Boat bellows are essential flexible rubber components used in the stern drive system to protect critical parts from water intrusion and wear. They enclose and seal the exhaust, shift cable, and u-joints, preventing leaks and ensuring smooth operation of the outdrive.
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1-2 weeks delivery time This Cylinder Head Gasket ensures a tight seal for Johnson and Evinrude outboard engines, enhancing performance and reliability. It has an original part reference of 325273 and is compatible with models 5, 6, and 8 from 1986 to 2000. Manufactured by Evinrude and Johnson, it is branded by Sierra with the product number 18-3800.
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$ 35.35
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1-2 weeks delivery time This Cylinder Head Gasket provides a secure seal for various Johnson and Evinrude outboard models, enhancing engine efficiency. It features original part references 320658, 327795, and 335359, and is compatible with models like 40 and 60. Manufactured by Evinrude and Johnson, it is branded by Sierra with the product number 18-3802.
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$ 64.47
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1-2 weeks delivery time This Cylinder Head Gasket ensures a proper seal for smaller Johnson and Evinrude outboard engines, promoting durability and performance. It includes original part references 324324, 329419, and 765012, and is compatible with models 20, 25, 30, and 35. Branded by Sierra, the product number is 18-3803.
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$ 48.90
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1-2 weeks delivery time Specifically designed for certain Suzuki outboard models, this Cylinder Head Gasket ensures a perfect fit and durability. It includes original part references like 11141-93900 and is compatible with models DT9.9 and DT15. Manufactured by Suzuki and branded by Sierra, it has the product number 18-3808.
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$ 47.91
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1-2 weeks delivery time This gasket is designed to fit original reference numbers 11141-87E10, 11141-87E11, 11141-87E20, and 11141-87E90, specifically for models DT90 and DT100. It is branded by Sierra with the product number 18-3822.
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$ 108.97
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1-2 weeks delivery time This gasket is designed for compatibility with various Yamaha and Mercury engines, enhancing engine reliability. It includes original reference numbers like 27-825482 and is suitable for models 8 and 9.9 (4-stroke). Branded by Sierra, it has the product number 18-3827.
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$ 81.28
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1-2 weeks delivery time Designed for Yamaha and Mercury engines, these gaskets ensure a perfect fit and optimal engine performance. They include original reference numbers such as 682-11181-01-00 and are compatible with models 9.9 to 15 from 1984 to 1995. Manufactured by Mariner and Yamaha, they carry the product number 18-3828.
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$ 38.37
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1-2 weeks delivery time This high-quality cylinder head gasket is designed specifically for Johnson outboard engines, ensuring optimal performance and reliability. It has an original reference of 329836 and is compatible with models 50, 60, 65, and 70 from 1990 to 2000. Manufactured by Evinrude and branded by Sierra, it carries the product number 18-3836.
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$ 65.92
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1-2 weeks delivery time This cylinder head gasket is specifically designed for Johnson engines manufactured by Evinrude, ensuring a perfect fit and optimal performance. It has an original reference of 203130 and is suitable for models 4 and 4.5 from 1969 to 1980. The gasket is branded by Sierra, with the product number 18-3841-2.
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$ 14.02
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1-2 weeks delivery time Engineered for Mercury and Mariner engines, this cylinder head gasket provides reliability and durability for your outboard motor. It features an original reference of 27-825032 and is compatible with models 40, 45, and 50 from 1995 to 2001. Manufactured by Mariner and Mercury, it carries the product number 18-3845 and is branded by Sierra.
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$ 180.17
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1-2 weeks delivery time This cylinder head gasket is specifically made for Johnson and Evinrude outboard motors, featuring a precise design for enhanced performance. It has original references 333549 and 340115 and is suitable for models 120, 125, and 140 from 1988 to 1992. Manufactured by Evinrude and Johnson, it is branded by Sierra with the product number 18-3866.
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$ 51.09
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1-2 weeks delivery time Engineered for various GM engines, this head gasket provides a reliable seal under demanding conditions. It includes original references such as 27-34278 and is compatible with models like 5.0L and 5.7L, manufactured by Mercruiser, OMC, and Volvo Penta. The product number is 18-3876, and it is branded by Sierra.
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$ 80.50
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1-2 weeks delivery time The Cylinder Head Gasket is an essential component for maintaining the integrity and performance of your Ford engine. This product ensures a reliable seal, preventing leaks and optimizing engine efficiency. It has original reference numbers such as 27-13709 and is compatible with models including 3.7L/LX, 165, and 170. Manufactured by Mercruiser and OMC, it is branded by Sierra with the product number 18-3878.
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$ 90.22
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1-2 weeks delivery time This high-quality Cylinder Head Gasket is designed for GM 4.3L engines, providing a perfect fit and superior sealing capabilities to enhance engine performance and longevity. It features original reference numbers like 27-11986 and is compatible with various models, including 170 and 185. Manufactured by Mercruiser, OMC, and Volvo Penta, it carries the product number 18-3879 and is branded by Sierra.
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$ 98.49
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1-2 weeks delivery time The 5 Johnson Base Drain Seals are compatible with a range of models from Johnson-Evinrude, including those from 6 to 225 horsepower. They also fit Volvo Penta models DP, SX, and TSK. These seals are manufactured by Sierra and carry the product number 18-4248-9.
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$ 13.41
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1-2 weeks delivery time Designed for specific GM engine blocks, this elbow gasket and exhaust manifold set ensures reliable performance and fit, compatible with models 4.3L/X/MPI, 175, 185, and 205, branded by Sierra with product number 18-4347-1.
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$ 53.13
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1-2 weeks delivery time Designed for GM engine blocks, this exhaust manifold gasket kit ensures a reliable seal and optimal performance, with original reference 27-99777A1, and is branded by Sierra with product number 18-4367.
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$ 63.45
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1-2 weeks delivery time This timing chain gasket set is compatible with various Mercruiser engine models, including 2.5L, 3.0L, and others, engineered for reliable sealing and performance, branded by Sierra with product number 18-4375.
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$ 35.37
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1-2 weeks delivery time This engine block gasket kit is suitable for GM 3.0L engines, excluding the 3.0LX model, providing essential sealing solutions to maintain engine integrity and performance, branded by Sierra with product number 18-4384.
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$ 302.60
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1-2 weeks delivery time The exhaust manifold gasket kit for Mercruiser engines ensures a perfect seal, enhancing performance and reliability, with original reference 27-46401A1 and designed for models 4.1L, 165, 250, branded by Sierra with product number 18-4396.
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$ 105.13
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What are the different types of boat bellows and their specific uses?
Boat bellows come in three main types: exhaust bellows, shift cable bellows, and u-joint bellows, each serving a specific function in a stern drive system. Exhaust bellows direct engine exhaust away from the boat through the drive, while shift cable bellows protect the shift cable from water intrusion and prevent leaks. U-joint bellows shield the universal joints and gimbal bearing from moisture and debris, helping to prevent rust and ensuring smooth operation of the outdrive.
Why is it important to regularly inspect and maintain boat bellows?
Regular inspection and maintenance of boat bellows are essential to prevent water intrusion and protect key components like the gimble bearing and shift cable. Cracks or dry bellows can lead to leaks, causing damage to the bell housing and requiring costly repairs. Using the right tools, such as an expander tool and socket, allows mechanics to carefully remove and replace worn bellows, ensuring the stern drive operates smoothly and the transom remains sealed against sea exposure.
In what marine environments do boat bellows experience the most wear and tear?
Boat bellows experience the most wear and tear in saltwater environments due to constant exposure to corrosion, UV rays, and marine growth. Frequent check and maintenance are necessary in high-motion conditions, such as rough waters or areas with heavy boat traffic, where the mount and clamp connections endure significant strain. Proper access to the bellows for inspections and timely pull and replacement of worn-out units can prevent leaks and potential drivetrain damage.