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

"Keep up the good work,"

"Great products and Great prices. Wish you guys would set up a page for us to show your products on our cars...."

"I'm a return customer and just wanted to say great job! everything was packaged nicely, and shipped promptly. I intend to remain a lifelong customer. Thanks for the hard work."

"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!"

"looking forward to trying your products.haven't dealt much with an fittings and i hope that if i have any questions your company can help me out.your company came well recommended by some good friends of mine."

"Im thankful for the blog post.Really looking forward to read more. Awesome."