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

"i have their W2A ic core/ice box/pump, i got some tbolt clamps and couplers, also a 3" vband clamp with fittings. All very fast shipping and everything is perfect thus far."

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

"Dana B and sis.com [1], Thanks for the solidly good customer service. I look forward to getting my order. -S. P. Henry "

"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."

"They had the exact part that I needed and I requested that it had to arrive at the location at a specific time and they performed with excellence! These guys rock "

"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!"