Porsche Spark Plug 99917022890 Rotor and TT models from late

and TT models from late 1990s to mid-2000s

Beetle and Audi TT models from 1998-2006

and fittings included

professional installation recommended for exact fitment

This product also goes by these part numbers: 94637505823

Porsche Spark Plug 99917022890 Rotor and TT models from lateThe spark plug is a critical component to the proper running engine. In a conventional gasoline engine, the air fuel mixture is ignited by the spark plug to drive the piston down and convert this energy to horsepower. If your spark plugs arent in good shape, this crucial process can be severely hindered to the point of power loss, hesitation, misfires, and poor start up performance. Typical service schedule for standard copper tip spark plugs is