2019 Peterbilt 579 Wiper Blade Sizes

Quick Reference

Note: The 2019 Peterbilt 579 most commonly uses 22" blades, but some configurations may use 24" blades. It's best to measure your existing blades before purchasing replacements.

Best Aftermarket Replacements

For a workhorse like the Peterbilt 579, visibility is key. Upgrading from standard OEM wipers to a premium aftermarket blade can make a significant difference in all weather conditions. Here are some of the best options available, from most to least expensive:

• Bosch ICON: Often considered the top-of-the-line, these beam-style blades offer excellent all-weather performance and a long lifespan. They provide uniform pressure across the entire blade for a clean, consistent wipe. ($$$)
• Rain-X Latitude: A very popular beam blade that incorporates a water-repelling coating, which helps shed rain, sleet, and snow. A great choice for drivers who frequently encounter wet weather. ($$$)
• Trico Force: A rugged, high-performance blade designed to withstand high winds and heavy rain, making it an excellent option for highway driving. ($$)
• Michelin Stealth: A hybrid blade that combines the stability of a conventional frame with the sleek design of a beam blade. It offers good performance across a wide range of conditions. ($$)
• PIAA Si-Tech: These silicone blades are known for their durability and for applying a silicone coating to your windshield, which causes water to bead up and roll away. They often last longer than traditional rubber blades. ($$)

Attachment Style

The 2019 Peterbilt 579 uses a J-hook attachment for its wiper arms. This is the most common type of attachment in the automotive and trucking industry. The end of the wiper arm is shaped like the letter "J," and the new wiper blade assembly simply hooks onto it and clips into place.

How to Install

Replacing the wiper blades is a straightforward process that requires no special tools.

1. Lift the Wiper Arm: Gently pull the wiper arm away from the windshield until it locks in a service position, standing upright.
2. Release the Old Blade: Look for a small tab on the underside of the connector where the blade attaches to the J-hook. Press this tab to release the locking mechanism.
3. Remove the Old Blade: With the tab pressed, slide the old wiper blade down and off the J-hook arm.
4. Install the New Blade: Slide the new wiper blade's connector onto the J-hook until you hear an audible "click." This indicates that it is securely locked in place.
5. Lower the Wiper Arm: Carefully lower the wiper arm back onto the windshield.

Note: Always ensure the new blade is securely fastened. A loose wiper blade can detach during operation, potentially damaging the wiper arm or windshield.

When to Replace

Wiper blades are a wear item and should be replaced every 6 to 12 months. For a commercial truck that sees many miles and varied conditions, it's best to inspect them more frequently. Signs that your wipers need replacing include:

• Streaking: Leaving lines of water on the windshield.
• Chattering: The blade skipping or vibrating as it moves across the glass.
• Squeaking: Noise during operation.
• Cracked or Torn Rubber: Visible damage to the blade's wiping edge.

Maintaining a clear view of the road is critical for safety. Don't wait until your wipers fail completely to replace them.

Need wipers swapped fast? Find a shop on Repairius.