Gloss Black Rear Diffuser for 2017-2019 Audi A4 S-line / S4 B9

Product Overview

This rear diffuser is designed specifically for the 2017-2019 Audi A4 S-line and S4 (B9 platform), giving your vehicle a sporty RS-style rear appearance. Features a gloss black finish and integrated tail light openings.

Vehicle Compatibility

✅ Fits: 2017 ▪ 2018 ▪ 2019 Audi A4 S-line / Audi S4 B9

❌ Does NOT Fit: Base A4 (non S-line), A4 Allroad, RS4, or other models

Key Features

▫️ Gloss black finish

▫️ Integrated tail light provisions

▫️ Direct replacement for factory rear valence

▫️ Sporty RS-inspired design

Shipping & Delivery

📦 Ships via FEDEX – Estimated delivery: 4-7 business days

🔍 Tracking information provided once shipped

What's Included

🔹 1 x Rear diffuser (gloss black)

Important Notes

▫️ Professional installation recommended

▫️ Verify your vehicle is S-line A4 or S4 before ordering

▫️ Tail lights NOT included – reuse factory lights

▫️ This is an aftermarket product not affiliated with the vehicle manufacturer

Need Help?

📩 Message us with your vehicle VIN for fitment confirmation before ordering!