Truck Hardware Gatorback Black Anodized Denali Dually Mud Flaps - Rear Pair - Fits 2020-2026 GMC Sierra 3500HD

Enhance your 2020-2026 GMC Sierra 3500 HD dually with the Truck Hardware Gatorback Black Anodized Denali Logo Dually Mud Flaps. This rear set of mud flaps provides superior protection for your truck's dual rear wheels while adding a sophisticated Denali touch. Each mud flap features the officially licensed Denali logo, die-stamped into a black anodized aluminum plate, delivering a bold and refined appearance that complements your truck's premium design.

Constructed from heavy-duty 1/2" thick virgin rubber, these mud flaps are built to withstand even the most challenging road conditions. They effectively shield your truck from rocks, mud, gravel, and other road debris, helping to keep your vehicle cleaner and minimizing paint damage. The Gatorback Black Anodized Denali Mud Flaps provide both functional protection and a stylish look, making them an excellent choice for GMC Sierra owners who value both performance and upscale aesthetics.

Rear Mud Flaps

These rear mud flaps are specifically designed for dually GMC Sierra 3500 HD models, providing outstanding coverage for your truck's dual rear wheels. Measuring an impressive 21" in width, they offer comprehensive protection from road debris, mud, and grime. The black anodized aluminum plate with the Denali logo measures 17 1/4" x 5", adding a distinctive and luxurious touch to your truck. The use of anodized aluminum ensures excellent rust and corrosion resistance, maintaining the polished appearance even in tough environments.

The high-quality virgin rubber construction ensures remarkable durability, allowing these mud flaps to withstand rough road conditions while maintaining peak performance. The wide design helps minimize "sail" at high speeds, ensuring the mud flaps stay securely in place for optimal protection. Installation is straightforward and requires no body drilling—each rear flap comes with custom-fit brackets and all necessary hardware for a secure and seamless fit.

Heavy-Duty Design for Lasting Performance

The Gatorback Black Anodized Denali Dually Mud Flaps are engineered for GMC Sierra owners who demand the best in both protection and style. The virgin rubber construction ensures resilience, while the black anodized aluminum plate with the Denali logo provides a refined, premium touch with superior corrosion resistance. These mud flaps are designed to endure challenging road conditions while maintaining their sleek appearance, making them an essential accessory for GMC Sierra owners who appreciate both quality and aesthetics.

Installation

Installing these mud flaps is simple and hassle-free. The rear set utilizes factory screws and existing mounting points, eliminating the need for drilling. The custom-fit design ensures compatibility with your truck's existing features, and each flap includes custom-fit brackets and all necessary hardware for a secure and straightforward installation.

You can easily fit them at home using standard tools. Once installed, these mud flaps integrate seamlessly with your truck’s design, providing both superior protection and a distinctive Denali look.

Key Features

• Denali Logo: Features black anodized aluminum plates with a die-stamped Denali logo, adding a refined and distinctive look while offering superior rust resistance.
• Enhanced Tire Coverage: Provides 21" of width for increased tire coverage and maximum protection against road debris, ideal for dual rear wheel configurations.
• Durable Virgin Rubber Construction: Constructed from 1/2" thick virgin rubber to withstand challenging road conditions, reducing wear and tear on your vehicle and ensuring long-lasting performance.
• Effortless, No-Drill Installation: Uses factory screws and includes custom-fit brackets for a secure and straightforward installation, delivering a premium, hassle-free experience.

Terms

• OEM (Original Equipment Manufacturer): Refers to parts made by the vehicle manufacturer. These mud flaps are designed to fit over the original mud protectors provided by GMC.
• Sail: When mud flaps move excessively due to wind or speed, potentially reducing their effectiveness. The weight and design of these flaps minimize sail.
• Anodized Aluminum: A type of aluminum that has undergone an anodizing process to improve corrosion resistance and provide a premium finish, ideal for automotive applications where exposure to the elements is common.
• Virgin Rubber: Rubber that has not been recycled or reclaimed, offering superior durability and flexibility compared to recycled rubber.

Tire Coverage:

• Rear Tire Coverage: 13.25" from the bottom of the fender to the bottom of the flap.

Warranty

The Gatorback Black Anodized Denali Mud Flaps are backed by a limited lifetime warranty. This warranty covers the rubber portion against tear-offs for the lifetime of the product for the original owner. The warranty provides peace of mind, offering a replacement if the rubber flaps come off due to normal wear and tear. However, it does not cover damage resulting from abuse or regular wear on brackets, plates, or mounting hardware.

Product Care & Maintenance

• Virgin Rubber: Clean the rubber portion using a mild soap and water solution. Avoid harsh chemicals or petroleum-based cleaners, as these can degrade the rubber over time. Rinse thoroughly and allow the mud flaps to air dry for the best results.
• Black Anodized Denali Plates: 

  Anodized aluminum is a durable, corrosion-resistant material featuring a specialized coating that enhances protection against rust while providing an attractive finish. To preserve its appearance and functionality, appropriate cleaning methods are essential. Incorrect cleaning practices may compromise the coating, resulting in fading or pitting. This guide provides detailed instructions on maintenance, including routine procedures, advanced cleaning techniques, precautions, and considerations regarding touch-free car washes.

  Routine Cleaning and Preventive Maintenance

  Regular cleaning is necessary to prevent the accumulation of contaminants that could impair the surface. Employ non-abrasive methods to safeguard the thin protective layer.

  • Frequency: Perform cleaning every 3 months, or more frequently in environments with high pollution, proximity to coastal areas (where salt may accelerate corrosion), or high usage.
  • Basic Method:
    • Begin by rinsing with plain water to remove loose debris. Utilize a soft sponge or cloth for gentle wiping.
    • For minor soiling, prepare a solution of mild, pH-neutral soap (such as dish detergent) with warm water. Apply using a soft cloth, employing circular motions without excessive force.
    • Rinse thoroughly with clean water to eliminate any residue.
    • Dry the surface promptly with a soft towel to avoid water spots.
  • Tools: Select non-abrasive items such as soft-bristle brushes or cloths. Avoid steel wool or abrasive pads, as they may scratch and damage the coating.
  • Preventive Measures:
    • Apply a suitable protective wax or sealant designed for anodized aluminum following cleaning (e.g., automotive-grade waxes for vehicle parts).
    • In urban or industrial settings, monitor for acidic precipitation or organic deposits, which may etch the surface if not addressed promptly.
    • Store items indoors when feasible to mitigate ultraviolet fading of colored finishes.

  Deep Cleaning for Persistent Contaminants

  For significant buildup, such as oxidation or embedded grime, employ more intensive yet cautious approaches. Always test methods on an inconspicuous area first.

  • Mild Abrasive Methods: Form a paste with baking soda and water for gentle application with a soft cloth, followed by thorough rinsing. For oxidized sections, use fine-grit sandpaper (600-1000) lightly with water and polish afterward, though this should be infrequent to prevent thinning the coating.
  • Commercial Products: Select cleaners formulated for anodized aluminum with a neutral pH. Citrus-based options are suitable; refrain from using unverified household cleaners.

  Practices to Avoid

  Anodized aluminum is susceptible to substances that may dissolve or abrade its protective oxide layer.

  • Harsh Chemicals: Refrain from using strong acids (e.g., hydrochloric or phosphoric) or alkalis (e.g., sodium hydroxide), as they may cause etching, discoloration, or removal of the finish.
  • Abrasive Tools: Avoid vigorous scrubbing implements or polishes that could dull the surface and expose the base metal.
  • High-Pressure Washing: While suitable for initial rinsing, limit pressure to under 1,000 PSI to prevent intrusion into seams.
  • Environmental Exposures: Minimize contact with chlorine, fluoride, or heavy metals, which may induce pitting.

  Impact of Touch-Free Car Washes on Anodized Aluminum

  Touch-free car washes offer convenience and minimize paint scratches by employing high-pressure jets and chemical applications without physical contact. However, they may adversely affect anodized aluminum elements, such as trim or wheels, owing to the intensity of the processes and chemicals.

  • Potential Damage: These systems frequently utilize high-pH alkaline detergents and acidic pre-treatments that can interact with the coating, leading to discoloration, dulling, etching, or fading. Alkaline agents are particularly detrimental, potentially dissolving the layer and resulting in a chalky or pitted appearance. Repeated use may exacerbate issues, especially on colored anodizing, causing inconsistent hues or loss of gloss.
  • Risk Factors: The absence of mechanical brushing necessitates more potent chemicals and elevated pressures (up to 1,500 PSI), which may infiltrate seals or aggravate minor imperfections. Although generally compatible with standard automotive paint, these washes can deplete protective sealants on anodized components more rapidly.
  • Recommendations: Avoid touch-free car washes for items featuring anodized aluminum whenever possible, particularly those with high-alkaline formulations. Prefer manual washing with pH-neutral solutions. If utilization is necessary (e.g., for seasonal salt removal), rinse affected areas thoroughly afterward and apply a protective coating. Verify the chemical composition of the wash or conduct a test on a small section if gentler options are claimed.

  Common Harsh Chemicals in Touch-Free Car Washes

  Touch-free systems depend on robust chemical blends for effective cleaning without contact. These typically include:

  • Alkaline Detergents: High-pH (9-14) compounds such as sodium hydroxide or potassium hydroxide, which emulsify oils and grime but may etch anodized aluminum by eroding the oxide layer.
  • Acidic Pre-Treatments: Low-pH (2-5) solutions incorporating hydrofluoric acid, phosphoric acid, or citric acid to dissolve mineral deposits and salts. These can induce pitting or discoloration if not adequately neutralized.
  • Surfactants and Solvents: Components like volatile organic compounds (VOCs), glycol ethers, or petroleum distillates that facilitate cleaning but may include irritants capable of degrading seals and finishes over time.
  • Additional Agents: Chelating compounds, foam enhancers, or corrosion inhibitors intended for protection, yet potentially abrasive in elevated concentrations. Multi-step processes alternating acidic and alkaline applications heighten risks for sensitive materials such as anodized aluminum.

  These formulations prioritize efficiency and compatibility with paint, rendering them less ideal for specialized coatings like anodized aluminum.

  Effective maintenance of anodized aluminum requires consistent application of gentle, neutral cleaning agents to prolong its durability and preserve its attributes. By eschewing aggressive chemicals and abrasive techniques, irreversible damage can be averted. Although touch-free car washes provide convenience, their dependence on potent alkaline and acidic substances presents notable risks to anodized surfaces, potentially causing discoloration or deterioration—manual methods are preferable where feasible. In the event of damage, seek professional assistance for restoration. Adhering to these recommendations will ensure the material retains its optimal condition for an extended period.

Manufacturer Warranty-

Gatorback mudflaps are backed by a Limited lifetime warranty. This warranty covers rubber replacement (ex- tear offs) for the lifetime of the product to the original owner. It does not cover damage caused by abuse, or regular wear and tear on brackets, plates, or mounting hardware.

For GMC Sierra owners seeking the perfect combination of premium protection and a bold, upscale look, the Truck Hardware Gatorback Black Anodized Denali Logo Dually Mud Flaps are an ideal choice. With enhanced coverage, effortless installation, and an exclusive Denali aesthetic, these rear mud flaps are designed to protect your truck from road debris while adding a refined, premium appearance. Choose Gatorback Black Anodized Denali Mud Flaps for lasting performance and a sophisticated style.