Billet Aluminum Valve Covers for 911, 964, & 993 $305.00 Select Application   911 Lower Valve Cover Set 911 Upper Valve Cover Set 964 Lower Valve Cover Set 964 Upper Valve Cover Set 993 Lower Valve Cover Set (+$25.00)993 Upper Valve Cover Set (+$25.00) FEATURES:   Stop leaking valve cover problems with these precision CNC machined billet aluminum covers.   The 911 covers incorporate the new improved and reusable 964 seals that solve the sealing problems.   A direct bolt on replacement for the problematic factory valve covers.   This is the newest innovation in valve covers and comes complete with one pair of covers and factory rubber gaskets.   Available for top or bottom, including twin plug 911 engines.