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The Ferrea Competition Plus exhaust valve for Porsche 996 Turbo (996TT) 3.6L applications is supplied as a set of 12 with a 33mm head, 5.95mm stem, 21-degree seat and a +1mm sizing option plus radial groove. This matched 12-piece set supports full exhaust-valve replacement on 996TT heads when slightly larger valve sizing is needed for restored flow or rebuild consistency.
Ferrea Porsche 996TT 3.6L 33mm 5.95mm 21 Deg Flo +1mm Sgl Radial Grv Comp Plus Exh Valve - Set of 12
