Sinister Diesel

Hey! We would love to help out with this - if it was dented we would like to make a claim with the shipper and get a replacement out to you. I'm checking in with our customer service reps, but it is hard to find an order without a name. If you do not want to put your name on here, please reach out to us on the help center or give us a call (888) 966-6543. We stand behind our products and our customer service.

Update: I was updated that customer service reached out & two retaining clips are on their way to you! --------------------------- Thanks for the feedback! Glad to hear you're happy with the parts overall, but sorry to hear about the clip giving you trouble. That shouldn’t be happening. We’ll be reaching out to see how we can help get this sorted, but feel free to contact us directly as well—our team’s always here to make sure everything’s working the way it should. We stand behind our products and want to get you taken care of.

Thanks for the feedback! Glad to hear the fit was spot-on—appreciate you going with Sinister!

Thanks for the kind words! We’re glad the kit arrived fast and met your expectations on fit and finish. Appreciate your support!

Appreciate your patience and understanding! Glad our team was able to get the missing part out to you quickly. Thanks for giving us the chance to make it right!

Appreciate the feedback! Glad we could deliver quickly and reliably—thanks for choosing Sinister!

Thanks for the honest feedback! While we’re sorry to hear the original filter didn’t fit as expected, we’re glad our support team was able to step in and get things sorted quickly. Appreciate your patience and understanding—and thank you for giving us the opportunity to make it right!

Appreciate the great feedback! Awesome to hear the cold air intake and intake horn gave your 24 valve Cummins a boost in performance and cleaned up the engine bay. That combo of function and looks is what we’re all about—thanks for choosing Sinister!

This is not the usual experience for our customers, as we pride ourselves in top notch customer service and communication. I checked in with customer service. Our CS rep called and you acknowledged that you had received our email that the item you purchased was on backorder at the time you ordered it. I understand that you did not feel that was sufficient. Unfortunately we have items that are occasionally on back order and we work hard to get them out to you as soon as possible. You chatted our team to cancel after the item had shipped. At that moment our hands were tied as we cannot stop a shipment that has left our facility. Expedited shipping time frame begins after the lead time to process the order. After speaking with you, our CS rep let you know that when we receive the item back from you, there will be a full refund, including your expedited shipping fee. As we understand it, you said you will be out of town and will not be returning it for a week or two. Be assured when we receive your item back, we will issue your refund.

Thanks for the kind words! We’re glad the product, color, and logo hit the mark—and even more so that you had a great experience with our service. Appreciate you being part of the Sinister family!

Appreciate the feedback! Glad to hear the parts arrived quickly and met your expectations. Thanks for choosing Sinister!

Update: Per our records, this was ordered on 4/2 and shipped out on 4/9. Typically these larger kits take that long to build. We do send an email with your ship date, and it may have gone to your junk mail. Hey Michael - I am sorry to hear that this was your experience. We could not find a Michael Balboni in our records. We have a Dominick Balboni that purchased a a Basic Solution with free shipping, ordered 4/2. We send an email to let customers know if an item is back-ordered. Did you purchase directly from us or through a 3rd party? We work hard to provide the best customer service and like to use any failure of that to improve.

Really appreciate you taking the time to share this. We understand how frustrating missing or damaged parts can be, and we’re glad Brian and the team were able to step up and make things right—twice. We don’t take your trust lightly, and it means a lot to hear we’ve earned your continued business. Thanks for sticking with us!