2020 Isuzu NQR Wiper Blade Sizes & Replacement Guide

Keeping the windshield of your medium-duty truck clear is essential for safety, especially when you are out on a delivery route or navigating busy job sites. If you are driving a 2020 Isuzu NQR, getting the right wiper blades is a quick but crucial maintenance task. Below is a comprehensive guide to finding, buying, and installing the correct wiper blades for your Isuzu cab-over truck.

Quick reference

(Note: Because OEM part numbers for commercial trucks can vary based on exact cab configurations and upfitter modifications, it is always best to consult your local Isuzu commercial dealer for exact factory part numbers. However, standard aftermarket blades will fit perfectly.)

Best aftermarket replacements

When outfitting a commercial truck like the 2020 Isuzu NQR, you want durability. Commercial driving means more hours on the road, subjecting your wipers to more dirt, bugs, and varied weather. Here are the top aftermarket replacements spanning different price tiers:

• Bosch ICON: (Premium tier) A beam-style blade that offers exceptional durability and even pressure across the windshield. Ideal for heavy rain and snow.
• PIAA Si-Tech: (Premium tier) Features silicone rubber that coats the windshield with a water-repellent barrier as it wipes. Excellent for longevity.
• Rain-X Latitude: (Mid-to-High tier) A popular beam blade that applies a water-repellent coating. Great performance in all weather conditions.
• Michelin Stealth: (Mid tier) A hybrid blade combining the durability of a traditional frame with the aerodynamic cover of a beam blade.
• Trico Force: (Mid tier) Designed specifically with a swept-wing spoiler to keep the blade attached to the glass during high wind speeds—perfect for the upright windshield of an NQR.

Attachment style

The 2020 Isuzu NQR uses a standard commercial J-hook attachment. These are identical in function to standard passenger car J-hooks, though they may be the slightly wider 9x4mm size compared to the standard 9x3mm. Most premium aftermarket blades come with an adapter that accommodates both sizes, making aftermarket replacement straightforward.

How to install

Replacing J-hook wiper blades is one of the easiest maintenance tasks you can perform on your NQR:

1. Lift the arm: Carefully lift the wiper arm away from the windshield. Caution: Commercial wiper springs are strong. Do not let the bare metal arm snap back onto the glass, or it will crack.
2. Release the old blade: Look for a small plastic tab where the blade meets the hook. Press or pull this tab, and slide the wiper blade down toward the base of the wiper arm to free it from the hook.
3. Remove: Push the blade completely out of the hook.
4. Install the new blade: Slide the new blade’s adapter into the J-hook. Pull it firmly upward until you hear a distinct "click" confirming it is locked in place.
5. Test: Gently lower the arm back to the glass. Turn on your ignition and run the wipers with washer fluid to ensure they operate smoothly.

When to replace

For a commercial vehicle like the NQR, visibility is paramount. You should replace your wiper blades every 6 to 12 months. However, you should replace them immediately if you notice:

• Streaking: Leaving bands of water across your line of sight.
• Chattering: The blade skips or stutters across the glass instead of smoothly wiping.
• Tearing: Visible cracks, splits, or missing chunks in the rubber squeegee.

Need wipers swapped fast? Find a shop on Repairius.