●4" Upper Tube Exhaust Pipe Bellows for MerCruiser are designed to meet or exceed OEM specifications ●Fits: many 4.3L 5.0L 5.7L 7.4L 8.2L V6 and V8 MerCruiser engines ●Replaces MerCruiser 32-44348T 32-44348001, GLM 89120 Mallory 9072805, Sierra 18-2748 ●Connect Riser to Elbow on V6 and V8 Engine that use center rise manifolds with 4" exhaust from early 1980s to present ●Made of CR Rubber and Stainless Steel Clamps, High Hardness and Durable, Ideal hose for your selection