Valve covers olds 403 8.62K 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. Register or Login Offenhauser Sales Corp, 5300 Alhambra Avenue, Los Angeles, CA 90032 Phone: (323) 225-1307