1. Introduction
This manual provides instructions for the proper installation and maintenance of your Husky Liners Front Mud Guards, Model 58451. These mud guards are specifically designed to fit 2015-2020 Ford F-150 trucks equipped with OEM (Original Equipment Manufacturer) fender flares. They offer protection against mud, snow, dirt, and other road debris, safeguarding your vehicle's paint and undercarriage.
The mud guards are constructed from durable, impact-resistant thermoplastic material, engineered for a precise, tailored fit to your vehicle's fenders.
2. Product Components
Verify that all components are present before beginning installation.
- Two (2) Front Mud Guards (Left and Right)
- Installation Hardware (screws, clips, and potentially Husky Shield Film)

Image 1: Husky Liners Front Mud Guards (Model 58451) for Ford F-150. This image displays the two black thermoplastic mud guards, showing their contoured shape and mounting points.
3. Installation Instructions
Installation typically requires minimal tools and can be completed in a short amount of time. No drilling is required for most installations, utilizing existing factory mounting points.
Required Tools:
- Stubby Phillips Head Screwdriver (recommended for tight spaces)
- Clean Cloth or Alcohol Wipes
Installation Steps:
- Prepare the Installation Area: Clean the area around the fender well where the mud guards will be installed using a clean cloth or alcohol wipes. Ensure the surface is dry and free of dirt or debris for optimal adhesion if 3M tape is used.
- Position the Mud Guard: Hold the mud guard against the fender well, aligning it with the contours of your vehicle's fender and the existing factory mounting points. Ensure a snug fit.
- Secure with Factory Screws: Remove any existing factory screws from the fender well that align with the mud guard's mounting holes. Re-use these screws to secure the mud guard in place.
- Apply Clips (if applicable): If your kit includes clips, attach them to the designated areas on the mud guard and fender well to provide additional securement. Ensure clips are firmly seated.
- Install Husky Shield Film (if included): If your kit includes Husky Shield Film, apply it to the vehicle's paint where the mud guard will make contact to prevent rubbing and provide an invisible layer of protection. Follow the film's specific application instructions.
- Final Tightening: Once all screws and clips are in place, gently tighten all fasteners. Do not overtighten.
- Repeat for Other Side: Follow the same steps for the opposite side of the vehicle.

Image 2: A Husky Liners mud guard properly installed on the front wheel well of a Ford F-150, showing its seamless integration with the vehicle's fender flare.
4. Operation
Once installed, the Husky Liners Front Mud Guards operate passively by deflecting road debris away from your vehicle's body. No active user interaction is required for their function.

Image 3: A Husky Liners mud guard effectively blocking snow and slush from splashing onto the vehicle's side, demonstrating its protective function in winter conditions.
5. Maintenance
To ensure the longevity and appearance of your Husky Liners Mud Guards, follow these simple maintenance guidelines:
- Regular Cleaning: Wash the mud guards with soap and water as part of your regular vehicle cleaning routine. This prevents buildup of dirt and grime.
- Inspect Fasteners: Periodically check all screws and clips to ensure they remain tight and secure. Retighten if necessary.
- Avoid Harsh Chemicals: Do not use abrasive cleaners or harsh chemicals, as these may damage the thermoplastic material.

Image 4: A person cleaning a Husky Liners product with water, illustrating the ease of maintenance for thermoplastic accessories.
6. Troubleshooting
Common Issues and Solutions:
| Issue | Possible Cause | Solution |
|---|---|---|
| Mud guard does not fit correctly. | Incorrect model for vehicle; misalignment during installation. | Verify vehicle compatibility (2015-2020 Ford F-150 with OEM Fender Flares). Re-align and ensure all mounting points are correctly engaged. |
| Mud guard feels loose after installation. | Fasteners not fully tightened; clips not properly seated. | Check and tighten all screws. Ensure any clips are securely attached to both the mud guard and the fender well. |
| Mud guard rubs against paint. | Improper alignment; lack of protective film. | Re-adjust the mud guard for proper clearance. If not already installed, consider applying protective film (e.g., Husky Shield Film) to contact areas. |
7. Specifications
- Model Number: 58451
- Part Position: Front
- Vehicle Service Type: 2015-2020 Ford F-150 (King Ranch, Lariat, Limited, Platinum, SSV, XL, XLT) with Ford OEM Fender Flares
- Color: Black
- Material: Impact-resistant thermoplastic
- Installation Type: Screw-In (utilizes existing factory screws and clips)
- Item Weight: Approximately 2.1 pounds
- Product Dimensions: Approximately 19.2 x 12.8 x 3.2 inches
- UPC: 753933584511
8. Warranty and Support
Husky Liners products are proudly made in the USA and come with a Lifetime Guarantee. This warranty covers defects in material and workmanship for the life of the product. For warranty claims or technical support, please contact Husky Liners directly through their official website or customer service channels.
For more information, visit the official Husky Liners Store.
9. Safety Information
Proposition 65 Warning: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Always exercise caution when working on your vehicle. Ensure the vehicle is parked on a level surface and the parking brake is engaged. If lifting the vehicle, use appropriate jack stands for safety.