Petersmann Diesel

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United States
Chesterton, IN
Petersmann Diesel

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Diesel customization and repair shop in northern Indiana
I can drop ship most parts also.

10/15/2026

One of my customers just finished an S&S Diesel Motorsport DCR conversion (along with other repairs) on their 6.7, and topped it off with a new S&S Leak Prevention Kit purchased from Petersmann Diesel .
Weather you want to do it yourself, or have us do it, we got you covered when it comes to S&S products. Weather you choose the DCR conversion route or the Disaster Prevention Kit route, I am happy to help!
Let's get that engine bay cleaned up and your fuel system upgraded!

10/13/2026

Petersmann Diesel is now a dealer for Big7Kits.com . These are the best battery cable kits on the market, and we are happy to install them for you as well!
They come with every power and ground cable, even starter solenoid and alternator cables/wires. You can upgrade the guage as well!
They also come with brand new clamp style battery terminals as well!

10/06/2026

Rebuilt a C5 connector on a Cummins for the TIPM. This is the second one of these connectors that have had the main power wire so corroded in the terminal that it's actually pulled out, and was not making contact anymore. If anybody's experiencing the same issue with their Dodge send it my way. I can fully rebuild the entire connector body with a new connector housing if needed for about the same price that Dodge wants you to pay for just the connector body. I get all of my parts from Mouser, so I have all the terminals for all sizes, the crimp tools, and the connector bodies.
For those of you that are unfamiliar with this issue, common side effects of having these wires messed up is multiple communication error codes specifically to the ECM PCM, no start no crank, and the truck will not shift out of park. There's usually a service four wheel drive light flashing along with the trailer light flashing

10/01/2026

Another full Synergy Manufacturing steering system upgrade going on another 3rd gen Cummins. Ball joint going in first then new track bar, T style steering set up, dual shock absorbers, and a new bearing for the existing brace bracket🤌

09/27/2026

The "Heads Up" kit job on the 2015 Duramax came to its conclusion yesterday.
The customer decided to add a set of beautifully made PPE cast iron heads to the job. No more risk of head gaskets walking or issues with the heads warping. Between the ARP headstuds and the PPE heads, the top end is as solid as it can be.

09/04/2026

Today, I'm covering some of the basics for the second gen Cummins 24v trucks! It doesn't matter if you are just a beginner in the modifications world, or you just want a little more reliability/power, I got you!
I made this list with cost in mind, as well as how easy the parts are to install/use.
Either way, I have a wide variety of options, and I can quote according to what you want.
I can also drop ship most parts!
This week is 5% off parts!
Red Head Steering Gears Inc. Synergy Manufacturing FASS Motorsports Airdog
Go check out the video on youtube!

09/03/2026

🤌

09/02/2026

PSA, I broke my work phone today. If you need to get ahold of the shop please DM the page or email me.

08/30/2026

Id rather take extra time and NOT break any bolts. Sometimes bolts breaking is unavoidable. I was lucky to not break a single on on either side.

Address

102 Brown Avenue
Chesterton, IN
45304

Website

http://petersmanndiesel.com/

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