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Sinister Diesel

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198 reviews

4.5198 reviews
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About Sinister Diesel

Data updated
Website
sinisterdiesel.com
Category
Vehicles & Transportation
Location
United States
Status
Unclaimed
Last 12 months
64 reviews
Replies to negative
44% (8/18)
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About this business

Sinister Diesel is your one stop shop for Ford, Chevy, GMC, and Dodge diesel performance parts. Sinister Diesel is also the number one source for Diesel Racing Components, Exhaust Systems, Tuners, Ford Powerstroke, Dodge Cummins, and GM Duramax engine repair parts, upgraded EGR coolers, lighting, bumpers, grilles, and suspension components from our parent company Sinister MFG & Sinister Diesel®. We offer the biggest names in the industry to help you repair or modify your Powerstroke, Cummins, or Duramax diesel engine.

Is Sinister Diesel legit?

Sinister Diesel (sinisterdiesel.com) has a 4.5 out of 5 rating on OK.one, based on 198 user reviews collected here. It is listed under Vehicles & Transportation and its reputation is excellent. 86% of reviews are 4 stars or higher and 6% are 1 star; The business has replied to 44% of negative reviews; Reviews mostly discuss Product, Quality, User experience. Last updated 2026-09-08.

What reviewers say

AI generated

Reviewers overwhelmingly had a great experience with this company. Customers frequently praise the high quality and outstanding performance of the products, noting that everything works exceptionally well and fits their trucks perfectly. People also appreciate the fast shipping times and secure packaging, making the entire purchasing process remarkably smooth and easy. However, some people mentioned frustrating issues with unexpected backorders and prolonged delivery delays. A few consumers also noted that certain replacement parts required unexpected modifications or extra adjustments during installation. Despite these occasional challenges, most buyers remain very satisfied with their overall purchases and intend to order again.

Auto-generated from all reviews of this business. For reference only.

What people say

D
Don Jones · 1 review · Experienced 2026-04-13 ·

Fit perfect

Reply from Sinister Diesel2026-04-13

Glad to hear it fit just right. We appreciate you choosing Sinister Diesel.

Products came with a quickness

Products came with a quickness, packaging was legit! I’m super happy with the package I purchased and would recommend taking a second look if your in the thinking stage!!

Reply from Sinister Diesel2026-04-13

Appreciate you taking the time to share that. Glad everything showed up quickly and arrived the way it should. Great to hear you’re happy with it, thanks for the recommendation and for choosing Sinister Diesel.

N
Nick Thomas · 2 reviews · Experienced 2026-04-01 ·

Coolant filter for my 6.7…

I bought the coolant filter for my 6.7 Cummins. The product is great and quick tip, I bought the WIX 24071MP filter to replace the 24070 filter that comes with the kit to allow more room to get a wrench under the filter. I did end up getting leaks in the shut-off vavle connections when trying to have them perfectly straight up. I called customer service and an american actually return called me within a couple hours. I was shocked. Great product, great service. I did pay for expedited shiping as they are on the west coast and I am on the east but it took them a couple days to fullfill the order before it went to shipping and then it still took 3 more days to arrive. I would not pay the expedited shipping again. All else is great so I still give a 5-start review.

Reply from Sinister Diesel2026-04-08

Thank you for taking the time to share this, we appreciate the detailed feedback. Glad to hear the kit is performing well and that our team was able to get back to you quickly when you called in. We also appreciate you pointing out the fitment and install notes, along with the feedback on expedited shipping. That kind of input helps us continue to improve both the product experience and our processes. Thanks again for your business and the 5-star review and if you need anything down the road, we’re here to help.

A
Adam Estevez · 1 review · Experienced 2026-04-04 ·

Very fast shipping and great product…

Very fast shipping and great product and presentation, I’m very happy overall with my experience with the sinister diesel team!

Reply from Sinister Diesel2026-04-06

Thank you for the review, we really appreciate your business. Glad to hear you had a great experience. If there’s anything you need down the road, don’t hesitate to reach out.

S
Steve Chila · 1 review · Experienced 2026-02-25 ·

Quick response and shipping.Excellent…

Quick response and shipping.Excellent service.

Reply from Sinister Diesel2026-03-25

Appreciate the review! Glad our team was quick to respond and get your order out fast. We’re here anytime you need us.

D
DW · 1 review · Experienced 2026-03-13 ·

Order went smooth and easy.

Order went smooth and easy. Great instructions and easy installation.

Reply from Sinister Diesel2026-03-30

Glad to hear everything went smoothly from start to finish. We put a lot of focus on clear instructions and straightforward installs, so it’s great to know that made a difference. Thanks for choosing Sinister Diesel!

C
CO Hound Dogs · 4 reviews · Experienced 2026-03-03 ·

Customer support was very helpful

Customer support was very helpful. Shipping was fast and install of bypass oil filter set up was very straightforward and easy

Reply from Sinister Diesel2026-03-24

Thank you for sharing that! We’re glad our team was able to help and that everything, from shipping to install, went smoothly. That kind of straightforward experience is exactly what we aim for. We appreciate you choosing Sinister Diesel and are here if you need anything down the road.

R
Raul Mercado Cruz · 1 review · Experienced 2026-02-24 ·

Amazing!

Amazing!! Fast shipping and easy install

Reply from Sinister Diesel2026-03-23

Love to hear it, thank you! Glad everything showed up quickly and went on without a hassle. We appreciate you choosing Sinister Diesel and are here when you’re ready for the next upgrade.

D
Derrell Smith · 3 reviews · Experienced 2026-03-07 ·

Great products and good prices

Reply from Sinister Diesel2026-03-23

Thank you for the feedback! We’re glad to hear the products and pricing both hit the mark. We appreciate you choosing Sinister Diesel and look forward to helping you again.

A
AJ · 2 reviews · Experienced 2026-02-20 ·

Not to bad

Everything worked perfect shipping was a mess

Reply from Sinister Diesel2026-03-13

Hey AJ, we are sorry to hear about the shipping. We are unable to find you in our system with just initials. If you could reach out, we'd like to see how we could make up for that. We work hard to provide every customer with a 5-star experience. Thank you for choosing Sinister Diesel!

D
Dan Householder · 2 reviews · Experienced 2026-02-20 ·

Looks solid

Looks solid. Wont get around to installing it until I tackle the heater core in a few months.

Reply from Sinister Diesel2026-02-23

Appreciate the review! Glad it made a strong first impression out of the box. Let us know if any questions come up when you get to installing it.

T
Todd Foley · 1 review · Experienced 2026-01-19 ·

Alsome 💪💪💪💪💪💪💪💪💪💪

Reply from Sinister Diesel2026-02-19

We’ll take that as a win! 💪😄 Thanks for the energy and the support, it means a lot. We’re glad you’re happy with everything and appreciate you choosing Sinister Diesel.

B
Brian Downing · 1 review · Experienced 2026-01-07 ·

Service call from hell

Ordered part, then hit call telling me that the part was back ordered, 6-8 weeks for delivery. The woman that called was insulting and told me that it was my fault for misreading the order page. She must've been standing on her desk yelling. It was loud. Told her goodbye, no more sinister diesel.... BYE

Reply from Sinister Diesel2026-02-19

Hey Brian, We are sorry to hear this. The part you ordered is a 5-7 day lead time, which is stated on the website... but definitely not a 6-8 week delivery time. We left a message for you to get to the bottom of this, so please call us if you'd like to chat about this. We work hard to provide every customer a positive experience, so would like to see where this went wrong.

T
Thomas Taylor · 1 review · Experienced 2026-01-17 ·

Quick delivery

Quick delivery, great product.

Reply from Sinister Diesel2026-02-16

We appreciate the feedback! Glad everything showed up quickly and that the product delivered like it should. Thanks for choosing Sinister Diesel! We’re here whenever you’re ready for the next one.

S
Stephen Torres · 3 reviews · Experienced 2026-02-02 ·

Quality items

Have received the order but have not had the time to install it yet. I am very happy with the quality and craftsmanship of the items, and the blue powder coating is the exact color i am looking for to accent my truck

Reply from Sinister Diesel2026-02-02

Thanks for the review! We’re glad to hear the quality and craftsmanship stood out right away, and it’s great to know the blue is exactly the look you were going for. We appreciate you choosing Sinister Diesel and hope the install goes smoothly when you get the chance. (And if there is anything we missed to get that extra star, let us know! We aim for a 5-star customer experience every time)

T
Trey Wilkinson · 1 review · Experienced 2026-01-10 ·

Great products.

Liked the packaging, my pipes and intakes were packaged good. The intake makes a crazy difference in sound, turbo is about 2-3 times louder paired along with my intake horn. Products also came with good instructions, clear and easy to follow.

Reply from Sinister Diesel2026-02-02

Thanks for taking the time to share your experience. We’re glad to hear everything arrived well packaged and that the install instructions were clear and easy to follow. It’s also great to hear you’re enjoying the difference in sound, that turbo whistle never gets old. We appreciate you choosing Sinister Diesel and are always here if you need anything as you continue the build.

r
robert shepard · 2 reviews · Experienced 2026-01-30 ·

The customer service was tremendous…

The customer service was tremendous with this company I ordered a bunch of new parts and one came in for the wrong year. They literally had the correct one out to me the next day even before I sent the wrong one back.

Reply from Sinister Diesel2026-01-30

Thank you for the great review! We’re glad our customer service team was able to jump in quickly and get the correct part out to you right away. Taking care of issues efficiently and keeping customers moving is something we take a lot of pride in. We appreciate your trust in us and are always here if you need anything else.

R
Ron Agnich · 2 reviews · Experienced 2026-01-26 ·

Great quality parts

I received the part(s) as ordered within the estimated delivery date despite it being on backorder. The fuel filter was professional engineered and fabricated. I have yet to install it but looking forward to getting this installed so I can drive my truck worry free.

Reply from Sinister Diesel2026-01-30

Thanks for sharing your experience. We’re glad the order arrived within the expected timeframe and that the quality and engineering stood out to you. That peace-of-mind feeling is exactly what we aim for with our fuel system components. We appreciate your business and hope the install goes smoothly. We’re here if you need anything along the way. And let us know if there's anything we can do differently to earn that extra star.

J
Justin McAulay · 1 review · Experienced 2026-01-22 ·

Good parts!

Reply from Sinister Diesel2026-01-28

Thanks for the feedback! We’re glad you’re happy with the parts. We appreciate your support and look forward to helping you again.

J
JEREMY SLAUGHTER · 1 review · Experienced 2026-01-01 ·

Great intake kit

Intake kit for a 2000 ram 2500 5.9 cummins. Works as designed. Great fit and finish.

Reply from Sinister Diesel2026-01-23

Thanks for the review! We’re glad to hear the intake kit fit your 2000 Ram 2500 as intended and that the fit and finish met your expectations. Our team puts a lot of care into the design and build of every part, and we appreciate you choosing Sinister Diesel.

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