CTS Turbo Audi B9 Billet Washer Fluid Cap

The CTS Turbo Billet Washer Fluid Cap replaces the standard plastic reservoir cap on B9 platform Audis with a precision-machined aluminium alternative. Designed as a direct OEM replacement, this cap suits A4, S4, A5, S5, RS5 and Q7 4M models from 2017 onwards. CNC-machined from billet aluminium with an anodised finish, it offers superior durability compared to factory plastic components while adding a subtle yet refined touch under the bonnet. Simple installation requires no modifications, making it an ideal upgrade for workshops looking to enhance engine bay presentation with genuine performance-grade hardware.