Upper Exhaust Bellows for MerCruiser 3-4" # 70981A3, 18-2762, 89070

Upper Exhaust Bellows 3-4" for MerCruiser

This upper exhaust bellows for MerCruiser 3-4" replaces OEM part numbers 70981A3, 18-2762, and 89070, providing a direct-fit seal between the exhaust manifolds and Y-pipe.

Overview

The upper exhaust bellows for MerCruiser 3-4" is a critical component that seals the exhaust connection, preventing leaks and ensuring efficient engine operation. Designed for Mercury MerCruiser stern drive engines, this upper exhaust bellows maintains proper exhaust flow and protects against water intrusion. Reliable performance depends on a quality upper exhaust bellows replacement.

Built For Performance

• Constructed from durable EPDM rubber for long-lasting flexibility and resistance to heat and ozone
• Reinforced convoluted design to withstand exhaust pressure and vibration
• Direct replacement for OEM part numbers 70981A3, 18-2762, 89070
• Includes stainless steel clamps for secure installation
• Resists cracking and deterioration from exhaust gases
• Engineered for MerCruiser 3-4" exhaust systems

On-The-Job Use

• Ideal for replacing failed upper exhaust bellows on MerCruiser 3-4" exhaust systems
• Commonly used on MerCruiser Alpha and Bravo stern drive engines
• Suitable for both saltwater and freshwater boating applications
• Essential for annual maintenance to prevent exhaust leaks

Specs At A Glance

Good To Know

Q: How often should the upper exhaust bellows be replaced? A: It is recommended to inspect and replace the bellows every 2-3 years or during major engine service to prevent exhaust leaks.

Q: Is this compatible with both Alpha and Bravo drives? A: Yes, this upper exhaust bellows fits MerCruiser Alpha and Bravo drive systems with 3-4 inch exhaust outlets.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.