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6mm Laser-Cut Aluminum. 100% Bolt-On. Essential Emissions System Defense.
Shield the Most Vulnerable Link in Your Cummins DrivetrainThe ASFIR 4X4 Urea (DEF) Tank Skid Plate is engineered to safeguard the sensitive Diesel Exhaust Fluid system on your RAM 2500 or 3500. While the Cummins engine provides unmatched towing power, the Urea tank is a notorious weak point—a plastic unit positioned where rocks, stumps, and road debris can easily cause catastrophic damage.
Precision-manufactured and trail-tested in extreme desert environments, this skid plate is crafted from 1/4" (6 mm) high-grade aluminum. It offers the perfect balance of extreme impact resistance and lightweight performance, ensuring your emissions system remains intact without adding unnecessary bulk to your Heavy Duty rig.
Why ASFIR Protection:The Pain: The factory DEF tank is plastic and sits in a high-impact strike zone. A single puncture triggers an immediate "Limp Mode," leading to expensive repairs and potentially leaving you stranded on the trail.
The ASFIR Solution: A lightweight, reinforced 6mm aluminum shield that absorbs impact and protects your emissions hardware while maintaining factory ground clearance.
Key Features: Precision DEF Armor
Bolts directly into factory mounting points on the RAM chassis. No cutting, drilling, or permanent modifications required.
Laser-cut 1/4" aluminum provides superior strength-to-weight ratio. At only 4 lbs, it offers maximum defense without affecting payload.
Engineered to fit both Short Wheelbase and Long Wheelbase RAM configurations seamlessly.
Integrated drain holes and vents allow water, mud, and debris to clear out, preventing long-term corrosion against the tank.
Over-Engineered for Real-World UseWe don't cut corners. This skid plate is designed specifically to complement the RAM structure. By using zinc-coated steel brackets for the main supports, we ensure the hardware remains corrosion-free and the plate stays securely fastened even after repeated trail hits.
4 lbs Ultra-Lightweight 6mm Aluminum Thickness Cummins Diesel Specific Bolt-On Install Type
"If you take your RAM 2500 off-road, the DEF tank is a ticking time bomb. It hangs down way too far. I installed the ASFIR plate in 20 minutes. It fits tight to the body and doesn't rattle. I've already taken a scrape on a jagged rock that would have definitely punctured the plastic. Best $200 insurance you can buy."
- Marcus D., RAM 2500 HD Owner*Repair costs are estimates. Does not include lost expedition time or vehicle downtime.
Fitment: RAM 2500/3500 HDPrecision-engineered specifically for the following heavy-duty configurations:
RAM 2500 / 3500 (2019+) Diesel Engine (Cummins 6.7L) Models Only Compatible with SWB & LWB WheelbasesExpert Tip: This skid plate is an essential component of a complete front-to-back system. It pairs perfectly with ASFIR's Engine, Transmission, and Fuel Tank plates for total underbody defense.
CA Residents: ⚠️ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
No. Aluminum naturally forms a protective oxide layer that prevents deep corrosion. Combined with our zinc-coated steel brackets, this system is built to survive salt, mud, and winter road brine indefinitely.
No. This is a 100% bolt-on system. It utilizes the factory threaded holes and crossmember points already present in the RAM HD frame architecture.
Yes. 1/4" (6mm) aluminum is the industry standard for high-end off-road armor. It provides excellent impact deflection and absorbs shock energy better than steel, while being much lighter and rust-proof.
No. The plate includes integrated air vents specifically designed to maintain factory-spec airflow around the tank, ensuring the fluid remains within safe operating temperatures.
No. Refilling is typically done from the designated fill port (near the fuel cap on newer models). This plate protects the tank housing from underneath and does not block access to fill ports.
California Residents
Prop 65 Warning- Product may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
Proposition 65 is a California law passed in 1986. Its goals are to protect drinking water sources from toxic substances that may cause cancer and birth defects and to reduce or eliminate exposures to those chemicals generally, for example in consumer products, by requiring warnings in advance of those exposures.
The regulation requires the State of California to revise and republish yearly a list of chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. The current list contains over 900 naturally occurring and synthetic chemicals. This regulation also requires manufacturers to place warnings on products that contain any of the chemicals listed by the State of California. No other states require warnings of this nature, and products with Prop 65 warning language are legal to sell in all states. Detailed information regarding requirements for compliance to the California Prop. 65 is can be found at: www.P65Warning.ca.gov
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Here's why we think you should shop with us at ExtrailAuto.
The wait time was more than I anticipated even after seeing the notification of long lead times. I have to give them props for giving some compensation for the excessive wait time. Having slightly larger holes would help with fitment. Had a hard time getting the front drivers side away from the pinch weld. Eventually had to use washers to add space away from the truck. Need to update pictures and instalation video for the new sliders they are now making
All packing and shipment were great, everything was there. I had to contract out the install because of arthritis, it took them two hours and looks perfect. Zero wind noise at any speed 0 to 100.
Absolutely love my new rack and roam cases. Appreciate the Sherpa crew as well for their hospitality while the installation was taking place.
Fit and finish is excellent. Looks great on the Bronco. No whistling noise at all, some additional wind noise over 60mph but not much different than it was without the rack. Assembly was not too difficult. Instructions and videos could be a little better.
The quality and dedication of the team at Sherpa is evident from the very first interaction with them, and is further proven in the product itself. This rack is well engineered, easy to assemble, easy to adjust, and holds up incredibly well with no loosening or rattling or shifting (even after over 200 miles of driving on poorly maintained roads). Currently operating with approximately 180 pounds of gear mounted on the bed rack and no issues at all so far. I expected the vibration to work the bolts loose over time, but every time I check they're all still snug. My only regret is that I didn't pull the trigger and get this rack sooner.
First of all, the team at Sherpa is full of passion for adventure and that passion shows in the quality of their products. This roof rack looks incredible and surprised me with it's sturdiness. No loosening of hardware, even after weeks of driving. Currently holding approximately 80 pounds of gear for everyday driving, plus an additional 110 strapped on top during a camping trip (and I even stood on top of the entire loadout). No warping, bending, twisting, or slipping. The fact that this matches the bed rack perfectly in height is the icing on the cake. Easily serves as a tie off for a tarp, rain fly, hammock, or whatever you need. Perfect for modular campsite setup and quick teardown.
I bought the Sherpa Crestone rack for my 2024 4Runner TRD Pro. Incredibly well-made and excellent design. Spend the extra , to get best roof rack in the market. You won’t regret it.
This is our first roof rack that we are going to use to put a RRT (roof top tent) on for back country trips. Well-built product that came with all the nuts, bolts and washers to complete the installation. Took about 1-1/2 to 2 hours install the rack. You will another person to help place the racks on top of the Jeep for final install. Overall, a great, well-built American product
Install was super easy. The quality was great. Customer service was quick to respond to any issues! I’ve already been getting compliments on it and what brand it is. This will be great for camping this year!
This is on my tundra absolutely solid rack looks fantastic extremely modular, which is why I went this route. I can use the whole rack when traveling and over landing then rock the chase rack only when the rest is not in use, I actually use the recovery traction board mounts for my shower room set up, which works amazingly just relocated the board somewhere shown in picture keep innovating TUWAand I’ll keep purchasing.
Good looking cat shields made of stainless steel with cooling holes. Priced well, easy install, no issues. Would buy again.
Great service from their staff. Robert help me through all the process with a request I had, he responded all emails in a timely manner and provided great help.
We received it within 3 days and installed the same day. Great awning and very well made.
the tent is very nice, comfortable and roomy.
Following the instructions was fairly easy. Its better to have second person to set it up. I really like the tent and the support that from ExtrailAuto. Really recommeded! Thanks
