Parts-Wise
air cleaner
98711013300
Boxster (987) 2.7-3.4 (04-), Cayman 2.7-3.4 (05-) Air cleaner cartridge. Brand: Knecht
99657221902
Boxster (97-04), 996 (98-05) Cabin air filter without activated charcoal (carbon) filter (-M571).