DescriptionRevTech, Head/Base Gasket Kit, 125 CI, 0.040 MLS, 4.250 Bore, 684670/684671Sold as a Pair for 2 Cylinders.Head is Multi-layer steel, while Base is Single-layer steel– 125 CI– 0.040 MLS– 4.250 BoreCCI OEM:684670 QTY 2684671 QTY 2 WILL SHIP SAME DAY MONDAY TO FRIDAY BY 10.30 AMNEW IN PACKAGE We package with care US AND INTERNATIONAL ORDERS WILL TAKE A FEW MORE DAYS THAN DOMESTIC ORDERS