Porsche High-Flow Air Filter 928-110-197-07 ARP's head studs are proven

ARP's head studs are proven and tested for a lifetime of reliability and performance and are required for use with Nickies cylinders

Porsche Dansk catalytic converter bypass/test pipe for 911 models

1985-1991) models

and a 5x115 bolt pattern

Base Outside Width: 6 inches (152 mm)

Porsche High-Flow Air Filter 928-110-197-07 ARP's head studs are provenPorsche High Flow Air Filter. Elevate Your Engine's Performance Experience a surge of power and acceleration with the K&N Clamp On Air Filter. Engineered to optimize airflow and minimize restrictions, this filter delivers exceptional performance while safeguarding your engine from harmful contaminants. Key Features: Enhanced Horsepower and Acceleration: The state of the art air filter media is designed to increase horsepower and acceleration,