Windshield wiper blades

What size wiper blades do I need?

10 sources

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Quick answer

Matching the inch length is only half the job. Most modern cars take two different lengths on the front windshield (a longer driver blade and a shorter passenger blade) plus a specific wiper arm connector. Two 22-inch blades on the same store rack can have completely different mounts in the box: one snaps onto a classic J-hook arm, while the other is built for a European push-button, pinch-tab, or side-pin arm. Check both the length and the arm style before you buy.

Wiper blade finders & catalogs: enter your year, make, and model to check length and arm mount together.

Bosch ICON Bosch Clear Advantage Rain-X Blade Size Finder TRICO Size & Install Finder

The two checks that prevent a return trip

Check both before you shop: the rubber blade length in inches for each side of the windshield, and the shape of the metal wiper arm end.

Check	What to look for	What the makers say
1. Blade length (inches)	Measure the rubber squeegee end-to-end on the driver side, passenger side, and rear window separately.	TRICO's size guide notes you can look up the year, make, and model in a part finder, check the owner's manual, or measure the existing blades with a tape measure. Driver and passenger sides are often different lengths (for example, 26 in driver and 18 in passenger).
2. Wiper arm connector	Pop the old blade off or look at the metal arm end: is it a U-shaped hook, a square button channel, a pinch tab, a side pin, or a flat bayonet tang?	Rain-X and TRICO installation guides group arms into J-hook (9×3 and 9×4 mm), push button (19 mm and 22 mm), pinch tab, side lock / side pin, and bayonet. Bosch's catalog splits hook-arm blades from OE specialty-adapter blades by part number.
3. Rear wiper (SUVs & hatchbacks)	Check the arm style as well as the 10 to 16 in length.	Bosch's rear wiper line notes that rear arms use specialty rear connections (snap-claw, rock-lock, side-lock, or integrated plastic arms) that front J-hook blades will not fit.

Guides in this section

GuideWiper arm connector typesJ-hook, push button (19 mm vs 22 mm), pinch tab, side pin, and bayonet arms compared.Read guide

GuideBosch ICON A vs B vs OEWhy Bosch puts A, B, or OE after the inch number (26A vs 26B vs 26OE), and which one fits your car.Read guide

Fix guideNew wipers streaking or chatteringPlastic shipping sleeve still on, road film on the glass, wrong A/B curve, or a twisted wiper arm.Read guide

Beam vs conventional frame vs hybrid blades

Conventional metal-frame blades: a stamped steel bridge with 4 to 8 claw pressure points holding the rubber refill (such as Bosch Micro Edge). They cost less, work well on flatter windshields, and can collect ice and snow in the metal joints in winter.
Beam blades: a single pre-curved spring-steel beam with no external metal brackets and a built-in wind spoiler (such as Bosch ICON, Bosch Clear Advantage, or Rain-X Latitude). Bosch's Beam Trade-Up guide notes that beam blades spread pressure evenly along curved modern glass and leave nowhere for snow and ice to pack into metal hinges.
Hybrid blades: a low-profile aerodynamic shell over an articulated frame, common as factory equipment on many Asian makes.

When to replace wiper blades

Rain-X and TRICO both recommend inspecting blades every 6 months and replacing them about once a year, or sooner when visibility drops. TRICO lists four clear signs that the rubber has aged out: streaking (dry or cracked squeegee edge), splitting (rubber separating from the frame), chattering or skipping (curved or hardened rubber that no longer flips smoothly), and worn frame or detached edge. If a brand-new set streaks or skips on day one, don't throw it out yet — see why new wiper blades streak or chatter.

Protect the windshield while changing blades: a bare metal wiper arm is spring-loaded. If it snaps down without a blade attached, the metal end can crack the windshield in an instant. Lay a folded towel on the glass under the arm or rest the arm gently on the towel while you swap the connector.

How we work: every connector dimension, part suffix, and troubleshooting step in this section comes from Bosch, Rain-X, and TRICO catalogs and installation guides. Each page lists its sources below.

Questions people ask

Are driver and passenger wiper blades the same size?

Often no. Many cars use a longer blade on the driver side (for example 24 or 26 inches) and a shorter blade on the passenger side (16 to 20 inches) so the passenger blade clears the curved corner of the windshield without hitting the pillar. Measure both sides or check a part finder by year, make, and model.

Will any wiper blade of the right inch length fit my car?

Only if the adapter in the box matches your wiper arm. A 22-inch blade made for a classic J-hook arm will not clip onto a 19 mm or 22 mm push-button, pinch-tab, or side-pin arm without the matching adapter. Check your wiper arm connector type before buying.

How often should windshield wiper blades be replaced?

Rain-X and TRICO both recommend checking wiper blades every 6 months and replacing them about once a year, or sooner if the rubber streaks, splits, chatters, or pulls away from the frame.

Sources

Last checked Oct 23, 2026. Wiper part numbers and arm adapters change by trim and build year; confirm with the maker's part finder or your owner's manual before buying.