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Prime Guard QUIK78620 SAE 25W-40 4-Stroke Marine Engine Oil, 1 Gallon

Manufacturer

Prime Guard

<h3>Precision Filtration for Every Vehicle</h3> <p>Prime Guard has established itself as a trusted name in automotive filtration, delivering comprehensive protection for engines and vehicle systems across passenger cars, light trucks, and heavy-duty applications. With decades of expertise in filter engineering and manufacturing, the brand focuses on providing dependable filtration solutions that meet the demanding requirements of modern vehicles while offering exceptional value to both professional technicians and DIY enthusiasts.</p> <h3>Comprehensive Filter Coverage</h3> <p>Prime Guard offers one of the industry's most complete lines of oil, air, fuel, and transmission filters for cars and trucks, ensuring that vehicle owners can find the right filtration solution regardless of make or model. The brand's extensive application coverage spans domestic and import vehicles, from economy cars to performance vehicles, and from gasoline engines to diesel powerplants. Prime Guard Filters are manufactured to high quality standards in accordance with Society of Automotive Engineers (SAE) and International Organization for Standardization (ISO) test procedures, providing confidence that each filter meets rigorous industry benchmarks.</p> <h3>Engineered for Performance and Protection</h3> <p>What sets Prime Guard apart is the engineering philosophy behind every filter. Prime Guard filters are designed to meet recommended oil change intervals, tested for quality fit and function, with media designed for maximum efficiency and capacity. This attention to engineering detail ensures that filters not only install correctly but also perform optimally throughout their service life. The filtration media in Prime Guard products balances dirt-holding capacity with flow characteristics, protecting engines from harmful contaminants while maintaining proper system pressure and flow rates.</p> <h3>Quality You Can Trust</h3> <p>With precision engineering and a focus on putting customers first, Prime Guard ensures superior performance, reliability, and value for every mile. The brand's commitment to quality extends from product design through manufacturing, with filters engineered to deliver consistent filtration efficiency that protects critical engine components from premature wear. Whether you're performing routine maintenance on a daily driver or servicing a fleet vehicle, Prime Guard filters provide the protection modern engines need to achieve their designed service life.</p> <p>For professional installers and service centers, Prime Guard represents a filtration solution that delivers OE-quality performance at a competitive price point, making it easier to provide customers with reliable protection without compromise. The brand's broad application coverage and consistent availability make it a practical choice for shops that need dependable parts in stock when customers need them.</p>

Part Number

QUIK78620
08/26/2036 7:08 PM
Sale Price

$9,999.99

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

Prime Guard QUIK78620 is a SAE 25W-40 4-Stroke Marine Engine Oil supplied in a convenient 1-gallon container. Cross-referencing Mercury Marine / Quicksilver part number 8M0078620 (also listed as 92-8M0078620), this conventional marine oil is purpose-built for the demanding conditions found in 4-stroke marine powerplants — where automotive oils simply fall short.

Key Features:

  • Marine-Specific Formulation: A specialized additive package outperforms automotive oils by addressing the unique challenges of salt air, humidity, and continuous high-RPM operation.
  • Broad 4-Stroke Compatibility: Approved for use in all 4-stroke outboard, sterndrive (MerCruiser), inboard, and high-performance marine engines where 25W-40 viscosity is specified.
  • Superior Corrosion & Wear Protection: Industry-leading viscosity retention and strength help prevent corrosion and wear to extend engine life.
  • Thermal Stability: Engineered to eliminate thermal breakdown under extreme RPM, temperature, and load conditions common in marine use.
  • FC-W Certified & Catalyst Compatible: Exceeds all marine industry 4-stroke oil requirements, including FC-W and FC-W Catalyst Compatible certification — safe for use in engines with or without catalytic converters.
  • Emissions System Safe: Will not damage emissions systems, making it suitable for the latest generation of clean-running marine engines.
  • Clean Oil Technology: Helps reduce friction and prevents deposit buildup on internal components for long-term engine reliability.

Cross-Reference Part Numbers: 8M0078620 | 92-8M0078620

This 1-gallon jug of SAE 25W-40 marine engine oil is the ideal choice for boaters who demand factory-recommended protection for their outboard, sterndrive, or inboard 4-stroke engine.

all good

Good product, price and delivery time.

Good Experience

Quick service

Very easy.

So far so good Quick and easy to order

Thank you

The only problem was confusion with process and delivery information. And the picture of the generator wasn't what my pump was for. Despite that, it was right product delivered as fast as Amazon which brought me comfort to the confusion. Thanks for your service.

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