Looking for the best diesel accessories to keep your truck in top shape? I’ll share my favorite tools and gear that have saved me time, money, and kept my ride running strong.
Diesel trucks deserve the best care. The right accessories make a big difference. They keep your ride strong and safe.
I’ve worked with diesel tools that turned small problems into quick fixes. A solid setup saves time and money.
I’ll guide you to the top picks that really perform. Let’s find the gear your truck will thank you for.
List of Top 10 Diesel Accessories
| Image | Title | Best For | Price |
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LAUNCH Millennium Master 2.0 OBD2 Scanner, Check Engine/ABS/SRS/Transmission Diagnostic Scan Tool with 13 Service Functions, Support Battery Health/Start/Charging Test, Auto VIN (Use in The US & CAN) |
Perfect for car owners, DIY mechanics, and auto repair pros who want fast, clear, and accurate diagnostics. If you value saving time and avoiding costly guesswork, this tool is for you. |
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LAUNCH Millennium HD ProA Heavy Duty Truck Scanner All System Diesel Diagnostic Scan Tool with 8 Service Functions, for Freightliner Peterbilt Kenworth Western Star Mack (Use in The US & CAN) |
Perfect for truck owners, fleet managers, and diesel mechanics who need fast, accurate, and all-system diagnostics to keep heavy-duty vehicles running at their best. Ideal for anyone who wants pro-level results without wasting time or money. |
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Certified Dirty Idle Sticker Decal – Funny Window Bumper Sticker for Diesel Trucks | 4″ x 6″ | Made in The USA |
Perfect for diesel truck owners who love to show off their bold sense of humor and make their ride stand out. Great for anyone who wants a fun, durable decal that lasts for years. |
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Carrotez Diesel Fuel Cap Silicone Ring 2PCS with 2 Stickers, Gas Cap Truck Accessories Replacement Parts – Green |
Perfect for diesel car and truck owners who want a quick, low-cost fix for a worn fuel cap seal. Great for anyone who wants to save money and clearly mark their fuel type. |
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10591D Locking Fuel Gas Cap For Diesel Trucks Fuel Tank Fit for Chevrolet Dodge Ford GMC Etc Car Fuel Cap |
Perfect for diesel truck owners who want to protect fuel, save money, and install it fast without a mechanic. Great for anyone who values a tight seal and better fuel efficiency. |
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Diesel Fuel Cap for Dodge Ram, Aluminum Factory Combo Pack – Magnetic Diesel Fuel Cap & DEF Cap for RAM 1500 2500 3500 Trucks (2013-2019) |
Perfect for Ram truck owners who want a strong, durable, and easy-to-use fuel cap. Great for anyone who cares about protecting their engine and keeping it clean. |
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Hot Shot’s Secret Everyday Diesel Treatment 16 Ounce Squeeze Bottle (HSSEDT16ZS) |
Perfect for diesel owners who want more power, better fuel economy, and longer engine life. Ideal for anyone who needs to protect their fuel system and keep their engine running smooth and strong every day. |
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Cummins Mens Red/Adjustable Hat, Red, Medium US |
This hat is perfect for Cummins fans who want to show their pride every day. It’s great for anyone who loves a comfortable fit, stays cool with a mesh back, and wants a stylish cap they can wear all year. |
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Zlirfy Diesel Fuel Cap,Car Accessories Aluminum Fuel Cap Combo Pack,Diesel Fuel tank Cap,Magnetic Green Diesel Fuel Cap and Anti-lost rope-Non-magnetic Blue DEF Cap for 2013-2018 Ram 1500 2500 3500 |
Perfect for Ram truck owners who want strong, stylish, and long-lasting fuel caps. Ideal for anyone who values easy installation and protection for their fuel system. |
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S&S Diesel Motorsport® Gen2.1 CP4.2 Disaster Prevention Kit Compatible with 2011+ 6.7 Powerstroke (CP4-6.7F-BP-G2.1) |
Perfect for 6.7 Powerstroke owners who want to protect their engine and avoid costly fuel system repairs. Ideal for anyone who values proven performance and easy installation. |
Detailed Reviews
Here are the Best Diesel Accessories chosen with real care and expert checks. Each item is tested for quality, performance, and value so you can buy with confidence. This guide makes it easy to find the right tools and upgrades for your truck. Get ready to see which picks will truly stand out for you.
1. LAUNCH Millennium Master 2.0 OBD2 Scanner, Check Engine/ABS/SRS/Transmission Diagnostic Scan Tool with 13 Service Functions, Support Battery Health/Start/Charging Test, Auto VIN (Use in The US & CAN)
The LAUNCH Millennium Master 2.0 is a smart and easy-to-use OBD2 scanner built for car owners who want control. It has a big 5″ HD touch screen so you can see results and graphs clearly.
It offers 13 reset functions and checks 4 key systems to keep your car safe. It can test your battery through Bluetooth. It works with most 1996+ US, CAN, EU, and Asian cars.
| Pros | Cons |
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Perfect For:
Perfect for car owners, DIY mechanics, and auto repair pros who want fast, clear, and accurate diagnostics. If you value saving time and avoiding costly guesswork, this tool is for you.
Ready to Purchase?
2. LAUNCH Millennium HD ProA Heavy Duty Truck Scanner All System Diesel Diagnostic Scan Tool with 8 Service Functions, for Freightliner Peterbilt Kenworth Western Star Mack (Use in The US & CAN)
The LAUNCH Millennium HD ProA is built for serious truck diagnostics. It works fast and gives clear results. You can use it with many big truck brands in the US and Canada.
It checks all major systems like engine, brakes, and transmission. This helps you find problems quickly.
It also has 8 special functions like brake reset and injector coding. The clear 3.97-inch screen makes it easy to read and use.
| Pros | Cons |
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Perfect For:
Perfect for truck owners, fleet managers, and diesel mechanics who need fast, accurate, and all-system diagnostics to keep heavy-duty vehicles running at their best. Ideal for anyone who wants pro-level results without wasting time or money.
Ready to Purchase?
3. Certified Dirty Idle Sticker Decal – Funny Window Bumper Sticker for Diesel Trucks | 4″ x 6″ | Made in The USA
Show off your diesel pride with this Certified Dirty Idle sticker. It’s bold, funny, and made to turn heads.
Built from high-quality outdoor vinyl, it’s tough enough to last 7+ years. Rain, sun, or mud—this decal stays sharp.
It’s 4″ x 6″. It’s Made in the USA. It’s ready for your truck.
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Perfect For:
Perfect for diesel truck owners who love to show off their bold sense of humor and make their ride stand out. Great for anyone who wants a fun, durable decal that lasts for years.
Ready to Purchase?
4. Carrotez Diesel Fuel Cap Silicone Ring 2PCS with 2 Stickers, Gas Cap Truck Accessories Replacement Parts – Green
Keep your diesel fuel cap working like new. Just slip on the Carrotez Silicone Ring and save money.
No need to buy a new cap. The silicone ring fits most cars and trucks. It’s easy to use.
Each pack includes 2 rings and 2 stickers. Stick one on your car to show it’s diesel only. That helps avoid mix-ups at the pump.
| Pros | Cons |
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Perfect For:
Perfect for diesel car and truck owners who want a quick, low-cost fix for a worn fuel cap seal. Great for anyone who wants to save money and clearly mark their fuel type.
Ready to Purchase?
5. 10591D Locking Fuel Gas Cap For Diesel Trucks Fuel Tank Fit for Chevrolet Dodge Ford GMC Etc Car Fuel Cap
Keep your fuel safe and your truck running at its best with the 10591D Locking Fuel Gas Cap. It’s built to fit Chevrolet, Dodge, Ford, GMC and more.
It gives a tight seal. It helps stop fuel loss. It cuts vapor emissions.
Made from high-quality ABS plastic with a strong rubber ring, it’s tough and heat-resistant. Easy to install yourself, it saves you time and money.
| Pros | Cons |
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Perfect For:
Perfect for diesel truck owners who want to protect fuel, save money, and install it fast without a mechanic. Great for anyone who values a tight seal and better fuel efficiency.
Ready to Purchase?
6. Diesel Fuel Cap for Dodge Ram, Aluminum Factory Combo Pack – Magnetic Diesel Fuel Cap & DEF Cap for RAM 1500 2500 3500 Trucks (2013-2019)
Keep your Ram diesel truck running clean and protected with this aluminum fuel cap combo. It fits 2013-2019 Ram 1500, 2500, and 3500 models with a capless fuel system.
The upgraded magnetic base holds the cap to your fuel door while you refuel. CNC-machined aluminum makes it stronger and longer-lasting than plastic caps.
It installs fast. It seals tight. It keeps dirt out.
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Perfect For:
Perfect for Ram truck owners who want a strong, durable, and easy-to-use fuel cap. Great for anyone who cares about protecting their engine and keeping it clean.
Ready to Purchase?
7. Hot Shot’s Secret Everyday Diesel Treatment 16 Ounce Squeeze Bottle (HSSEDT16ZS)
Give your diesel engine the boost it craves. This treatment boosts cetane up to 7 points for faster starts and smoother runs. Enjoy more power every time you hit the road.
It helps increase performance and fuel economy. You save fuel and get more miles.
This formula stabilizes fuel and disperses moisture to protect your system. It also adds lubricity to reduce wear. Plus, it helps prevent rust and corrosion for lasting engine life.
| Pros | Cons |
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Perfect For:
Perfect for diesel owners who want more power, better fuel economy, and longer engine life. Ideal for anyone who needs to protect their fuel system and keep their engine running smooth and strong every day.
Ready to Purchase?
8. Cummins Mens Red/Adjustable Hat, Red, Medium US
Show your Cummins pride with this bold red adjustable hat. The official licensed logo makes it stand out anywhere.
Stay cool with the mesh back that gives great airflow. The polyester-cotton blend is tough and easy to clean.
It fits just right. It feels light. It looks sharp.
| Pros | Cons |
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Perfect For:
This hat is perfect for Cummins fans who want to show their pride every day. It’s great for anyone who loves a comfortable fit, stays cool with a mesh back, and wants a stylish cap they can wear all year.
Ready to Purchase?
9. Zlirfy Diesel Fuel Cap,Car Accessories Aluminum Fuel Cap Combo Pack,Diesel Fuel tank Cap,Magnetic Green Diesel Fuel Cap and Anti-lost rope-Non-magnetic Blue DEF Cap for 2013-2018 Ram 1500 2500 3500
Keep your Ram diesel truck protected and looking sharp with this Zlirfy Fuel Cap Combo Pack. You get a magnetic green diesel cap and a blue DEF cap with an anti-loss rope.
Made from CNC billet aluminum, these caps are strong and long-lasting. They seal tight to block dust, water, and snow. They help you avoid costly engine repairs.
Installation is quick and simple. Just twist and tighten—done. The laser-engraved design adds a bold, stylish touch to your truck.
| Pros | Cons |
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Perfect For:
Perfect for Ram truck owners who want strong, stylish, and long-lasting fuel caps. Ideal for anyone who values easy installation and protection for their fuel system.
Ready to Purchase?
10. S&S Diesel Motorsport® Gen2.1 CP4.2 Disaster Prevention Kit Compatible with 2011+ 6.7 Powerstroke (CP4-6.7F-BP-G2.1)
Protect your 6.7 Powerstroke from costly CP4 pump failure with the S&S Diesel Motorsport® Gen2.1 Disaster Prevention Kit. It’s proven to stop harmful debris before it reaches your fuel system.
It’s easy to install with OE-style quick connects. It filters debris before it gets to your tank. It fits all 2011–2025 models with one part number.
| Pros | Cons |
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Perfect For:
Perfect for 6.7 Powerstroke owners who want to protect their engine and avoid costly fuel system repairs. Ideal for anyone who values proven performance and easy installation.
Ready to Purchase?
Buying Guide
Diesel trucks work hard every day. The right accessories keep them strong. I’ve used gear that turned big jobs into quick wins.
- Compatibility: Always check if the accessory fits your truck model and year. A perfect fit means better performance and no wasted money.
- Build Quality: Look for strong materials like aluminum, ABS plastic, or high-grade silicone. Good build quality lasts longer and handles tough use.
- Functionality: Choose tools or parts that solve a real problem for your truck. Extra features like Bluetooth or magnetic bases can save time.
- Ease of Use: Pick accessories that are simple to install and operate. This saves you from paying for extra labor.
- Durability: Go for products that can handle heat, moisture, and dirt. Long-lasting gear means fewer replacements.
- Performance Boost: Some accessories improve engine power or fuel economy. These upgrades can pay for themselves over time.
- Safety: Items like locking fuel caps or diagnostic tools help protect your truck and prevent costly damage.
- Maintenance Help: Tools that make repairs and checks easier keep your truck in top shape. This reduces downtime.
- Style and Pride: Stickers, hats, or custom caps let you show your diesel pride while adding a personal touch.