Top 9 DEF Fluid Locking Cap – Automotive Replacement Fuel Tank Caps

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1. WHDZ

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WHDZ Ram Diesel Cap Magnetic Billet Aluminum Fuel Cap and Blue Cap Combo Ram def Cap Gas Cap

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WHDZ #ad - Green cnc billet aluminum and blue cnc billet Aluminum, good looking they are functional, this combo will keep dirt and debris out of the fuel system. Need to replace your old plastic fuel cap and blue caP with a CNC billeted aluminum cap from WHDZ.

Carefully designed with enhanced durability, Buna-N Nitrile O-ring. Upgrade your ram cummins or ecodiesel by adding our green fuel cap and blue cap to your Ram diesel engine today! Fuel cap - this ram fuel cap is crafted with anodized aluminum which wont be impacted even after long-term exposure. Keep your engine running smoothly with an anodized aluminum FUEL CAP and blue CAP that is far more reliable and effective than the cheap red plastic cap that the manufacturer provides and your plastic diesel exhaust fluid cover.
BrandWHDZ #ad
ManufacturerWHDZ #ad
Part Number60059003-US

2. JOJOY LUX

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JOJOY LUX Diesel Fuel Cap Compatible with Dodge Ram, Aluminum Factory Combo Pack, Magnetic Diesel Fuel Cap & DEF Cap for RAM 1500 2500 3500 Trucks 2013-2019

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JOJOY LUX #ad - Package1*magnetic green ram diesel fuel Cap & 1* Blue DEF Cap compatible with Dodge Ram Exhaust Fluid. Magneticneodymium magnet in bottom of fuel cap.

When refueling simply place the fuel cap against the steel fuel door and the magnet will conveniently hold it. Applicationdiesel fuel caps used for 2013 -2019 ram 1500 2500 3500 diesel trucks with a capless fuel system, Cummins and Eco-diesel vehicles with 3. 0l v6 engines. High qualityboth caps are cnc machined made from 6061-T6 Light weight Aluminum, for longer-lasting durability and reliability over your stock plastic cap. Convenienteasy installation to replace the old with our dual O-ring system caps to protect your diesel engine from dirt, dust and grime.
BrandJOJOY LUX #ad
ManufacturerJOJOY LUX #ad
Part NumberJ-Dodge TC
ModelJ-Dodge TC

3. DEF

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Billet Aluminum Green Fuel Cap Magnetic and Blue DEF Cap for Dodge Ram Cummins 2013-2017 Auto Parts

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DEF #ad - Simply remove your old DEF cap from the tether and reattach your new fluid cap in its place. Safe cap – neodymium magnet in bottom of dodge diesel fuel cap, when refueling simply place the fuel cap against the steel fuel door and the magnet will conveniently hold it.

Both caps are crafted with anodized aluminum which won’t be impacted even after long-term exposure. Improved reliability – both caps are carefully crafted with CNC billeted aluminum for longer-lasting durability and reliability over your standard plastic cap. Airtight, precision fit – keep dirt from entering your fuel system thanks to our dual O-ring system of DEF cap that protectors your engine while you’re off road.

Simply remove your old fuel cap and reattach your new fuel cap in its place. Easy installation – installing your new cap takes seconds. Versatile compatibility – both caps are designed to fit 2013-2017 Dodge Ram Diesel Cummins and EcoDiesel trucks with 3. 0l v6 engines. Easy.
BrandDEF #ad
ManufacturerDEF #ad
Part Number4347559887
Model13
WarrantyManufacture warranty for 90 days after purchase date

4. Benefast

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BC3Z5J225KA Diesel Exhaust Fluid DEF Tank Reservoir Heater Assembly Kit Fits for Ford F-250 F-350 F-450 F-550 Super Duty 6.7L V8 2011-2016 Replacement# 904-372

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Benefast #ad - If you are experiencing a cel with a dtc code of P20BA or car is operating at a reduced power then may have a problem with DEF reservoir heater. Symptoms of a bad or failing def hheater: - faulty connections at the def heater due to it's location and enviroment; - Faulty DEF Heater Element; - Reduced engine power, message center/instrument cluster displaying "Engine Power Reduced".

Replacement ppart number: bc3z5j225ka, 904372, bc3z5j225l, bc3z5j225ka, bc3z-5j225-l, 118826, EM1506URH, 904-372. Ford terms the whole unit the "reductant heater and sender assembly". Diesel exhaust fluid is a non-hazardous combination of de-ionized water and urea that helps reduce the emission of heavy-duty vehicles. Turn off that 'check engine' light and restore proper drivability with our direct replacement DEF heaters.

This diesel exhaust fluid heater fits for the following vehicles: f ord f-250 super duty 6. 7l v8 2011-2016, ford f-350 super duty 6. 7l v8 2011-2016, ford f-450 super Duty 6. 7l v8 2011-2016, ford f-550 super Duty 6. 7l powerstroke v8 2011 2012 2013 2014 2015 2016. This diesel exhaust fluid DEF Reservoir Heater Assembly Kit includes tank seal and hardware kit.
BrandBenefast #ad
ManufacturerBenefast #ad
Part NumberBC3Z5J225KA 904-372 EM1506URH

5. Ronin Factory

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Ronin Factory Combo Pack Magnetic Diesel Fuel Cap + DEF Cap Accessory for Dodge RAM Truck 1500 2500 3500 2013-2018 with 6.7 Cummins EcoDiesel Easy Grip

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Ronin Factory #ad - You will receive 1 ram diesel fuel cap easy grip & 1 RAM DEF Cap. Save $$$ by purchasing the combo pack compared to buying individually. O-rings are diesel compatible Green Diesel Fuel cap comes with 2 sizes of O-Rings for your preferred fit.

This combo set is compatible with dodge ram evap emission systems. A strong, rare earth magnet holds the ram Diesel cap to any metal surface on the truck during fill-ups. Magnetic dodge ram diesel fuel cap keeps dirt & water out of your fuel tank on all Capless Dodge Ram Diesel Trucks 2013+ May not fit 2019 models. The def cap features a smooth and easy to grip handle that will slide and lock into place with a smooth-as-butter feel! Machined from AIRCRAFT GRADE Aluminum and Anodized Green & Blue with laser logo to help ensure no fueling mix-ups.
BrandRonin Factory #ad
ManufacturerRonin Factory #ad
Part Number9854 DEF DIESEL FUEL CAP
Model13

6. Freight Defense

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Freight Defense 100302 Locking DEF Cap Freightliner/Kenworth/Peterbilt/Western Star

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Freight Defense #ad - Designed to protect rear entry swing doors. Works with your vehicles existing key fob and factory keyless entry system. Fit type: Vehicle Specific. Mounting Kit included. Designed to protect side entry slide doors. Installed inside the vehicle door so it is hidden from view.
BrandFreight Defense #ad
ManufacturerFreight Defense #ad
Part Number100302
Model100302

7. Freight Defense

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Freight Defense 100303 Locking DEF Cap Hino/Isuzu

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Freight Defense #ad - Designed to protect rear entry swing doors. Designed to protect side entry slide doors. Installed inside the vehicle door so it is hidden from view. Mounting Kit included. Works with your vehicles existing key fob and factory keyless entry system.
BrandFreight Defense #ad
ManufacturerFreight Defense #ad
Part Number100303
Model100303

8. Henzxi

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Henzxi Dodge Fuel System Cap Magnetic Ram Diesel Billet Aluminum Green Fuel Cap and Non-magnetic Blue DEF Cap Combo Pack for 2013-2018 Dodge Ram Truck 1500 2500 3500

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Henzxi #ad - Protection and guard - henzxi diesel fuel caps are well sealed and can keep out dust, snow and others to protect your fuel system, water, rain, saving you costly engine repairs. Guarantee - One year warranty and lifetime friendly service. Safety and durable - both dodge ram fuel caps are crafted with anodized billet aluminum which won't be impacted even after long-term exposure. Fitment - both fuel caps fit 2013 2014 2015 2016 2017 2018 dodge ram 1500 2500 3500 diesel trucks with a cap less fuel system. Easy to install - Direct replace the old one.
BrandHenzxi #ad
ManufacturerHenzxi #ad
Part NumberHZX-48

9. DEF

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DEF Compatible with Aluminum Billet Exhaust Fluid Cap Dodge Ram Cummins 2013-2017

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DEF #ad - Easy. Improved reliability – our def is carefully crafted with cNC 6061-T6 billeted aluminum for longer-lasting durability and reliability over your standard plastic cap.

Airtight, precision fit – keep dirt from entering your fuel system thanks to our dual O-ring system that protectors your engine while you’re off road. Easy installation – installing your new def cap takes seconds. Simply remove your old cap from the tether and reattach your new fluid cap in its place. Def safe cap – this fluid cap is crafted with anodized aluminum which won’t be impacted by DEF even after long-term exposure. The “def” has been laser etched on the top of cap, which made the cap more beautiful.
BrandDEF #ad
Part NumberGM-SP-CAP-DEF-BU