2025 Peterbilt 579 Wiper Blade Sizes

Maintaining clear visibility in a Class 8 heavy-duty truck like the 2025 Peterbilt 579 is not just a matter of convenience—it is absolutely critical for safety. Whether you are hauling freight through a torrential downpour, facing heavy winter snow, or dealing with road spray on the interstate, having the correct wiper blades ensures your windshield stays clear.

Use this guide to find the correct wiper blade sizes, attachment types, and top aftermarket options for your 2025 Peterbilt 579.

Quick reference

Here is the essential sizing and attachment information for your 2025 Peterbilt 579 wiper blades. (Note: As a heavy-duty tractor, this model is not equipped with a rear wiper).

Note: Heavy-duty truck OEM part numbers frequently update. We recommend verifying the exact OEM part number with your local Peterbilt parts counter, though standard aftermarket sizes are universally compatible.

Best aftermarket replacements

If you are looking to upgrade your factory wipers or need a reliable replacement on the road, several premium aftermarket brands manufacture heavy-duty and automotive cross-compatible blades that fit the Peterbilt 579.

• Bosch ICON: (Premium price tier) A top-tier beam blade design that resists ice and snow buildup, making it ideal for long-haul drivers traversing winter climates.
• Rain-X Latitude: (Premium price tier) Features a water-repelling coating that transfers to the windshield during use, significantly improving visibility in heavy rain.
• Trico Force: (Mid-to-premium price tier) An aerodynamically designed blade engineered to withstand the high wind speeds and crosswinds commonly experienced by semi-trucks on the highway.
• Michelin Stealth: (Mid-range price tier) A durable hybrid blade that combines the anti-snow benefits of a beam blade with the structural support of a traditional frame.
• PIAA Si-Tech: (Premium price tier) Silicone-based blades that last incredibly long and withstand extreme temperatures and UV exposure far better than standard rubber.

Attachment style

The 2025 Peterbilt 579 utilizes a standard J-hook attachment for its wiper arms. This is the most common wiper arm style in the automotive and light-to-medium truck industry, meaning you can easily find replacement blades at virtually any truck stop, auto parts store, or travel center. The J-hook design is robust and allows for quick, tool-free swaps.

How to install

Replacing the wiper blades on your Peterbilt 579 takes just a few minutes. Here are the basic steps for standard J-hook attachments:

1. Lift the wiper arm: Pull the heavy-duty wiper arm away from the windshield until it locks in the upright position.
2. Remove the old blade: Locate the small plastic tab where the blade meets the hook of the arm. Press the tab and push the blade down toward the base of the wiper arm to slide it out of the hook.
3. Position the new blade: Align the new wiper blade’s mounting adapter with the J-hook.
4. Lock it in: Pull the blade upward firmly into the hook until you hear or feel a distinct "click," ensuring it is securely seated.
5. Test: Carefully lower the arm back against the glass. Run the wipers with washer fluid to ensure they operate smoothly.

When to replace

For over-the-road trucks, wiper blades endure significantly more wear and tear than typical passenger vehicles. You should replace your wiper blades every 6 to 12 months. However, you should swap them out sooner if you notice:

• Streaking or unwiped sections on the glass.
• Chattering or skipping across the windshield.
• Squeaking noises during operation.
• Visible tearing, splitting, or dry-rotting on the rubber squeegee.

Need wipers swapped fast? Find a shop on Repairius.