The 2021 Toyota 4Runner uses a 26-inch driver-side front wiper blade and a 17-inch passenger-side front blade, with an 11-inch rear blade on the tailgate if your model has a rear wiper.
In practice, front wiper sizes are chosen to match the sweep pattern of the windshield, while the rear blade clears the tailgate window. Knowing the exact lengths helps ensure optimal visibility and avoids streaks or incomplete coverage. If you’re shopping for replacements, sticking to these lengths will usually provide a proper fit for the 2021 4Runner.
Front wiper blade sizes
Front wiper blades come in two lengths on the 2021 4Runner—one for the driver’s side and one for the passenger’s side. The following lengths are the standard OEM-style measurements for this model year.
- Driver-side front blade: 26 inches
- Passenger-side front blade: 17 inches
These two front blade lengths ensure full windshield coverage across the sweeping arc. When shopping for replacements, verify that your chosen blades match these lengths to maintain proper fit and performance.
Rear wiper blade size (tailgate)
Some 2021 4Runners are equipped with a rear window wiper on the tailgate. If yours has one, it typically uses a compact blade designed for the smaller rear window.
- Rear blade: 11 inches
Rear wiper blades are smaller and often use a different connector than the front blades. If your rear wiper is missing or not functioning, measure the blade or consult the owner's manual to confirm the exact size and connector type before purchasing replacements.
How to confirm the correct blade sizes for your vehicle
If you’re unsure, there are a few quick checks to confirm the exact sizes for your particular 2021 4Runner:
- Check the owner’s manual or the door jamb sticker for wiper specifications.
- Measure the existing blades from end to end, noting the connector type.
- Shop by year, make, and model at a reputable retailer, which will usually list compatible blade sizes for the 2021 4Runner.
When in doubt, bring a sample blade to the store or consult retailer support to ensure compatibility with your trim and windshield configuration.
Summary
For the 2021 Toyota 4Runner, plan for 26-inch driver-side front wipers and 17-inch passenger-side front wipers, with an 11-inch rear wiper blade on models that include a rear window wiper. Always verify with your manual or retailer if you’re unsure, as exact sizes can vary by trim or regional specifications. Properly matched blades improve visibility and reduce streaking in adverse weather.