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Armored Protection for Your Sensitive DEF System. No-Drill 6mm Aluminum.
Bulletproof Your Super Duty's Weakest LinkThe ASFIR 4X4 Urea (DEF) Tank Skid Plate is the ultimate insurance policy for your Ford F-Series Super Duty. Modern diesel trucks rely on a plastic DEF tank that hangs vulnerable to rocks, stumps, and trail debris. One puncture can send your 6.7L Power Stroke into "Limp Mode," ending your trip instantly.
Engineered from 1/4" (6mm) premium aluminum, this plate has been rigorously tested on Lariat models with and without the Tremor package. It provides a shield that is far stronger than factory plastic covers without the rust and weight of steel.
Why ASFIR Protection:The Pain: The factory Urea tank is essentially an exposed plastic jug. A single rock can cause a $2,000+ repair and leave you stranded.
The ASFIR Solution: We utilize laser-cut aluminum and zinc-coated steel brackets to create a rigid cage that deflects impacts while maintaining maximum ground clearance.
Key Features: ASFIR Urea Tank Armor
1/4" (6mm) aluminum construction offers high impact resistance and natural corrosion protection in salty or wet environments.
Specifically tested to fit perfectly on Lariat 6.7L Diesel Crew Cabs, including those with the Tremor off-road package.
Unlike flat plates, ASFIR uses stiffening ribs to increase the structural integrity against point-loading from rocks.
Precision-cut drain holes and vents allow for easy cleaning and prevent mud buildup that could lead to overheating.
Heavy-duty steel brackets are zinc-coated to prevent galvanic corrosion between the aluminum and the truck frame.
Low-profile design hugs the tank closely to ensure you don't snag your underbody on obstacles.
Global Strength, Vehicle SpecificASFIR 4x4 has been a leader in off-road protection for over 30 years. This skid plate is Made in Israel and designed for the specific geometry of the 2017+ Ford Super Duty frame. It ensures your Urea tank is shielded from every angle during technical crawls.
11 lbs Lightweight 6mm Aluminum Plate 6.7L Diesel Optimized 100% Bolt-On Design
"The peace of mind this gives me on the job site is worth every penny. The plastic DEF tank on these F-250s is an accident waiting to happen. The ASFIR plate went on in about 30 minutes, fit perfectly around the Tremor components, and looks like it belongs there. High quality stuff."
- David K., F-250 Tremor Owner*Estimates based on dealership labor rates and parts. Does not include lost productivity.
| Feature | ASFIR Aluminum Plate | OEM Plastic Cover |
|---|---|---|
| Impact Resistance | ✓ Extreme (6mm Alum) | ✗ Low (Plastic) |
| Installation | ✓ 100% Bolt-On | Snap-on / Fragile |
| Weight | ✓ Lightweight (11 lbs) | ✓ Ultra-light |
| Serviceability | ✓ Integrated Drain Holes | ✗ Traps mud/moisture |
| Resale Value | ✓ Protects Vital Components | ✗ Damage risk is high |
Engineered for the 6.7L Power Stroke Diesel drivetrain. Fits the following configurations:
2017+ Ford F-250 / F-350 / F-450 Crew Cab Models (Lariat, Platinum, King Ranch) Tremor Package CompatibleNote: Designed specifically for trucks with the Urea (DEF) tank located between the frame rails.
CA Residents: ⚠️ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
No. Gas models do not utilize a Urea (DEF) tank. This skid plate is exclusively for the 6.7L Turbo Diesel models.
The plate is made from high-grade aluminum, which naturally resists rust. The mounting brackets are zinc-coated steel to provide additional protection against road salt and moisture.
No. This is a direct bolt-on kit. It uses existing factory mounting points on your Super Duty frame. All necessary hardware is included.
Yes, this is designed to be part of ASFIR's modular underbody protection system. It can be used alone or combined with their engine, transmission, and fuel tank plates for total coverage.
This plate is tested for F-450 Pickup models. Chassis Cab models often have different tank placements. Please verify your tank location matches the pickup layout before ordering.
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
We get it. You've got a lot of choice when it comes to online retailers.
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
