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

"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!!"

"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!"

"Keep up the good work,"

"Meredith, You're my favorite customer service person of all time, just to let you know how highly I think of you. I tell all my car buddies to ask for you by name."

"Just wanted to let you guys know that your site is great and I linked it on one of my local automotive forums. After i get the products in and install I'll more than likely be posting it up on some national/global mustang boards if all goes well..."

"Thank you for having the best prices that I can find. I have looked for hours on line and spent hours going from auto parts house to parts house and you have the best prices around."