Valve covers olds 403 9.26K viewsMarch 2, 2017 0 Erko-75 March 2, 2017 0 Comments Hi. Can I order valve covers for a olds 403 1977 with 5 holes? The cover I asking about is the 5595. I also need breathers for those. Is this something you can help me with? Best regard Erik Carlund 1 Answer ActiveVotedNewestOldest 0 OFFYEXPERT169 Posted April 3, 2017 0 Comments Hi Erik, we do not make a 5 hole version of the 5595. The casting is made for the 10 hole design only. Hope that helps. You are viewing 1 out of 1 answers, click here to view all answers. Register or Login Offenhauser Sales Corp, 5300 Alhambra Avenue, Los Angeles, CA 90032 Phone: (323) 225-1307