Shift Cable Bellows 74639A2 For All MerCruiser Stern Drives Using a Drive Unit Shift Cable Description The Bellows are designed to meet or exceed OEM specifications. The Bellow will be exactly as pictured. For: All #1, #2 units, Alpha, Bravo I, II, III Replaces Part #s: * MerCruiser Stern Drive 74639A2 31659 74639 * Sierra 18-2753-2 * GLM 89080 Package contains: * 1 X Shift Cable Bellow * 1 X SS316 Clamp * 1 X C clamp Material: Made of High Quality Neoprene Rubber and Stainless Steel Clamps Easy to install with common tools. Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive.