How to Fit a Mercedes CLA Class Roof Spoiler: Step-by-Step Installation Guide

How to Fit a Mercedes CLA Class Roof Spoiler: Step-by-Step Installation Guide

This spoiler fits every version of the CLA, from the CLA200 right up to the CLA45 S, so whichever trim you're driving the fitting process is the same. This guide covers fitting our Mercedes CLA Class Roof Spoiler, fitting the Mercedes CLA Class, 2019 to 2022.

Tools you'll need

  • Isopropyl alcohol (IPA) or a dedicated panel prep wipe
  • Microfibre cloths (lint free)
  • Masking tape and a tape measure
  • Strong automotive adhesive such as Tiger Seal or Gorilla Glue (the supplied 3M tape is for positioning only, not a permanent fix)
  • Access to the roof area, a step stool or ramp if needed

Step 1: Check your fitment

Confirm you have the CLA Class, 2019 to 2022, before ordering, this spoiler fits all versions including the CLA45 and CLA45 S.

Step 2: Clean and prep the surface

Wash the mounting area thoroughly and dry it completely. Wipe with isopropyl alcohol to remove all wax, polish and road grime for the strongest possible bond.

Step 3: Mock the position with the supplied tape

Use the supplied 3M tape to hold the spoiler in place temporarily so you can check the line. Measure from the same reference points on both sides so it sits perfectly central.

Step 4: Dry fit before you commit

Step back and check the spoiler sits level from a few angles before going any further, this is the step that catches alignment issues before anything becomes permanent.

Step 5: Bond and secure

Remove the spoiler, apply a bead of strong automotive adhesive to the mounting points, then press it back into your marked position. Apply firm, even pressure along the full width and allow the adhesive to cure fully before driving at speed.

Common mistakes to avoid

  • Treating the supplied 3M tape as the final fix rather than a positioning aid
  • Skipping the IPA wipe down, residue is the top cause of a spoiler lifting
  • Fitting in cold weather without warming the adhesive or panel first
  • Not measuring from matching reference points on both sides, leading to a spoiler that looks slightly off centre
  • Washing the car or using a jet wash within the first 24 to 48 hours while the adhesive cures

FAQs

Does this fit the CLA45 AMG?

Yes, this spoiler fits all CLA Class versions, including the CLA45 and CLA45 S.

Is the supplied tape enough to hold the spoiler permanently?

No, it's there to help you mock the position while fitting. For a permanent fix we recommend a strong automotive adhesive such as Tiger Seal or Gorilla Glue.

Can I fit this myself, or should I get it professionally fitted?

Most owners fit this themselves in under an hour. If you're not confident working with automotive adhesives, we'd always recommend a professional bodyshop or detailer for the best finish.

Browse the full range of car spoilers or shop Mercedes CLA Class parts to find the right fitment for your car.

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