Sierra 18-2760 Marine Exhaust Tube for MerCruiser Sterndrive

The Sierra 18-2760 is a high-performance marine exhaust tube designed as a direct replacement for MerCruiser sterndrive applications. This non-corrugated exhaust tube is specifically engineered for larger V-8 engines that generate significant exhaust back pressure, providing a durable alternative to traditional exhaust bellows.

Key Features:

• Fits MerCruiser Alpha One Gen I, Gen II, R/MR, and Bravo I, II, III sterndrive units
• Non-corrugated design relieves excessive exhaust pressure and prevents premature bellows failure
• Constructed from soft, flexible rubber for easier installation compared to OEM parts
• Includes stainless steel hose clamp for secure mounting
• Built to meet or exceed original equipment specifications for optimal performance and reliability

Application: This exhaust tube is commonly used on higher horsepower engines where traditional exhaust bellows may experience premature failure due to excessive back pressure. The rigid tube design prevents the ballooning effect that can cause drive shaft bellows to rub against yoke and U-joints.

Cross References: Replaces MerCruiser 78458, 78458A1, OMC 775482, GLM 89150, and Mallory 9-72810. Sometimes referred to as a "cheater bellows" in marine applications.