Ace-High Diesel LLC

08/29/2026

Been busy the past couple of months, want to thank everyone for being patient with us!

Here’s one we just got finished up, truck came in pushing coolant out of it causing some over-heating issues!

New fleece head with grid heater delete upgrade! While we were in there we decided to install a new set of injectors from our guys Dynomite Diesel Products!

Had to finish the job off right with Hot shots secret engine oil, coolant and fuel treatment!

XDP
Hot Shot's Secret

06/22/2026

We were very hesitant about the color, but once it was installed on the truck, it turned out great! The truck came in for some routine maintenance and upgrades to keep it on the road.
Hot Shot's Secret
Wehrli Custom Fabrication Inc.
Fyfe Performance

06/20/2026

🇺🇸 Act Fast! Who needs a 4th of July shirt? 🇺🇸

Don’t wait until the last minute! We’ve got patriotic tees ready to help you celebrate Independence Day in style.

🔥 Orders are due by Wednesday, June 24th! 🔥

Get your order in now so you’re ready for parades, fireworks, BBQs, and all the small-town USA fun.

📩 Message us to order!

06/05/2026

Huge shout out to TMF Prints for knocking these out with a day notice!! The shirts turned out great!!

Love the vintage look and hand feel of these shirts going out to Ace High Diesel.

06/04/2026

Got this one finished just in time to head to Indianapolis for UCC! We will be closed until Monday, the 8th!

This truck came in for head gaskets, but after the heads were removed, we found multiple cracked pistons! With the help of our great suppliers, we were able to get this truck running again! The truck got all new Mahle performance cast pistons, a DDP CP3 conversion kit, and a high-flow piping kit while it was out!

Hot Shot's Secret
FASS Fuel Systems
Dynomite Diesel Products
HSP Diesel
Dirty Ho**er Diesel / DHD

03/31/2026

Spring cleaning isn’t just for your house… your ride deserves it too 👏

For the month of April, Ace High Diesel is offering interior detailing to get your vehicle looking (and smelling) fresh again. Dirt, dust, crumbs from the kids—we’ve seen it all, and we’ll bring it back to life.

Whether it’s work trucks or mom rigs, we’ll have it cleaned up and feeling brand new ✨

🛠️ Already have your truck in the shop? Ask us about getting it detailed while the work is being done—pick it up running better and looking better.

📅 April spots are limited—don’t wait
📍 Ace High Diesel

👉 Message us now to lock in your detail

Let’s get you rolling into spring a little cleaner 😏

03/17/2026

💥Ace High Diesel now has a website! 💥

Now you can check out what we do, see our services, and get in touch with us without having to run into us at the gas station or the Dollar General in town.

If your diesel is acting up, smoking, knocking, or just not running like it should — we’re here to help.

Go take a look and tell us what you think!
👉 https://www.acehighdiesel.com/

Thanks for continuing to support Ace High Diesel and keeping our small-town shop busy!

Ace-High Diesel in Haven, KS offers diesel repair, engine overhauls, suspension, transmission & maintenance. Certified Auto Repair. Schedule an online appointment now

02/04/2026

We love our L5P duramaxs around here! 2022 AT4 with 60,000 miles came in for a slight valve tick at lower rpm! New Callie’s keyed camshaft, lifters and head studs while we are there!

Thanks to Lincoln Diesel Specialties for providing us with quality parts every time!

Hot Shot's Secret for providing this engine with the best oil in the game!

Call or message us for all your diesel repair needs 316-285-2296

01/27/2026

Shoutout to Ace-High Diesel LLC in Haven, KS, for delivering top-notch service and keeping customers running strong. We’re proud to have you in the Hot Shot’s Secret community.

11/10/2025

This customer works in pipeline operations and made his way from Pennsylvania when his turbo decided to give out on him. Fortunately, we got a recommendation to help him out!

We hooked him up with a KC Whistler Stage 1 turbo, along with a Mishimoto intercooler and pipes to make everything run smoothly. We used the best products from Hot Shot's Secret to give it a full service and topped it off with an S&B Filters cold air intake. In the end, we delivered the truck to him in Colorado, and he was thrilled to get back on the road!