Universal Rear Diffuser Audi A3 A4 A5 84cm

Useful tools

• Torx screwdriver
• Socket wrench
• Plastic trim removal kit
• Jack and jack stands
• Isopropyl alcohol

Fitting steps

1. Dry-fit the diffuser

   Place the diffuser under your vehicle's rear bumper and check the alignment with the exhaust outlets. Before fitting, check that the version received (Carbon, Gloss Black) is the one you ordered.

2. Remove the original part

   Remove the screws and clips under the bumper, then unclip the original skirt or diffuser.

3. Clean and degrease

   Wash the fitting area, then degrease it with isopropyl alcohol. Let it dry completely.

4. Stick, then screw

   Lay the diffuser on the double-sided tape, press for 30 seconds, then tighten the screws without forcing.

5. Check the result

   Check the alignment with the exhaust outlets and the clearance from the ground.

• Put the vehicle on jack stands or a lift: never work under a car held up only by the jack.
• Let the exhaust cool down before working near it.
• Fit above 59 °F (15 °C) and avoid washing for 24 h: the adhesive reaches full strength after that time.

• Delivery in 8 to 25 business days to France and Europe, 15 to 30 days to French overseas territories and the rest of the world. Shipping info.
• Tracked and insured shipping (loss, damage, theft): 9,95 €, free on orders over 99 €.
• 30 days after delivery to change your mind: item not fitted, in its original packaging.
• Tracking link sent by email as soon as your order ships. Shipping policy · Return policy