Complete Engines & Engine Parts › KVS12 | Mazda B6/BP1800 Race Springs Image 1 of 1 KVS12 | Mazda B6/BP1800 Race Springs $459.00 High performance PACALOY™ valve spring set to suit OEM retainers.Installed spring pressure is 66lb. Quantity: Add To Cart Added! High performance PACALOY™ valve spring set to suit OEM retainers.Installed spring pressure is 66lb.