2025 Peterbilt 389 Wiper Blade Sizes

Quick reference

Best aftermarket replacements

When it's time to replace the wiper blades on your 2025 Peterbilt 389, you have several excellent aftermarket options that offer improved performance and durability over standard blades. Here are some of the top choices:

• Bosch ICON: (Premium Price Tier) Known for their beam blade technology and all-weather performance, Bosch ICON blades provide consistent pressure along the entire length of the blade, reducing streaks and improving visibility.
• Rain-X Latitude: (Mid-Premium Price Tier) These beam blades feature a contoured design that conforms to the curvature of your windshield, providing superior wiping in all weather conditions. They also boast a water-repelling coating.
• Trico Force: (Mid Price Tier) Designed for durability and performance, Trico Force blades offer a robust construction and an aerodynamic spoiler that helps maintain blade-to-windshield contact at higher speeds.
• Michelin Stealth: (Mid Price Tier) Combining the best of both traditional and beam blade designs, Michelin Stealth wipers offer excellent all-weather performance and a long-lasting, durable compound.
• PIAA Si-Tech: (Premium Price Tier) These silicone-infused blades are known for their quiet operation and their ability to leave a water-repellent coating on the windshield, enhancing visibility even in heavy rain.

Attachment style

The 2025 Peterbilt 389 typically utilizes a J-hook attachment style for its wiper blades. This is one of the most common and straightforward attachment methods, characterized by a J-shaped hook on the wiper arm that the blade assembly slides onto and locks into place. While J-hook is prevalent, it's always a good idea to double-check your specific vehicle's wiper arm for any variations, especially if you have custom wiper arms or accessories.

How to install

Replacing the wiper blades on your 2025 Peterbilt 389 is a relatively simple task that can be done with a few basic steps. Always refer to the instructions provided with your new wiper blades, as there can be slight variations between manufacturers.

1. Lift the wiper arm: Gently pull the wiper arm away from the windshield until it locks into an upright position. Be careful not to let the arm snap back against the glass, as this could cause damage.
2. Remove the old blade: Identify the small tab or clip where the wiper blade connects to the arm. Press or lift this tab and slide the old blade off the J-hook. It might require a little wiggling.
3. Attach the new blade: Slide the new wiper blade onto the J-hook, ensuring that it clicks securely into place. Give it a gentle tug to confirm it's properly seated.
4. Lower the wiper arm: Carefully lower the wiper arm back onto the windshield. Repeat the process for the other wiper blade.

If your Peterbilt 389 has an unusual or non-J-hook attachment style, consult your vehicle's owner's manual or the instructions provided with your replacement blades for specific guidance.

When to replace

Wiper blades are critical for safe driving visibility and should be replaced regularly. As a general guideline, it's recommended to replace them every 6 to 12 months, or at the first signs of wear. Here are some common indicators that your wiper blades need replacing:

• Streaking: If your wipers leave lines or streaks across the windshield, it means the rubber edge is no longer making proper contact with the glass.
• Chattering or skipping: A chattering or skipping motion suggests the blade is hardened, cracked, or not maintaining a consistent angle against the windshield.
• Squeaking: Persistent squeaking can be a sign of a worn blade or improper tension.
• Reduced visibility: If you notice a general decline in your ability to see clearly during rain or snow, it's a strong indication that your wiper blades are no longer performing effectively.
• Visible damage: Inspect the rubber element for cracks, tears, or missing pieces.

Don't wait until your visibility is severely compromised. Proactive replacement of wiper blades is a small investment that makes a big difference in driving safety.

Need wipers swapped fast? Find a shop on Repairius.