Custom Diesel Service LLC | 24/7 Roadside Service | Diesel & Truck Repair Shop

I recently had the pleasure of visiting Custom diesel services and I was thoroughly impressed. Dennis and his team were knowledgeable, efficient and went above and beyond to make sure my truck was taken care of properly. I left the shop feeling confident that my vehicle was in the right place for a reasonable and fair price. If anyone needs a reliable diesel mechanic this is the place to go.

I highly recommend Custom Diesel. Todd and Dennis have always rescued me in times of need when my truck broke down or gave me issues. They always put my needs first before money. Todd, Dennis , Anita and the whole staff are extremely kind and have always treated me like family. They're a true blessing to me. If or when you need a reliable mechanic , Custom Diesel is the one for you. I promise!

I was having a trailer transported to New York and a tire blew out in PA. Dennis not only drove to a store to purchase a tire for me, but fixed the whole problem in no time. After calling ten other companies and getting rejected, Dennis did the job no problem. So thankful I found him, best in PA!!

I can't imagine I can get any better service, that we get from Custom diesel. They respond immediately when we need repairs and maintenance. And at fair prices

Ken Madera
Fleet manager
At J&R Logistics

Got my 18yo Freightliner back on the road quickly and professionally - absolutely recommend this crew if you're stuck out on the road in the area!

Honestly Custom Diesel for me is the best shop around, ive been taking my trucks there for years theyre skills are the best ,after so many years i know them they became like family to me Mr denis , Todd , Joe and kevin are the greatest guys i know they always willing to help me with everything also the office staff are the best always threat me with kind and respect thank you Denis and staff for everything.

Carriage bearing broke. Mechanic arrived in less than an hour, pulled off old one then was gone for ten minutes and came back with a new one and is installing it as I type this. In my 30 years of driving, I have never had roadside service this quick. Highly recommended!

Our first ever experience with this shop late yesterday afternoon. They were very pleasant on the phone, and basically said get the truck here and we will fit it in for you. We got there only 30 minutes before they were supposed to close, but they stayed late, kept working on our truck, found and fixed the problem, and got us back on the road in a couple of hours! AMAZING!!!! And I was blown away by their very very reasonable prices. Honestly, I can't say enough good things about them. It's getting harder and harder these days to feel like you can trust a shop. If I were you, I would definitely add them to your trusted shops list and take your stuff to them if you need help or work done in the Allentown PA area.
I would give them 10 stars if I could!
Thanks again guys!

This is one of the good shops..I’ve been over the road for 14 years & I’ve never seen such professionalism..I called there shop for road side assistance at 2:30a.m on a rainy night because my truck was not airing up at all.A nice gentleman name Dennis came out before his estimated time & tried a few different things but my air compressor just wasn’t pumping air..He aired me up with shop air to get me to a safe location & then gave me 3 different reputable towing companies.He wasn’t worried about getting paid he just wanted to get me going .He immediately got my part number & advised me on what I needed to do & what i would possibly need so by the time I got to the shop he was already on a mission to locate my part.The nice man took a 3 & 1/2 hour drive for me & left me in the shop with a guy name Todd who was professional as well & he notified me of everything that was going on step by step.He even offered me food while waiting you could tell his His parents did a very good job of raising this young man😊. They got me up & rolling the same day like they promised & I would highly recommend this Shop for there world class service & treating me like family…..I would give a 10 star rating if possible & I rarely leave good reviews but this company actually deserves to be complimented

Amazing. I call him Mr. MAGIC.
unbelievable how fast sharp and knowledgeable this company is. THANK YOU

Have used Custom Diesel many times. Whether its a road call or an entire hood repair you can really count on Dennis and his staff to handle everything professionally and in a cost effective manner. No complaints here and we plan to be a customer for many years!

We have an older yard truck that we use to move trailers in and out of our docks to preload orders for certain customers. When our truck has issues we trust Custom Diesel to get us back in business and to keep us running. They are fast and reliable and give us the ability to keep servicing our customers. We appreciate all they do for us.

My truck broke down in Bethlehem PA. I got recommended to Custom Diesel by the tow company. The mechanic Joe was very empathetic, understanding, professional, thorough and very very detailed about his findings. I would recommend Custom Diesel any time and thank you for a great job.

Have used Custom Diesel many times over the years and they are a phenomenal shop. Todd and Dennis are great mechanics and really nice people and will do whatever they can to work with you and get you back up and running as quickly as they can.

My radiator was leaking very bad. Called shop they said they will take and do the job one day. It was friday and I thought I will stuck atleast till monday. But they get the radiator and installed same day. Im back in bussiness and very happy with their job. Nice and friendly people. Definetely I can recomend this shop. Also they charge reasonable hourly rate.

Broke a tie rod end...didn't know the truck had been modified so parts according to my Vin didn't fit. The tech went above and beyond to find the correct parts and got me rolling again..and gave me a great price!

Custom diesel service is a great service provider. Dennis and all the guy are amazing at what they do. I just had my liftgate rebuilt by Dennis. He had to weld all kinds of new steel parts on there and it is now working at 100%, like new! Great service great prices they help keep my fleet of trucks up and running thanks for all of the great work!

Custom Diesel Service did an excellent job on my truck, I busted my coolant hose while driving over a pump in a warehouse that was under construction near Allentown PA. The mechanic man checked it, bought a new hose from the dealer and installed it quickly. I was back on the road shortly. 👍👍🙏🙏. I recommend their work to anyone who have mechanical issues around that area.

Working with Dennis for about a year now, great team, great service.

I had a disabled tractor truck on the side of the road and Custom Diesel was a life saver. Quick road service response, knowledgeable service tech. Would definitely use again. Great to have honest, caring people like Customer Diesel Service around.