An outboard engine cover is a protective accessory designed to shield your boat's engine from harsh marine conditions. Made from durable and breathable materials like acrylic, these covers prevent damage from UV rays, moisture, and debris, ensuring year-round protection. With options for popular brands these covers fit various engine sizes, from V6 to V12, and are available for both 4-stroke and ProXS models. Featuring stylish designs and vents for airflow, they help maintain your engine’s performance while adding a sleek look to your boat.
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1-2 weeks delivery time Designed for Yamaha XTO Offshore V8 5.6L outboards (375 / 425 / 450 HP, 25" shaft, from 2018 onward), the ventilated Oceansouth motor cover (Osculati 46.541.35) offers maximum protection during both storage and navigation. Constructed from ATLAS 340 g/m² marine-grade polyester, this waterproof, UV-resistant, and breathable cover is engineered for demanding offshore conditions. The integrated ventilation system ensures operational safety without the need to remove the cover during engine use.
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$ 287.29
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1-2 weeks delivery time Custom-fitted for Yamaha V6 4-stroke 4.2L outboard engines (F225 / F250 / F300 from 2021 onward and F350 from 2024), the Oceansouth storage motor cover (Osculati 46.541.42) is designed for use when the engine is off. Made from ATLAS 340 g/m² marine-grade polyester, it provides waterproof, UV-resistant, and breathable protection for open-area storage. Its snug fit prevents exposure to dust, rain, and sun during non-operational periods.
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$ 95.90
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1-2 weeks delivery time Specifically shaped for Yamaha V6 4.2L and 4.3L outboard engines (F225 / F250 / F300 from 2021 onward, including F350 from 2024), the ventilated Oceansouth motor cover (Osculati 46.541.52) is suitable for both storage and navigation. Made from ATLAS 340 g/m² marine-grade polyester, the cover is waterproof, UV-resistant, and breathable. The integrated ventilation system allows safe engine operation while the cover is installed, making it ideal for continuous outdoor use.
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$ 170.53
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1-2 weeks delivery time Specifically designed for full coverage of Yamaha XTO Offshore V8 5.6L outboard motors (375 / 425 / 450 HP, 25" shaft, from 2018 onward), the Oceansouth full engine cover (Osculati 46.551.01) provides maximum protection during storage. Made from heavy-duty ATLAS 340 g/m² marine-grade polyester, it is waterproof, breathable, and UV-resistant. The cover protects the entire engine body—including cowling and lower unit—making it ideal for long-term open-area storage in harsh marine conditions.
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$ 391.94
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1-2 weeks delivery time Designed for Yamaha XTO Offshore V8 5.6L outboards (375 / 425 / 450 HP, 30" shaft, 2018 and newer), the Oceansouth full engine cover (Osculati 46.551.02) provides total engine protection during storage. Made from ATLAS 340 g/m² marine-grade polyester, it is waterproof, breathable, and UV-resistant. Specifically shaped to cover both the top cowling and lower leg, this heavy-duty cover is ideal for long-term protection in open-area environments.
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$ 410.47
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1-2 weeks delivery time Designed for Yamaha XTO Offshore V8 5.6L outboards (375 / 425 / 450 HP, 35" shaft, 2018 and newer), the Oceansouth full engine cover (Osculati 46.551.03) offers comprehensive protection during long-term storage. Made from marine-grade ATLAS 340 g/m² polyester, the cover is waterproof, UV-resistant, and breathable. It fully encloses both the cowling and lower unit, making it ideal for off-season or open-area protection in harsh marine environments.
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$ 440.54
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1-2 weeks delivery time Custom-designed for Yamaha V8 4-stroke 5.3L outboards (F350 HP, 25" shaft, from 2007 onward), the Oceansouth full engine cover (Osculati 46.551.04) provides complete protection for the entire engine body during storage. Made from durable ATLAS 340 g/m² marine-grade fabric, it is waterproof, breathable, and UV-resistant. Ideal for long-term open-area storage, this cover shields the cowling and leg from sun, salt, and environmental exposure when the engine is not in use.
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$ 236
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1-2 weeks delivery time Designed for Yamaha V8 4-stroke 5.3L outboard engines (F350 HP, 30" shaft, from 2007 onward), the Oceansouth full engine cover (Osculati 46.551.05) offers complete engine protection during storage. Manufactured using ATLAS 340 g/m² marine-grade polyester, this waterproof, breathable, and UV-resistant cover fully encloses both the cowling and lower leg, making it ideal for open-area or trailer-based storage.
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$ 251.45
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1-2 weeks delivery time Engineered for Yamaha V6 4-stroke 4.2L outboards (F225F / F250D / F300B, with 25" shaft, model years 2010–2020), the Oceansouth full engine cover (Osculati 46.551.07) offers complete protection during storage. Made from ATLAS 340 g/m² marine-grade polyester, the cover is waterproof, UV-resistant, and breathable. It provides total coverage for the engine cowling and leg, shielding it from sun, salt, and weather when the engine is not in use.
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$ 225.90
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1-2 weeks delivery time Purpose-built for Yamaha V6 4-stroke 4.2L outboard engines (F225F / F250D / F300B, 30" shaft, model years 2010–2020), the Oceansouth full engine cover (Osculati 46.551.08) offers full-length protection for both upper cowling and lower leg. Made from ATLAS 340 g/m² marine-grade polyester, it is waterproof, breathable, and UV-resistant—ideal for open-air, trailer, or seasonal storage while the engine is off.
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$ 233.13
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1-2 weeks delivery time Custom-designed for Yamaha 4-cylinder 4-stroke 2.8L outboards (F150 / F175 / F200 HP, 20" shaft, from 2015 onward), the Oceansouth full engine cover (Osculati 46.551.10) delivers complete top-to-bottom protection for storage. Made from ATLAS 340 g/m² marine-grade polyester, it is waterproof, breathable, and UV-resistant, ensuring year-round defense against sun, salt, and weather when the engine is not in operation.
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$ 163.11
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1-2 weeks delivery time Tailored for Yamaha 4-cylinder 4-stroke 2.8L outboards (F150 / F175 / F200 HP, 25" shaft, from 2015 onward), the Oceansouth full engine cover (Osculati 46.551.11) ensures comprehensive storage protection. Made from heavy-duty ATLAS 340 g/m² marine-grade polyester, the cover is waterproof, breathable, and UV-resistant. It completely encloses the cowling and lower leg, making it ideal for open-air, marina, or trailer storage when the engine is off.
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$ 170.82
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1-2 weeks delivery time Specifically designed for Yamaha 4-cylinder 4-stroke 1.8L outboards (115 / 130 HP, 20" shaft, from 2014 onward), the Oceansouth full engine cover (Osculati 46.551.13) delivers complete protection for both the cowling and lower leg during storage. Constructed from ATLAS 340 g/m² marine-grade polyester, it is waterproof, breathable, and UV-resistant—perfect for open-area, marina, or trailer storage when the engine is not in operation.
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$ 145.32
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1-2 weeks delivery time Specifically tailored for Yamaha 4-cylinder 4-stroke 1.8L outboards (115 / 130 HP, 25" shaft, from 2014 onward), the Oceansouth full engine cover (Osculati 46.551.14) offers full protection for the engine cowling and lower unit during storage. Built from ATLAS 340 g/m² marine-grade polyester, it is waterproof, breathable, and UV-resistant, ensuring reliable defense against sun, salt, and weather when the engine is not in use.
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$ 148.89
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1-2 weeks delivery time Designed for Yamaha 4-cylinder 4-stroke 1.8L outboards (F75D, F90C, F100F HP, 20" shaft, from 2017 onward), the Oceansouth full engine cover (Osculati 46.551.16) provides comprehensive protection during storage. Made from ATLAS 340 g/m² marine-grade polyester, it is waterproof, breathable, and UV-resistant, fully enclosing the cowling and lower leg for optimal defense against sun, moisture, and salt exposure when the engine is idle.
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$ 146.08
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1-2 weeks delivery time Purpose-built for Yamaha 4-cylinder 4-stroke 1.8L outboards (F75D, F90C, F100F HP, 25" shaft, from 2017 onward), the Oceansouth full engine cover (Osculati 46.551.17) offers complete cowling and leg protection during storage. Manufactured from ATLAS 340 g/m² marine-grade polyester, it is waterproof, breathable, and UV-resistant, ensuring reliable defense against sun, moisture, and salt damage when the engine is not in operation.
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$ 148.58
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1-2 weeks delivery time Custom-fitted for Yamaha 4-cylinder 4-stroke 996 cc outboards (F50, F60, F70 HP, 20" shaft, from 2010 onward), the Oceansouth full engine cover (Osculati 46.551.19) offers total protection for the upper cowling and lower leg during storage. Built from ATLAS 340 g/m² marine-grade polyester, it is waterproof, breathable, and UV-resistant—ensuring long-lasting defense against sunlight, moisture, and salt exposure when the engine is not in use.
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$ 115.64
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1-2 weeks delivery time This full engine motor cover is specifically shaped for Yamaha 3-Cylinder 4T 747 cc engines (F30/40 HP, Leg 20", 2009>). Manufactured from premium ATLAS 340 g/m² fabric, it provides waterproof, breathable, and UV resistant protection. Designed for outdoor storage, it ensures long-lasting durability and precise fit for your outboard motor.
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$ 93.71
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1-2 weeks delivery time This full engine motor cover is tailored for Yamaha 2-Cylinder 4T 432 cc engines (F25C/G, F15B, F20C – Leg 15", 2017> to 2023>). Constructed from ATLAS 340 g/m² marine-grade fabric, it ensures waterproof, breathable, and UV resistant protection. Designed for outdoor storage, the cover delivers durability, precise fit, and complete engine coverage.
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$ 74.10
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1-2 weeks delivery time This full engine motor cover is designed for Yamaha 2-Cylinder 4T 432 cc outboards, including F25C/G, F15C, and F20C models with 20" leg (2017> to 2023>). Made of premium ATLAS 340 g/m² marine fabric, it provides waterproof, breathable, and UV resistant protection. Engineered for outdoor storage, the cover ensures a secure fit, maximum durability, and long-term preservation of your outboard motor.
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$ 81.71
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How does a breathable outboard engine cover protect your motor year-round from harsh marine conditions?
A breathable outboard engine cover protects your motor year-round by allowing air to circulate, preventing moisture buildup and mildew, which can damage the engine over time. Made from durable materials like marine-grade polyester or canvas, these covers are designed to fit snugly over the cowling, shielding it from harmful environmental conditions like UV rays and saltwater. In addition to protection, modern and stylish designs, such as grey camo, can add a sleek look to your boat while ensuring your outboard motor remains in top condition.
For a selection of premium covers, check out our Evinrude Boat Motor Covers, designed to safeguard your engine from the elements.
What role does proper cover fit play in ensuring maximum protection for outboard motors?
Proper cover fit is essential in ensuring maximum protection for outboard motors by providing a snug barrier that shields the engine from harmful elements like UV rays, moisture, and debris. Whether using a custom-made motor hood cover or a marine canvas boat cover, having the dimensions that closely match your particular model prevents gaps that could expose the motor to potential damage. A well-fitted cover, like those made from marine-grade polyester or with grey camo designs, offers year-round protection while adding style to your boat and ensuring your outboard motor looks and performs at its best.
For a perfect fit and superior protection, explore our Mercury Outboard Motor Covers, designed for durability and all-weather defense.
What are the benefits of using marine-grade polyester in boat engine covers for UV and moisture protection?
Marine grade polyester in boat engine covers offers superior UV and moisture protection, ensuring your outboard motor is shielded year-round from harsh marine conditions. The durable cover material helps prevent fading and water damage while maintaining breathability, making it both functional and stylish. Whether it's a custom-made or universal cover, this top-of-the-line protection adds a touch of style to your outboard boat while keeping it in the best condition possible.
For Yamaha owners, explore our collection of Yamaha Outboard Motor Covers for tailored fit and long-lasting performance.