CTS Turbo Audi B9/4M/C8/D5 Billet Oil Cap

CTS Turbo's billet oil cap replaces the factory plastic unit on Audi B9 S4/S5/RS4/RS5, 4M Q7/SQ7/SQ8/RSQ8, C8 and D5 platform vehicles. Precision-machined from aircraft-grade billet aluminium, this cap delivers reliable sealing under high-temperature operation while resisting warping and cracking common with OEM plastic components. The knurled grip provides secure hand-tightening during service intervals, and the anodised finish adds a subtle performance touch to your engine bay. Simple direct-fit installation with no modifications required.