WiperFinder

1978–1985 Mercedes-Benz 300CD Wiper Blade Sizes

Model years 1978 to 1985 Sizes confirmed by 2 sources

Your wiper sizes

Driver 20in 500 mm
Passenger 20in 500 mm
J-Hook (9×3 mm) connector

Every Mercedes-Benz 300CD from 1978 to 1985 takes these sizes. Any year in this range uses the same wiper blades.

Blades for your Mercedes-Benz 300CD

Shop the 20" + 20" pair on Amazon
Driver 20" only Passenger 20" only

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Best wiper blades for the 1978–1985 Mercedes-Benz 300CD

Three blade types, each in your sizes.

Budget

Conventional blades

  • Metal frame, the classic design
  • Lowest cost, fine on flatter glass

In your sizes: 20" + 20"

Check price on Amazon
Our pick

Beam blades

  • One piece with no frame to ice up
  • Hugs curved modern windshields

In your sizes: 20" + 20"

Check price on Amazon
Aero

Hybrid blades

  • A frame under an aero shell
  • Even pressure with a sleek profile

In your sizes: 20" + 20"

Check price on Amazon

Blades in your sizes

Each button opens that blade in your length.

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Compare these blades

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Model years covered

YearDriverPassengerArm
1985 20" 20" J-Hook (9×3 mm) This page
1984 20" 20" J-Hook (9×3 mm) This page
1983 20" 20" J-Hook (9×3 mm) This page
1982 20" 20" J-Hook (9×3 mm) This page
1981 20" 20" J-Hook (9×3 mm) This page
1980 20" 20" J-Hook (9×3 mm) This page
1979 20" 20" J-Hook (9×3 mm) This page
1978 20" 20" J-Hook (9×3 mm) This page

Good to know

Check against your old blades

Measure the rubber strip from end to end. It should match 20".

About this data

Fit data confirmed by 2 independent sources. Model years that share identical blades are grouped on one page.

How to fit your new blades

  1. Lift the arm

    Pull the wiper arm away from the glass until it stays up. Put a towel on the windshield in case the arm snaps back.

  2. Release the old blade

    Press the tab where the blade connects to the hook, then slide the blade down and off the arm.

  3. Clip on the new blade

    Slide the new blade's adapter up into the hook until it clicks. Most blades ship with a J-hook adapter already fitted.

  4. Lower the arm and test

    Gently rest the arm back against the glass. Spray your washer fluid once to check for clean wipes without streaks or chatter.

1978–1985 Mercedes-Benz 300CD wiper FAQ

Quick answers about this car.

What size wipers fit a 1978–1985 Mercedes-Benz 300CD?

The 1978–1985 Mercedes-Benz 300CD takes 20" driver-side and 20" passenger-side wiper blades. The arm uses a J-Hook (9×3 mm) connector.

Do all 1978–1985 Mercedes-Benz 300CD model years use the same wipers?

Yes. Every Mercedes-Benz 300CD from 1978 to 1985 shares the same blade lengths and arm type. If a blade fits one of these years, it fits them all.

What connector does the Mercedes-Benz 300CD wiper arm use?

J-Hook (9×3 mm). Most replacement blades include an adapter for it, so check the adapter chart in the package.

Can I use a wiper blade one size longer or shorter?

Stick with the listed sizes. A longer blade can hit the windshield frame or the other blade, while a shorter one leaves an unwiped gap. If your old blades don’t match our sizes, measure them end to end.

How often should I replace my wiper blades?

Most drivers change them every 6 to 12 months. Swap them sooner if they start to streak, chatter, or miss spots.

Different car?

Look up the wiper sizes for any car in our data.

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