OMC Piston P/n 0378278 B348

( Brand: Omc ), ( Part Type: Piston ), ( Manufacturer Part Number: 378278 ), ( Disclaimer: All Parts Come As Pictured. )

Review OMC P/n Johnson Evinrude Piston

The OMC (Outboard Marine Corporation) part number 0378278, also known as the Johnson Evinrude piston B348, is an essential component for the proper functioning of your outboard engine. This piston, manufactured by OMC, is specifically designed for use in Evinrude engines.

This piston is a critical piece of the engine's powertrain, responsible for converting linear motion into rotational force through the transfer of energy between the crankshaft and the connecting rod. The B348 piston is meticulously engineered to ensure optimal performance, reliability, and efficiency.

The piston features a forged aluminum construction, which provides exceptional strength and durability. The piston crown is designed to provide a perfect seal with the engine's cylinder liner, ensuring efficient combustion and optimal power output. The piston skirt is engineered to minimize friction and wear, ensuring a long service life.

The piston also includes a ring package, consisting of a compression ring, an oil control ring, and a top ring. These rings help maintain the piston's seal in the cylinder and control the flow of oil for optimal engine performance.

The OMC 0378278 piston B348 is engineered to meet the highest standards of quality and performance. It is designed to fit and function perfectly in Evinrude engines, ensuring that your outboard motor operates at its best. When it comes time for a piston replacement, trust the proven expertise of OMC and choose the Johnson Evinrude piston B348.

The OMC (Outboard Marine Corporation) part number 0378278, which is a piston for a Johnson/Evinrude B348 engine, is a crucial component for the proper functioning of your outboard motor. Let's discuss the potential advantages and disadvantages of purchasing this piston.

1. OEM (Original Equipment Manufacturer) part: Buying this piston ensures that it is an exact match for your Johnson/Evinrude B348 engine. It is designed, manufactured, and tested by Johnson/Evinrude to meet their specifications, which can lead to improved performance and reliability.

2. Guaranteed fit: Since it is an OEM part, you can trust that it will fit correctly, reducing the likelihood of installation issues.

3. Warranty: Johnson/Evinrude offers a warranty on their OEM parts, providing peace of mind and protection against defects or malfunctions.

1. Cost: OEM parts, like the OMC piston 0378278, are typically more expensive than aftermarket alternatives. However, the potential benefits in terms of fit, performance, and warranty may outweigh the added cost for some consumers.

2. Availability: Depending on your location and the availability of Johnson/Evinrude dealerships, it might be more challenging to obtain this piston compared to aftermarket alternatives, which could lead to longer wait times for repairs or replacements.

In conclusion, the decision to purchase the OMC piston 0378278 for a Johnson/Evinrude B348 engine depends on individual priorities and circumstances. If reliability, performance, and peace of mind are top priorities, an OEM piston like this one may be the best choice, despite the potential added cost and potential availability challenges. On the other hand, if budget is a significant concern, an aftermarket alternative might be a more suitable option. Ultimately, it is essential to consider the specific needs of your outboard motor and your personal preferences when making a decision.

Details:

New in box.

part #: 378278 prices

• $29.99-$36.79

specifications vesselveep:

• for makes: Johnson, Evinrude, Omc
• brand: Omc
• part type: Piston
• manufacturer part number: 378278
• disclaimer: All Parts Come As Pictured.

shipping vesselveep:

• transit: 4-9 Days
• cost: $0.00
• type: Calculated
• class: Standard
• service: USPS Ground Advantage
• carrier: USPS

payments vesselveep:

• wallet: Paypal
• credit card: Diners-club
• other

seller vesselveep:

• rating: 99.8%
• # reviews: 8172
• city: Toms River, New Jersey

general vesselveep:

• condition: New
• Parts Accessories > Boat Parts > Other

returns vesselveep:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

offer vesselveep:

• options: Ship-to-home
• availability: In Stock
• quantity: 1
• started: December 13, 2025
• sold: 0

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