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Heavy-Duty 6mm Aluminum. No Drill Installation. Precision HD Drivetrain Defense.
The Drivetrain Defender for your Silverado HDThe ASFIR 4X4 Transmission & Transfer Case Skid Plate is engineered specifically for the high-torque, heavy-duty environment of the Chevrolet Silverado 2500 and 3500 HD. While the 6.6L Duramax provides the power to conquer the job site and the trail, its vital mid-chassis components remain dangerously exposed between the frame rails.
This skid plate is crafted from 1/4" (6 mm) laser-cut aluminum. It delivers professional-grade shielding for your Allison transmission and transfer case without the massive weight and rust potential of traditional steel plates, ensuring your HD truck stays agile and protected.
Why ASFIR Protection?The Pain: Silverado HD models have a long wheelbase and low-hanging drivetrain components. A single rock strike can crack a transmission housing, leading to a $7,000+ repair and a stranded vehicle.
The ASFIR Solution: Lightweight, reinforced 6mm aluminum armor that absorbs impact energy and protects your powertrain while maintaining factory ground clearance.
Key Features: Heavy-Duty Mid-Chassis Armor
The ASFIR kit uses a 100% bolt-on assembly. No holes in your frame means your Silverado maintains its structural integrity and resale value.
Laser-cut 1/4" aluminum offers an incredible strength-to-weight ratio. At only 26 lbs, it offers maximum defense without sagging your suspension.
Engineered with integrated stiffening and reinforcing ribs to provide even greater structural strength where the truck is most vulnerable.
Strategic air vents help reduce heat buildup around the transmission, ensuring your HD truck stays cool under heavy load or towing.
Marine-grade aluminum construction paired with zinc-coated steel brackets ensure your armor never rusts or corrodes.
Integrated drain holes allow easy removal of pebbles, dirt, or water that may get caught between the skid and the chassis.
Vehicle-specific engineering ensures precision alignment and minimal clearance loss for a factory-integrated look.
Developed and tested in extreme desert environments to ensure reliability wherever the trail takes you.
Tested in the World's Harshest TerrainWe don't cut corners. The ASFIR 4X4 Transmission Skid Plate features high-quality aluminum alloy construction with heavy-duty structural reinforcement. It is held together by zinc-coated steel brackets to prevent loosening and corrosion even in salt-heavy or wet environments.
26 lbs Lightweight 6mm Thickness Duramax Engine Specific Israel Made In
"The transfer case on my Silverado 2500 was sitting out there like a target. I installed the ASFIR plate and it's already saved my drivetrain twice. It fits perfectly around the crossmembers. Being aluminum, I don't have to worry about it rusting where it gets scraped. A must-have for the HD series."
- David R., Silverado 2500 HD Owner Important Fitment NoteCheck Your Build: This skid plate is specifically designed for 4x4 models with the 6.6L Diesel engine. Fitment on gasoline models or custom 2WD chassis may require modification.
*Repair costs are dealership estimates for GM HD trucks. Does not include towing or work downtime.
| Feature | ASFIR Aluminum | Generic Steel Plates |
|---|---|---|
| Installation | ✓ 100% Bolt-On (No Drill) | ✗ Often Requires Drilling |
| Corrosion | ✓ Naturally Rust-Proof | ✗ Rusts if paint chips |
| Weight | ✓ Lightweight (26 lbs) | ✗ Heavy (65+ lbs) |
| Heat Management | ✓ Integrated Air Vents | Standard Flat Plates |
| Origin | ✓ Made in Israel | Imported |
Designed specifically for the heavy-duty Chevrolet and GMC chassis. Fits the following specifications:
| Year | Make | Model | Fuel Type | Engine Liter | Gear Type | Wheel Drive |
|---|---|---|---|---|---|---|
| 2020 - current | Chevrolet | Silverado 2500 HD | DIESEL | 6.6L | Automatic | 4WD |
| 2020 - current | Chevrolet | Silverado 3500 HD | DIESEL | 6.6L | Automatic | 4WD |
| 2020 - current | GMC | Sierra 2500 HD | DIESEL | 6.6L | Automatic | 4WD |
| 2020 - current | GMC | Sierra 3500 HD | DIESEL | 6.6L | Automatic | 4WD |
Expert Tip: This skid plate is an essential component of a complete front-to-back system. It integrates perfectly with ASFIR's front, fuel tank, and urea tank plates for total underbody defense.
CA Residents: ⚠️ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Clearances and mounting locations often vary between Diesel and Gasoline models due to exhaust routing and transmission housing shapes. This specific model is tested and verified for the 6.6L Diesel powerplant.
No. This is a 100% no-drill installation. It utilizes the factory threaded holes and mounting points already present in the GM HD frame architecture.
The ASFIR plate is designed to hug the transmission and transfer case as closely as possible. You will experience negligible clearance loss, which is far outweighed by the smooth surface that allows the truck to slide over obstacles.
Yes. The plate features integrated drainage holes. Most routine maintenance can be performed with the plate on, though dropping the plate only takes a few minutes if full pan access is required.
No. The plate includes integrated air vents specifically designed to maintain factory-spec airflow around the transmission housing, ensuring no negative impact on thermal performance.
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
