Plastic to Metal (Late Style) Timing Chain Tensioners Update Kit Kit Contains: Left and Right Upper Metal Type Chain Tensioners,2) Lower (Secondary)Chain Tensioners, 2) Lower(Secondary) Chains,2) Upper (Primary) Chains,2) Upper (Primary) Chain Guides, 2) Lower (Secondary)Chain Guides. Requires Use of 4)JFB 10607B Tensioner Bolts for Proper Installation of Metal From Plastic Timing Chain Tensioners, Not supplied with Kit.