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(1) Large O-Ring
This includes:
Please select your AR size and housing options above
We recommend this High Performance version for most road applications
one manifold stud is not used
Audi S4 RS4 B5 2.7 30 Valve Bi-Turbo Complete Supertech Valvetrain Kit F30 328dx (1) Large O-RingSupertech Valvetrain Kit Kit Includes: 18 Intake Valves 12 Exhaust Valves Titanium Springs and Retainers Make: Audi Fits: Audi 2. 7 Bi Turbo (30 valves 6 cylinder) AGB AJK AZA ARE APB BEL ASJ AZR Supertech's valve springs are made of an extreme pure chrome silicon vanadium steel alloy to assure a very good durability for performance motors with high revolutions. They are developed with the use of computer simulations to prevent material fatigue under