The first thing you need to do, is decide on which Cummins engine you want to use in your conversion. Although our kits include a lot of the same parts, knowing specifically which engine you are going to use will help us dial in your “kit” and get you and accurate estimate and make recommendations to which additional parts you may need.Read More
We process orders when we receive them, and orders placed before 2PM will usually ship same day. If you have placed an online order for one of our “Getting Started” or “Comprehensive” kits, a Sales Technician should call you shortly after your order is placed to verify your application. Diesel Conversion Specialists® manufactures a large number of the parts included in our conversion kits, but some of the items come from outside vendors. In some instances these items will be drop shipped directly from the manufacturer to expediate shipping if we do not have the part stocked in our warehouse.
If an item is out of stock, or we have it drop-shipped from the manufacturer, we will notify you on your packing slip of the stocked out or drop shipped item(s). Back ordered items will ship immediately when received in our warehouse. Although we do our best to ensure speedy delivery of our parts, we cannot guarantee same-day shipping on drop shipped items.Read More
In most cases, you will be sent a tracking # the same day that you place your order. If you place your order after 2pm MST, or the product has to be drop-shipped from the manufacturer you may receive your tracking number within 3 business days. If you haven't received it by the end of the next day, give us a call and we will get it for you.Read More
Returns and exchanges must be approved prior to return, and the customer is responsible for shipping charges. Returns and exchanges will not be accepted more than 90 days after original invoice. Returns are subject to a 20% restocking fee. On Cancellations, Diesel Conversion Specialists® does not refund shipping charges if the order has already been shipped.
For more on our Return Policy and how to submit a return request, please call a Sales Technician at 406-755-8878Read More
The company was founded as fordcummins.com and was the original Ford Cummins conversion company. As the company grew and the product line expanded beyond Ford and Cummins the name was changed to better reflect the product offering. Fordcummins.com is now Diesel Conversion Specialists.Read More
Diesel Conversion Specialists® sells parts and our conversion shop is located in the beautiful Flathead Valley in Northwestern Montana and is able to take on most conversion projects. If you would like an estimate for a conversion, please call a Sales Technician at 406-755-8878.
Diesel Conversion Specialists® has DIY kits for some Ford ½ ton models from 1990-1996, Ford ¾ton and larger trucks from 1967 - 2010, and Chevy/GM trucks from 1978 - 1999. In addition to these kits, we can perform almost any custom conversion in our shop. For a custom estimate, call a Sales technician at 406-755-8878.Read More
Diesel Conversion Specialists® primarily focuses on repowering Ford and Chevy/GM Trucks. Unfortunately, at this time we do not offer parts or support for any Dodge to Dodge, or Ford to Ford engine conversions. If you would like an estimate for a custom conversion, please call a Sales Technician at 406-755-8878.Read More
Diesel Conversion Specialists® currently only offers parts and service for Cummins diesel conversions. If you would like an estimate for a custom conversion, please call a Sales Technician at 406-755-8878.Read More
Yes, we offer a wide variety of parts to match a Cummins engine to your Chevy/GM transmission. Adaptable transmissions include TH350, TH400, 700R4, 4L60, 4L80 and Allison. Check out the Parts Catalog and Kit Builder or give a Sales Technician a call at 406-755-8878.
Occasionally, although we have sold a couple converted trucks, our business is focused on completing the conversions and selling our DIY kits. Sometimes we do help our customers sell their trucks. Feel free to give us a call at 406-755-8878 and ask one of our Sales Technicians if we have any, or know of any available.Read More
We want to help you in any way we can with your conversion, but it would take large amounts of warehouse space that we don’t have to stock the various parts for all the different applications that we deal with. We can point you in the right direction, but you will need to source any additional parts.Read More
We can help you source a fully Remanufactured Cummins engines, but these engines are not Remanufactured or stocked by Diesel Conversion Specialists®. In addition, we do not stock any used engines.Read More
We have detailed instructions and technical assistance for every part we sell. If you buy a complete conversion kit (Or spend a minimum of $1500) you will receive an in depth installation manual plus technical answers to all your conversion related questions. We have done many conversions in our shop and have helped thousands of customers with their trucks. Now you can put our proven parts, knowledge and experience into converting your truck too.Read More
Yes. We sell a sensor adapter kit that includes adapters to help you install the stock oil pressure and temperature sensors into the Cummins engine. The stock tachometer will work with our Tach Kit, and we include the instructions to help you get the wires all reconnected to your sensors without modifying the instrument cluster or removing the dash panel. In your 6.0L and 6.4L truck, you can also expect your boost gauge to work.Read More
We make our living performing these conversions and selling kits, our customers come first. 100% of the information we have learned on successful conversion methods and wiring was through research and proven hands-on experience. We consider much of this information proprietary and not shared freely under ANY circumstances. If you choose to not purchase parts from us be prepared to spend a lot of time finding answers to your questions.Read More
Yes. Diesel Conversion Specialists® currently offers 15 different Adapter Plates that connect a Ford transmission to a Cummins engine. Modern Ford overdrive automatics are very stout and rated for high torque input making them very conversion-friendly. The 3-speed automatics commonly found in older vehicles were very good in stock applications but are not recommended for diesel conversion projects. Modern 5 and 6-speed Ford manual transmissions are also very stout and conversion-friendly for those customers preferring to shift manually.Read More
Yes. There are a few additional steps and parts needed but gas to diesel conversions are commonly done. Additional parts needed include an intercooler, larger exhaust, & possibly a diesel radiator. For automatic transmissions, an OEM diesel torque converter is needed plus you'll also need to remove the in-tank fuel pumps.Read More
Yes, Diesel Conversion Specialists® engine mounts are bolt-in replacement. They come complete with polyurethane isolators and all the mounting hardware. Our mounts actually locate your engine for you. They will set your engine right where it needs to be side-to-side, up-and-down, and front-to-back, taking the guess work of engine positioning. Mounting the Cummins engine in your Ford truck with our mounts is actually easier than putting the Cummins engine back in a Dodge truck and faster than putting the Ford engine back into the truck.Read More
Although some industrial engines will work with modification and additional parts, we highly recommend staying away from any non-Dodge Cummins engines, especially the electronically controlled engines. We have found that Dodge Cummins engines are the most “Conversion Friendly”. Check out our Engine Information page for more information. If you chose to use an industrial style Cummins engine, be prepared to spend adidtional money on parts and time.Read More
12v – Long block engine with Turbo, Power-steering pump, AC Compressor (94 and newer), Alternator (If you’re Converting a Gas Powered Ford, or a Non Powerstroke Ford Diesel), Throttle Cable, Downpipe, Fuel Injection System, Fan, Fan Hub, Grid Heat and Air Horn.
24v – Complete engine with Turbo, ECM & PCM with Engine wiring harness and PCM wiring harness, Power-steering pump, AC Compressor(94 and newer), Alternator(If your Converting a Gas Powered Ford, or a Non Powerstroke Ford Diesel), Throttle Cable, Downpipe, Fuel System, Fan, Fan Hub, Grid Heat and Air Horn, All Sensors.
Commonrail 24v -Complete engine with Turbo, ECM with Engine wiring harness, Power-steering pump, AC Compressor (94 and newer), Alternator (If you’re Converting a Gas Powered Ford, or a Non Powerstroke Ford Diesel), Throttle Cable, Downpipe, Fuel System, Fan Hub, Vistronic Fan, Grid Heat, Air Horn, All Sensors and Intake Air Intake Sensor (not on motor, in intake).Read More
460 gas engine – Engine Oil Pressure sensor, Coolant Temperature sensor
5.4/v10 Gas engines - Engine Oil Pressure sensor, Coolant Temperature sensor
7.3 IDI - Engine Oil Pressure sensor, Coolant Temperature sensor
7.3 Powerstroke - Engine Oil Pressure sensor, Coolant Temperature sensor and Alternator if planning to use the Ford Alternator
6.0 Powerstroke - Engine Oil Pressure sensor, Coolant Temperature sensor, Engine Oil Temperature sensor, Starter, alternator, Tach Sensor(if converting to commonrail Cummins)
6.4 Powerstroke - Engine Oil Pressure sensor, Coolant Temperature sensor, engine oil temperature sensor, Starter, alternator, Cam Sensor, Tach Sensor(if converting to commonrail Cummins), MAP Sensor, Exhaust Temperature Sensors.Read More
1989 - 1998 12v Cummins Conversion – Conversion truck’s engine wiring harness. 94-98 Cummins Fuel Shut Down Solenoid Plug.
1998.5 – 2002 24V Cummins Conversion – Conversion truck’s engine wiring harness, Cummins engine wiring harness and Harness between PCM and Fuse Block.
2003 – 2005 Commonrail Cummins Conversion – Conversion truck’s engine wiring harness and Cummins engine wiring harness.
2006 + Commonrail Cummins Conversion – Conversion truck’s engine wiring harness, Cummins engine wiring harness, (ECM, SKIM module, and TIPM module and wiring may be required depending on desired tuning)
Download a wiring work order form here
*Currently Diesel Conversion Specialists® only offers wire harness modification services on Ford Conversion TrucksRead More
Diesel Conversion Specialists
1485-B MT HWY 35
Kalispell, MT 59901Read More
Yes, in most cases Diesel Conversion Specialists® has solutions for your Ford truck to make the cruise control work using the existing buttons. Instructions to make this work will be included in the install manual you get with your kit and you may need to get a couple additional parts that Diesel Conversions Specialists® doesn’t offer. In addition for the model years that require soldering small resistors onto the circuit board of the buttons themselves, we offer a service for you to send us your buttons and we do the work for you. Click here to viewRead More
No, if you are comfortable running electric fans you can leave the transmission in its current location. However Diesel Conversion Specialists® recommends moving the transmission back to accommodate mechanical fans if possible. In doing so, you will need to shorten the rear drive shaft, and possibly lengthen the front one if there is a suspension lift on the truck.Read More
Every state has different laws regarding emissions testing and procedures. What’s legal in Montana may not be legal in California etc. The bottom line is this, we ALWAYS recommend that you check with your local and state offices to determine legality.Read More
Diesel Conversion Specialists® does not have dealers, and is proud to offer wholesale pricing to the public without any additional sales tax. We ship parts out of our Montana offices and warehouse.Read More