Wiper Blades, Door Seals and Weatherstripping

Blade length, arm connector and blade style

Wiper lengths are given in inches, and the driver's and passenger's blades are often different, so look up both in the manual. The arm end matters just as much: hook, pinch-tab, side-pin and bayonet connectors do not interchange unless an adapter is supplied. Beam blades press evenly along the glass, while conventional frames use several pressure points. Replace blades when they streak, skip or chatter, which for many drivers means roughly once a year.

Door seals: profile, material and position

Weatherstripping kits are cut for a position, such as a belt-line seal or a rear door, and for one vehicle, so a two-piece rear door kit will not fit the front. EPDM rubber stands up to sun and cold. Check whether the seal has a metal carrier, a push-on channel or an adhesive strip, and compare the profile with the old seal. Clean the surface with a solvent before pressing adhesive types in place.

Questions about Wiper Blades, Door Seals and Weatherstripping

How do I find the right wiper blade size?

Check the owner's manual or measure the old blade from end to end. Driver and passenger sides are often different lengths, and the rear window usually takes its own size.

Why do new wipers streak or chatter?

Most often the glass or the rubber is contaminated with wax, oil or road film. Clean the windshield and blade edge with glass cleaner or alcohol, and check the arm angle and pressure.

Can I glue a door seal with any adhesive?

Use an adhesive made for automotive weatherstripping. General-purpose glues harden and crack with movement and temperature changes, which lets the seal peel and leak. Apply it to clean, dry surfaces and hold the seal until it grips.