Coy’s Diesel Worx

04/02/2026

Shop supervisor Jed says it’s warming up…

Which means it’s time to bring your truck in for:
• AC service
• Cooling system checks
• Maintenance before towing season

He’ll handle quality control from the shop floor.

03/27/2026

Anyone in need of a fresh set of 305/45r22 Nitto 420’s? Brand new. $760 for the set(190 each)
DM me or call txt 301-800-9496

03/27/2026

Installing some Hamilton valve springs in a 3rd gen.Let us know how we can help with your build 👍

03/21/2026

First event of the season was a blast!

03/21/2026

🚨 SHIRT SALE 🚨

Don’t miss out!
👕 1 for $15
👕👕 2 for $25

Limited time—grab yours before they’re gone!

👉 If you’ve already paid and have NOT received your shirt yet, please reach out to us so we can get that fixed ASAP.

We appreciate all your support! ❤️

03/05/2026

Going to finish this week up by putting this beautiful 900hp rated unit in an L5P Duramax.

As our business continues to grow, we’re committed to bringing our customers some of the best products in the diesel industry to keep their trucks performing at the highest level. Thats why we’re proud to announce that we are now an authorized dealer for Firepunk Diesel , along with other top-tier companies like Exergy Performance and D&J Precision Machine

Whether you’re looking for parts, advice, or ready to start your next build, we’re here to help.

301-800-9496

02/25/2026

Stay tuned, we’ll be posting more content from this 6.0 build soon 🫣

01/30/2026

Braddock Motors Sales & Service selling another sweet looking truck if anyone is in the market!

💪 BUILT TO WORK. BUILT TO IMPRESS. 💪

2021 GMC Sierra 3500 HD Crew Cab Denali
Pickup 4D • 8-FT Bed

Heavy-duty power meets Denali-level luxury.
From towing and hauling to everyday driving, this truck delivers strength, comfort, and style.

👉 Shop online anytime
📞 Call when you’re ready — no pressure 301-371-6200

01/30/2026

After 2½ long, cold days of diagnosing a Case 580 Super N that shut down on a customer mid-plow, we were finally able to pinpoint the issue. The culprit ended up being a single loose pin in the main engine harness connector.

This job was a good reminder that persistence in electrical diagnostics always pays off in the end.

Big thanks to Nick’s Equipment & Auto Repair for stopping by with a fresh set of eyes and some solid input—we appreciate the teamwork!

Be sure to like and follow Coy’s Diesel Worx as well as Nick’s Equipment & Auto Repair for more content like this!

11/30/2025

🔥 OPENING DAY RIFLE SEASON ANNOUNCEMENT 🔥
Coys Diesel Worx is proud to kick off our FIRST ANNUAL Trucks & Bucks Competition!
If you’re headed to the woods this week, this one’s for YOU.

We want to see your biggest bucks and your best outdoor truck shots — and we’re giving away prizes for both categories!

🏆 BUCKS CATEGORY – Most post likes wins
📸 Post a picture of your deer in the comments
🎁 Prize: FREE oil change + multipoint inspection

🏆 TRUCKS CATEGORY – Most post likes wins
📸 Post a picture of your truck in an outdoor setting (at the cabin, at the lease, by the boat, in the woods, or on the trail)
🎁 Prize: Diesel winter prep pack: includes 2 bottles of Schaeffers all season diesel fuel treatment, free battery test and a Coys Diesel Worx decal package

Drop your pics in the comments, share the post, and let’s see who’s taking home bragging rights this year!

Good luck, be safe in the woods, and happy hunting from all of us at Coy’s Diesel Worx — The Sportsman’s Diesel Shop.

11/27/2025

We are very thankful for the year we have had and for all of our wonderful customers that we have had the pleasure to work with.
Happy Thanksgiving to everyone and God bless