Selling parts I never installed on my C7 A6. I've officially sold the A6 and am hopping into an M340i. If you have an offer, send a PM.

(2) 17.5mm ECS wheel spacers - $80
Coolant pipe 06E-121-065-N - $60
Thermostat MTR-758185 - $40
PCV 06E-103-547-AH - $150
PCV Breather hose 06E-103-207-AM - $20

Prices don't include shipping, though if local near Southeast PA can arrange pickup. Parts never installed.