Balancer GearS.66485https://75025d40dd58ab042ef4-3509ef0b9210fbf84c18b36ced24de7a.ssl.cf3.rackcdn.com/imagelibrary_sml/66485_pic1.jpgSparexGear - Balancer 39 ToothShort Engine: BSD444S.162190https://75025d40dd58ab042ef4-3509ef0b9210fbf84c18b36ced24de7a.ssl.cf3.rackcdn.com/imagelibrary_sml/162190_pic1.jpgSparexCylinder: 4 Cyl. Seal: Lip Seal (Note: Crank balancer gear has 78 teeth, and the gear set gears should have 39 teeth each. 3.3L Engine. This requires 9/16'' x 12 UNC Cylinder Head Bolts, the Earlier Engines were 1/2'' Cylinder Head Bolts so please check your bolt size before installation.)Short Engine: BSD444TS.162191https://75025d40dd58ab042ef4-3509ef0b9210fbf84c18b36ced24de7a.ssl.cf3.rackcdn.com/imagelibrary_sml/162191_pic1.jpgSparexCylinder: 4 Cyl. Turbo Seal: Lip Seal (Note: Crank balancer gear has 78 teeth, and the gear set gears should have 39 teeth each. 3.3L Engine. This requires 9/16'' x 12 UNC Cylinder Head Bolts, the Earlier Engines were 1/2'' Cylinder Head Bolts so please check your bolt size before installation.)S.66485, S.162190, S.162191