2019 Peterbilt 389 Wiper Blade Sizes

Quick reference

Best aftermarket replacements

• Bosch ICON: Premium beam blade, known for excellent all-weather performance. (~$$$)
• Rain-X Latitude: Another top-tier beam blade, offering good contact and durability. (~$$)
• Trico Force: A high-performance beam blade designed for a strong, consistent wipe. (~$$)
• Michelin Stealth: Hybrid blade design, combining the aerodynamics of a beam blade with the robust construction of a conventional blade. (~$)
• PIAA Si-Tech: Silicone blade, often providing a smoother, quieter wipe and longer lifespan in some conditions. (~$$$)

Attachment style

The 2019 Peterbilt 389 commonly uses a J-hook attachment for its wiper blades. This is one of the most widespread and easiest attachment styles to work with, identifiable by its distinctive "J" shape that hooks onto the wiper arm.

How to install

Replacing the wiper blades on your Peterbilt 389 is a straightforward process that can be done with basic tools or even bare hands. Here's a general guide:

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 it snap back against the glass.
2. Remove the old blade: Look for a small tab or button where the 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: Orient the new blade so that the J-hook on the wiper arm can slide into the connector on the blade. Push the blade firmly until you hear a click or feel it lock into place.
4. Lower the wiper arm: Carefully return the wiper arm to its resting position on the windshield.
5. Test the wipers: Turn on your wipers to ensure they are properly installed and operating smoothly.

Note: While the J-hook is common, always double-check your specific blade and arm for any unique attachment mechanisms. Some aftermarket blades may include adapters for various arm types.

When to replace

Wiper blades are crucial for safe driving visibility, and their performance degrades over time due to exposure to UV rays, extreme temperatures, and debris. It's generally recommended to replace your wiper blades every 6 to 12 months, or at the first signs of wear and tear. Key indicators that your wipers need replacing include:

• Streaking: Blades leave lines of water across the windshield.
• Chattering or skipping: Wipers do not move smoothly, making noise as they pass over the glass.
• Squeaking: Loud noises indicating a worn or improperly installed blade.
• Incomplete wipe: Areas of the windshield are consistently missed or left unwiped.
• Cracked or torn rubber: Visible damage to the blade element itself.

Don't wait for a heavy downpour to discover your wipers are ineffective. Regular inspection and timely replacement will ensure clear visibility in all weather conditions.

Need wipers swapped fast? Find a shop on Repairius.