STX-12F/STX-15F Kit Includes: Starter O'Ring - Qty 2 Intake Manifold Gasket - Qty 1 Exhaust Manifold Gasket - Qty 1 Exhaust Pipe Gasket - Qty 1 Output Cover O'Ring - Qty 1 Output Cover Gasket - Qty 1 Exhaust Gasket Ring - Qty 1 Oil Dip Stick O'Ring - Qty 1 Front Cover O'Ring - Qty 1 O-Ring Injection Nozzle - Qty 4 Exhaust Gasket Ring Set - Qty 1 Head Gasket - Qty 1 Cyclinder Base Gasket - Qty 1 Crankshaft Oil Seal - Qty 1 Crankshaft Oil Seal - Qty 1 Crankshaft Oil Seal - Qty 1 Spark Plug Hole Gasket - Qty 4 Head Cover Gasket - Qty 1 Head Cover Bolt Seal - Qty 7 Case & Oil Pump Dowel Pin O'Ring - Qty 2 Plate Gasket - Qty 1 Generator O'Ring - Qty 1 Chain Guide Screw O'Ring - Qty 1 Oil Pan Gasket - Qty 1 Oil Pump Head O'Ring - Qty 2 Chain Tensioner O'Ring - Qty 1 Oil Pump Impeller O'Ring - Qty 1 Oil Fill Cap O'Ring - Qty 1 Spark Plug O'Ring Buna - Qty 1 Jet Pump O'Ring - Qty 2 Jet Pump O'Ring - Qty 1 Jet Pump Filter Assembly O'Ring - Qty 1