not sure of the OE dia/length but I'd measure the length needed to reach near the end of the rear side of the WP "cross". you have the fan the pulley the spacers (if used) & the cross & probably washers, Mancini or 440 source etc might have kits of those 4 bolts (would hurt to double check the length needed for your app). EDIT grade 5 is plenty

Last edited by RapidRobert; 06/12/15 10:59 AM.

live every 24 hour block of time like it's your last day on earth