Celebrating 20 years of selling the highest quality parts at the lowest prices. Guaranteed.

"Thanks for the response. We have an inside joke that you guys only hire ninjas with how fast your service is. SIS is definitely the first place I check for parts. You guys have a great thing going on there. Thanks!"

"I ordered intake testsers and was able to find the leaks that Ford couldn't. The silicone vacuum hose works great!! Thick walled no collapse, a RARE FIND!!"

"...ive ordered from you before and love your products and fast shipping. Thanks"

"Your customer service is absolutely top notch!! I will definitely continue to do business with you guys in the future and try to send as many people your way as I can. Thank you again!! Brandon "

"This is the only place I could find such a small, specific silicone reducer! Thanks"

"Wow, in all seriousness... this is awesome. I've never delt with a company that has this good of comunication and get things done. If the stuff is as good as the customer support, I'm getting you guys more customers."