scion parts on our site.