The Diesel Dudes Promo Codes and Coupons December 2025

The Diesel Dudes

TheDieselDudes.com is an online retailer specializing in diesel performance parts, accessories, and upgrades for various diesel truck models. They offer a wide selection of products from leading manufacturers, including turbochargers, fuel systems, exhaust components, and engine parts. The company focuses on providing quality diesel performance solutions for enthusiasts and professionals alike.

thedieseldudes.com

Today's The Diesel Dudes discount codes

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Featured The Diesel Dudes Products

Ram Cummins 6.7 Full Delete Bundle | 2022-2024

✅ Cummins 6.7 Delete Kit (DPF, EGR + More) ✅ Bullet-proof Engine Reliability & Massive Fuel Savings ✅ Simple Tune Installation ✅ Free Shipping to the USA & Canada*

USD 6099.00

Tuner Harness Plug Kit | Ford Powerstroke 6.7L 2011-2022 | Shibby Engineering

✅ Best Tuner Harness Kit for 6.7L Powerstroke Models ✅ Easy To install ✅ Protect and Seals Your Factory Connectors from Moisture, Dirt and Debris ✅ Provides Clean and Finished Look ✅ EGR/DPF PLUGS ✅ Shipping Included In Price Vehicle Fitment Fits 2011-2022 Powerstroke 6.7L Pick Up Model Only. Product Features This plug kit provides the harness caps to keep water and debris out of the vehicle harness under the hood and under the body of the truck. Protect your OEM EGR and DPF connections from corrosion or damage, these Tuner Harness Plugs will keep all required connectors to be protected from the elements.

USD 169.00

Diesel Dudes Branded Apparel

Your #1 source of DPF delete tuners and pipes. As well as high quality EGR delete kits. We have high quality products for Ford Powerstroke, Dodge Ram Cummins and GM Duramax engines. Free shipping to the entire USA.

USD 41.99

Bench Flash Delete Tuning | Ram Ecodiesel 3.0 | 2014-2023

NO MORE EMISSION CODES After the delete tune, your truck will no longer have emission related codes or warnings. This includes all 1) “See Dealer” codes 2) Check engine codes 3) “Exhaust system service required” codes 4) Limp Mode codes 5) Other emissions related diagnostic codes HOW DOES IT WORK? This service requires you to remove your ECU/PCM (or have it professionally removed) and ship it to us. We will send you a prepaid shipping label. We do NOT provide instructions on how to remove your ECU/PCM.After purchase, we will email you information on how to label the package you send us so we know it belongs to you.We will bench flash your ECU with delete programming and ship it back to you.Then you install your upgraded ECU and install the DPF delete pipe and the EGR delete kit. FITMENT 2014, 2015, 2016, 2017, 2018, 2019 Ram 1500 3.0L Ecodiesel Pick Up Truck. TOTAL PROCESSING TIME Once we receive your order, look for an email with instructions on how to label your package. Once we receive your package, we require 3-5 business days to process, inspect, and tune your order. We will then ship your ECU/PCM back to you with express shipping. Expect 1.5-2 weeks of downtime for your truck. WHAT’S INCLUDED 1) Delete Tuning via Bench Flash 2) 4” Aluminized DPF & CAT Delete Pipe 3) Complete EGR Delete Kit IMPORTANT INFORMATION *We cannot tune over an existing tune, if your ECU/PCM was previously tuned it will need to be reverted back to factory before a new tune can be used.* Before removing your ECM take note of any maintenance or engine lights on the dash. You should have no errors before removing the ECM. If you have a DEF/DPF countdown issues prior to tuning, those should be cleared. Since those are transmitted by the SCR module it will stay in the cluster and an ECU tune unfortunately does not typically clear those codes. Be sure your codes are all cleared before you remove the ECM. Clear the codes using a code reader/clearer 1- Clear all codes. 2- Turn the key to the off position. 3- Remove the negative cable from the battery. 4- Remove ECM. BENEFITS By deleting the factory emission system which has been suffocating your diesel, you’ll immediately notice a night and day difference. It will perform better in every imaginable way, including speed, fuel economy (5 mpg increase on average), and fewer trips to the autobody shop.Over time, the kit pays for itself with the fuel savings alone. That’s not even considering how many costly trips to the dealer you’ll be saving yourself. The last benefit is peace of mind, knowing your truck no longer has a ticking time bomb attached to it. TUNE HORSEPOWER SETTINGS All options include full delete tuning, the only difference is power 1) Base (No additional power added) 2) +50HP 3) +75HP The 50HP level is enough to feel without putting too much stress on the engine. +75HP is for those looking for even more power. You can expect up to a 10% MPG increase in fuel economy with the stock power level and up to 7% with the 50HP tune. SHIPPING AND RETURNS We will send you a prepaid shipping label via email after purchase. This may take up to 1 business day to process. We will ship it back to you with express shipping. This service is built to order and not eligible for returns or refunds. *Note: Alaska, Hawaii and some Canadian locations will be subject to additional freight charges RELEASE OF LIABILITY We will handle your ECU/PCM like it belongs to our own truck. However, we are not responsible for any damage, theft or loss due to FedEx or UPS. Incidents with shipping companies are rare, but in the event your ECU/PCM is damaged in transit, stolen or lost, we do not bear any responsibility.

USD 999.00

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More The Diesel Dudes Products

BullyDog BDX for Ford Powerstroke 2011-2019 | Delete Tuner

NO MORE EMISSION CODES ✅ Best Selling Powerstroke DPF/EGR/DEF Delete Tuner ✅ Bullet-proof Engine Reliability ✅ Massive Fuel Savings ✅ Transmission Tuning ✅ Simple Plug & Play Tune Installation When you install the delete tune, your truck will no longer have emission related codes or warnings. This includes all 1) “See Dealer” codes 2) Check engine codes 3) “Exhaust system service required” codes 4) Limp Mode codes 5) Other emissions related diagnostic codes BENEFITS By deleting the factory emission system which has been suffocating your diesel, you’ll immediately notice a night and day difference. It will perform better in every imaginable way, including speed, fuel economy (5 mpg increase on average), and fewer trips to the autobody shop.Over time, the kits pays for itself with the fuel savings alone. That’s not even considering how many costly trips to the dealer you’ll be saving yourself. The last benefit is peace of mind, knowing your truck no longer has a ticking time bomb attached to it. WHAT’S INCLUDED? 1) BDX/SCT Tuner (X4 for 2008-2010 Models) with all required cables and accessories 2) Delete Tune customized to your specific truck 3) Switch for shifting power levels on the fly (2011-2019 Models) 4) Dyno built Transmission Tuning Pre-Loaded on BDX Programmer 5) Step by Step Delete Tune Installation Instructions (emailed to you) COMPATIBILITY Compatible with F250, F350, F450 & F550. Including Cab & Chassis models 2008-2010 6.4L Models will use the SCT X4 Tuner. 2011-2019 6.7L Models Will use the BDX/SCT/Bullydog tuner. Important Fitment Note: This tune is only compatible with trucks with OEM air intake systems or S&B air intake systems. TUNE HORSEPOWER SETTINGS The Custom Tunes Includes multiple power levels so you can run your truck the way you want to. 2008-2010 6.4L Models 4 available power levels / Tune files ( No Shift On the Fly) Transmission tuning with raised line pressure on all shifts (protects your clutches and extends the life of the transmission) Level 1- "Stock" No added HP. Ideal for daily driving, towing. Level 2- "Tow" +80HP. Ideal for daily driving, towing. Level 3- "Street" +160HP. Ideal for daily driving and performance. Level 4- "Race" +250HP. Ideal for performance applications. 2011-2019 6.7L Models 5 available power levels with Shift on the fly Transmission tuning with raised line pressure on all shifts (protects your clutches and extends the life of the transmission) Level 1- "Heavy Tow" +40HP. Ideal for daily driving, towing. Level 2- "Light Tow" +80HP. Ideal for daily driving, light towing. Level 3- "Street MPG" +125HP. Ideal for daily driving. Level 4- "Street " +150HP. Ideal for daily driving. Level 5- "Race" +180HP. Ideal for performance applications. *** Shift on the Fly feature only available on the Pick Up 2011-2019 Models. It will not work on Cab & Chassis. However, you still will get the 4 different tune files to use. TRANSMISSION TUNINGS Transmission Tunes are included in all models. IMPORTANT BDX/X4 INFORMATION This tune is only compatible with trucks with OEM air intake systems or S&B air intake systems. Other intakes will not be compatible. The tune we create for the BDX/X4 is a custom delete tune. You do NOT need to send us your VIN for the BDX/X4 device. We will ship it to you with the custom tune already preloaded onto the device. Just plug it into your vehicle to upload the tune. Sometimes, your device may show an error code. Or may not recognize your truck. All you have to do is update the device by connecting it to your computer.This is a simple process and we will email you instructions on troubleshooting this problem in case it happens. If you get stuck, contact us at support@thedieseldudes.com IMPORTANT INSTALLATION INFORMATION Not tech savvy? Nervous about the software or potentially frying your truck? No worries! With every purchase, we send you a step-by-step instruction guide. And yes, if you run into any technical issues, we got your back. You can contact us anytime and we’ll resolve any issues you may encounter. If you run into issues, open a support ticket here HOW TO ACCESS TECH SUPPORT Sometimes, your Tuner may show an error code. Do not panic. It is an easy fix. Every vehicle is unique. In the event that you receive an error code, don’t worry. These issues are super easy to resolve. All you need to do is click this link to create a ticket Our tune technicians will respond to your request within 1 business day. FREQUENTLY ASKED QUESTION Q: Do I have to delete ALL emissions parts? You must delete the DPF at the minimum. EGR deletes are recommended, unplug the wiring harness if you don't delete it. With this tune you can unplug all other exhaust related sensors. Q: Does the BDX need to remain plugged in? Once the delete tune is installed, you can unplug the tuner. You will need to plug it in to switch the power level. Q: Can this tune multiple trucks? No. This tune is built to order to your specific truck and is locked to the VIN once installed. Q: Will this save my stock tune just in case? Yes. You can revert your truck back to factory settings anytime SHIPPING AND RETURNS We will process your order within 2 business days. Standard shipping will take 4-8 business days. Express Shipping is available at the end of checkout and will take 2-3 business days.* Note: Alaska, Hawaii and some Canadian locations will be subject to additional freight charges BDX Return Policy The BDX contains a built to order custom tune file and as a result cannot be returned. If the tuner is faulty, we will exchange it for a new one. If you have questions please reach out to our team at sales@thedieseldudes.com

USD 1049.00

EFI Live Autocal V3 Dodge Ram 6.7L Cummins 2007-2021 | Delete Tuner

NO MORE EMISSION CODES When you install the delete tune, your truck will no longer have emission related codes or warnings. This includes all 1) “See Dealer” codes 2) Check engine codes 3) “Exhaust system service required” codes 4) Limp Mode codes 5) Other emissions related diagnostic codes BENEFITS By deleting the factory emission system which has been suffocating your diesel, you’ll immediately notice a night and day difference. It will perform better in every imaginable way, including speed, fuel economy (5 mpg increase on average), and fewer trips to the repair shop.Over time, the kits pays for itself with the fuel savings alone. That’s not even considering how many costly trips to the dealer you’ll be saving yourself. The last benefit is peace of mind, knowing your truck no longer has a ticking time bomb attached to it. HOW DOES IT WORK? The EFI Live delete tuner will permanently upgrade your truck to work without the suffocating factory emissions system. This means you can remove ALL emissions-related parts and sensors for good, including the: - DPF (Diesel Particulate Filter) - DEF tank (Diesel Exhaust fluid) - EGR System (Exhaust Gas Recirculation) - CAT (Catalytic Converters, including DOC and NOX, etc.) This is made possible by our custom delete tunes that wipe away the emissions system from your truck’s computer.Steps: You will then use the EFI Live V8 software (Free to install) to download the delete tune from your computer to your EFI Live device.We will provide basic instructions on how to do this, but please be aware, a Windows 7+ Computer Required is required, no Macs or old PCs. After your download the delete tune into your EFI Live device, plug the EFI Live into your OBDII port (under your steering wheel).Follow the tune installation instructions we sent you. (Tech support is also available). Once the pesky emissions system is “deleted” from your truck’s programming, you can proceed to remove all of the parts that are holding your diesel back from running at its best. You will need to install a DPF Delete Pipe after you install this tune. WHAT’S INCLUDED? 1) EFI Live Autocal with all required cables and accessories, unlock cables provided for 2018+ models. 2) Delete Tune customized to your specific truck (NOT Preloaded, requires Windows 7+ computer to install). 3) CSP4/5 Switch for shifting power levels on the fly (2007.5-2018 models only) 4) Transmission Tuning ( 68RFE ONLY) 5) Step by Step Delete Tune Installation Instructions (emailed to you) COMPATIBILITY Truck years : 2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021 6.7L. Models: Compatible with Ram 2500, 3500, 4500 & 5500. Pick Up and Cab & Chassis models IMPORTANT CAB & CHASSIS INFORMATION All Cab & Chassis trucks only come with a single tune fileIt is a +50HP tune.A Cab & Chassis truck is one that says "Incomplete Vehicle" below the VIN on the registration sticker, typically found on the driver door. Most Cab & Chassis trucks are the 4500 and 5500 models. 2007-2010 Cab&Chassis models must be equipt with DUAL fuel tanks ONLY. For all Cab & Chassis trucks, please reach out to our team to make sure of compatibility. PHONE : (888) 830-2588 Ext 2 EMAIL : SALES@THEDIESELDUDES TUNE HORSEPOWER SETTINGS The Custom EFI Live Tune Includes multiple power levels so you can run your truck the way you want to. The included CSP4/5 switch will let you change between the power levels in real time (aka: "Shift on The Fly"). 2007-2018 models only. 2007-2018 Ram 6.7L Models ( Includes Shift On the Fly ) Level 1: "Stock" +0HP. Ideal for daily driving, towing, and best MPG. Level 2: +65HP. Ideal for daily driving, towing. Level 3: +100HP. Ideal for daily driving, towing. Level 4: +130HP. Ideal for performance applications. 2019-2021 Ram 6.7L Models (No Shift on the fly) Level 1: "Stock" +0HP. Ideal for daily driving, towing, and best MPG. Level 2: +45HP. Ideal for daily driving, towing. Level 3: +70HP. Ideal for daily driving, towing. Level 4: +100HP. Ideal for performance applications. COMPUTER NEEDED. MINIMUM SYSTEM REQUIREMENTS To make sure you don't run into any problems with your EFI Live delete tuner, make sure your computer or laptop meets the minimum system requirements.Software: EFI Live Scan & Tune Software V8. Download it for free at EFI Live's website.Operation System: PC or Laptop with Windows 7, 8, 8.1, 10 or 11. Not compatible of Macintosh or Linux. Connectivity: One available USB port to connect the EFI Live tuner to your computer.Display: We recommend a standard monitor or laptop screen.Storage: Minimum of 1GB of available hard drive space. IMPORTANT INSTALLATION INFORMATION Not tech savvy? Nervous about the software or potentially frying your truck? No worries! With every purchase, we send you a step-by-step instruction guide. And yes, if you run into any technical issues, we got your back. You can contact us anytime and we’ll resolve any issues you may encounter. If you run into issues, open a support ticket here HOW TO SEND US VEHICLE INFORMATION The tune we create for the EFI Live is a custom delete tune. After purchasing the EFI Live bundle, you will be emailed a vehicle information form. You are required to provide the following information: 1) VIN 2) Year/Make/Model 3) Transmission Type 4) Transfer Case Type 5) Tire Size 6) Any Vehicle Modifications Once we receive this information, we need 1-2 business days days to process your custom tune. HOW TO ACCESS TECH SUPPORT Sometimes, your EFI Live device may show an error code. Do not panic. It is an easy fix. Every vehicle is unique. In the event that you receive an error code, don’t worry. These issues are super easy to resolve. All you need to do is open a support ticket here Our tune technicians will respond to your request within 1 business day. We will email you the updated version with step by step instructions on how to download it on your EFI Live device. SHIPPING AND RETURNS Processing & ShippingAfter you place your order, please fill out the vehicle information form that is emailed to you. We will require this form to be filled out before we are able to ship your order.Once we receive this form, we need 1-2 business days to create your tune. With standard shipping, you will receive your tuner in 4-8 Business days Expedited shipping is available at checkout which will reach you in 2-4 business days.* Note: Alaska, Hawaii and some Canadian locations will be subject to additional freight chargesReturn/Refund Policy The EFI Live is a built to order product and not eligible for refunds and cancellations. We guarantee the tuner will work. If you received a faulty or damaged tuner we will replace it.

USD 899.00

CCV Delete Kit | Dodge 6.7 Ram Cummins 2007.5-2024

✅Best Selling Ram Cummins Closed Crankcase Ventilation (CCV) Delete Kit ✅ DIY Friendly Installation With Instructions ✅ Improves Turbo reliability ✅ Shipping Included In Price Delete Kit Details Complete CCV Delete Kit Compatible with 2500, 3500 models. Fits Cab & Chassis models Eliminate the following components Closed Crankcase Ventilation (CCV) Prevents oil droplets from re-entering the intake system Notice no more hot air and oil stuffed into the turbo Engine will receive clean and fresh air Includes all hardware and gaskets Features Serviceable Filter Stainless Steel Hose Clamps Billet PCV Plug Easy and Fast Installation Shipping We will process your order within 1 business day. Standard shipping will take 4-8 business days. Express shipping available at the end of checkout and will take 1-3 days. * Note: Alaska, Hawaii and some Canadian locations will be subject to additional freight charges 30 Day Return Policy We accept returns within 30 days of you receiving the kit, so long as the kit is unused. Once the kit is installed, we no longer accept returns. Buyer is responsible for return shipping & restocking fees. If your kit was damaged in transit, please contact our team at sales@thedieseldudes.com

USD 109.00

EZ LYNK AUTO AGENT DPF Delete Tune | Lifetime Support Pack | Dodge Ram Cummins

Compatible Tuner EZ-Lynk Auto Agent 3.0 & EZ-Lynk Auto Agent 2.0 Description Life Time Support Pack | CSP4/5 The Lifetime Support Pack is designed for the EZ-Lynk Auto Agent 3.0 and will allow you to run your truck with deleted DPF (Diesel Particulate Filter) and EGR (Exhaust Gas Recirculation) components. (FOR 6.7L )DSP5 Tune, meaning it includes 5 power levels and ability to shift on the fly (requires a switch) Transmission Tune Included for both models. Transmission tuning included but only for 68RFE transmission type. Power Levels For 2010-2021 6.7L Level 1 Level 2 Level 3 Level 4 Level 5 + 0hp + 40hp, + 80hp + 120hp, + 160hp **Please check with local and state legislation/regulations for legality of such product/s. We assume no liability for misuse of this product/s. Fitment: 2010-2021 Dodge 6.7L 2500-5500 Power Levels for 2014-2018 3.0L Tune 1 Tune 2 Tune 3 +0HP +30HP +60HP **Please check with local and state legislation/regulations for legality of such product/s. We assume no liability for misuse of this product/s. Fitment: 2014-2018 Dodge Ram 3.0L Pick Up models only FAQ Q: Do I need to send you my tuner/vehicle information? A: After you purchase the tune pack, we will email you a form to fill out that will require your tuner serial number, vehicle VIN & any info on vehicle modifications.

USD 899.00

15% off

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15% Off (Storewide) at The Diesel Dudes

$50 off

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$50 Off Full Delete Bundles at The Diesel Dudes

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Sustainability Score

42%

The company shows limited transparency regarding their environmental practices and supply chain management. While they offer some eco-friendly alternatives, their core business remains focused on traditional diesel performance products. They lack clear sustainability goals and reporting. Their packaging and shipping practices show room for improvement, and there's minimal evidence of environmental certifications or worker welfare programs. The company could benefit from implementing more robust sustainability initiatives and better documentation of their environmental impact.

About The Diesel Dudes

4.0 (1)

FAQs

: We run major sales during Black Friday/Cyber Monday, Memorial Day, and Labor Day weekends. We also offer seasonal promotions throughout the year, particularly during spring and fall.
: Yes, we offer a 5% discount to active duty military personnel and veterans with valid identification.
: The best deals are typically found during our Black Friday sale in November. Additionally, end-of-season clearances in January and July often feature significant discounts on previous season's inventory.
: Yes, we match prices from authorized dealers on identical items within 14 days of purchase.
: In the past month, The Diesel Dudes has launched 0 new promo coupons for shopper discounts. This indicates that The Diesel Dudes does not provide regular opportunities for customers to save money on their purchases.
: On average, The Diesel Dudes provides 5 discount coupons each month. Based on historical data, the average time between The Diesel Dudes coupon releases every 6 days. However, this rate depends on various factors such as seasonal promotions (Black Friday, Cyber Monday, etc.), product launches, or other marketing initiatives. To stay informed about upcoming discounts and promotions, we recommend checking The Diesel Dudes website regularly, subscribing to email newsletters, and following them on social media.
: The Diesel Dudes is offering 5 working store-wide codes, however they are also offering 21 additional discount codes with a best discount of 10% off
: terra.coupons is the #1 provider of discount codes for your favorite retailers, such as The Diesel Dudes. As a crowd-sourced platform for coupon codes, we accurate codes for over 10,000 stores. Save time and avoid expired codes by checking terra.coupons for the latest The Diesel Dudes discount codes.

Curated by

Aleksa P.

Deal Curator

Last updated December 2025

Aleksa is a deal finder from the tech-savvy city of Austin, Texas. A keen coder by day and a discount guru by night, Aleksa checks back regularly to update you with new deals.

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From the blog

2025-04-29

The Diesel Dudes Promo Codes and Coupons December 2025

The Diesel Dudes

Today's The Diesel Dudes discount codes

Featured The Diesel Dudes Products

Ram Cummins 6.7 Full Delete Bundle | 2022-2024

Tuner Harness Plug Kit | Ford Powerstroke 6.7L 2011-2022 | Shibby Engineering

Diesel Dudes Branded Apparel

Bench Flash Delete Tuning | Ram Ecodiesel 3.0 | 2014-2023

What The Diesel Dudes coupons are available today?

More The Diesel Dudes Products

BullyDog BDX for Ford Powerstroke 2011-2019 | Delete Tuner

EFI Live Autocal V3 Dodge Ram 6.7L Cummins 2007-2021 | Delete Tuner

CCV Delete Kit | Dodge 6.7 Ram Cummins 2007.5-2024

EZ LYNK AUTO AGENT DPF Delete Tune | Lifetime Support Pack | Dodge Ram Cummins

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