1. Boat Parts In Otsterndriv Sterndrive Prices For Sale.
  2. sku: 4153813130234772
  3. MERCRUISER MERCURY 806427T

MERCRUISER MERCURY 806427T Transmission Oil Cooler

806427t Mercruiser Mercury Oem Transmission Oil Cooler

( Brand: Mercruiser Mercury ), ( Manufacturer Part Number: 806427T ), ( Part Type: Oil Transmission Cooler ), ( Warranty: 30 Day ), ( Authorized Reseller/dealer: No )

Review MERCRUISER MERCURY Oem Transmission Oil Cooler

The Mercruiser Mercury 806427T Transmission Oil Cooler is an essential component for maintaining optimal performance and cooling of your Mercury Marine transmission system. This cooler, featuring part number 806427, is meticulously engineered to ensure efficient heat dissipation, extending the life of your transmission and improving overall boat performance.

This cooler is designed specifically for use with Mercury Marine transmissions and is constructed from high-quality materials that deliver superior durability and reliability. The exterior casing is made from rugged aluminum, while the interior contains a finned core for increased surface area and enhanced heat transfer.

The Mercruiser Mercury 806427T Transmission Oil Cooler is a compact, yet powerful design, making it the perfect choice for a wide range of boat applications. Its sleek, streamlined shape not only ensures optimal cooling but also contributes to the overall aesthetic appeal of your boat.

This cooler utilizes a pressure-tested, welded design for maximum strength and durability. The inlet and outlet ports are strategically placed to minimize turbulence and optimize flow, ensuring that cooled transmission oil is consistently delivered to the transmission.

Installation of the Mercruiser Mercury 806427T Transmission Oil Cooler is a straightforward process, thanks to its user-friendly design and included installation hardware. The cooler comes with mounting brackets and necessary hardware, making installation quick and hassle-free.

In summary, the Mercruiser Mercury 806427T Transmission Oil Cooler is a crucial investment for any boat owner looking to maximize the performance and lifespan of their Mercury Marine transmission system. With its robust aluminum construction, finned core design, and strategic port placement, this cooler delivers efficient, reliable cooling that will keep your boat running at its best.

MerCruiser/Mercury 806427T Transmission Oil Cooler: A Detailed Analysis

The MerCruiser/Mercury 806427T Transmission Oil Cooler is a crucial component in maintaining the optimal performance and longevity of MerCruiser and Mercury outboard engines. In this analysis, we will discuss the advantages and disadvantages of purchasing this transmission oil cooler.

Advantages:

1. Enhanced Engine Performance: By efficiently cooling the transmission oil, the cooler helps the engine perform at its best, ensuring smooth power delivery and reducing the risk of overheating.

2. Prolonged Engine Life: Regular oil cooling helps prevent excessive wear and tear on the engine components, ultimately contributing to a longer service life.

3. Improved Fuel Economy: Properly cooling the transmission oil can lead to improved fuel economy by reducing the engine's workload and allowing it to run more efficiently.

4. Better Shift Quality: A well-functioning transmission oil cooler ensures consistent oil temperature, resulting in better shift quality and reduced gear slippage.

5. Protection Against Corrosion: The cooler is constructed from materials resistant to corrosion and marine environments, ensuring durability and longevity.

Disadvantages:

1. Cost: The MerCruiser/Mercury 806427T Transmission Oil Cooler may be more expensive than some aftermarket alternatives, making it a significant investment for boat owners.

2. Installation Complexity: Installing the transmission oil cooler can be a complicated process, particularly for those without mechanical experience. Professional installation is usually recommended.

3. Maintenance: Regular maintenance, including flushing the cooler and changing the coolant, is required to ensure the cooler continues to function efficiently and effectively.

Conclusion:

The MerCruiser/Mercury 806427T Transmission Oil Cooler is an essential component for maintaining the performance and longevity of MerCruiser and Mercury outboard engines. Its advantages, such as enhanced engine performance, prolonged engine life, improved fuel economy, better shift quality, and protection against corrosion, far outweigh the disadvantages, including cost, installation complexity, and maintenance requirements. For boat owners seeking optimal engine performance and longevity, investing in a high-quality transmission oil cooler like the 806427T is strongly recommended.

Details:

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part #: 806427t prices

  • $135.00-$279.95

specifications otsterndriv:

  • brand: Mercruiser Mercury
  • mpn: 806427t
  • part type: Oil Transmission Cooler
  • warranty: 30 Day
  • authorized reseller/dealer: No

payments otsterndriv:

  • credit card: Discover
  • other
  • wallet: Apple-pay

general otsterndriv:

  • condition: New other see details
  • Boat Parts > Sterndrive Motors Components > Other

seller otsterndriv:

  • city: Plainwell, Michigan
  • # reviews: 29448
  • rating: 99.9%

offer otsterndriv:

  • best offers: True
  • started: October 9, 2025
  • options: Ship-to-home
  • sold: 0
  • quantity: 1
  • availability: In Stock

returns otsterndriv:

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

shipping otsterndriv:

  • carrier: USPS, UPS
  • type: Calculated
  • transit: 3-8 Days
  • cost: $15.35
  • service: USPS Ground Advantage, UPS Ground, USPS Priority Mail
  • class: Standard, Expedited
part type: oil transmission cooler, warranty: 30 day, authorized reseller/dealer: no,
category: boat parts > sterndrive components, sku: 4153813130234772,
Mercruiser Mercury 806427T Is Similar To:
otsterndriv logo
4 offers $135.00–$279.95 USD
  • New. Offer #1 priced at $160.57 + $13.85 shipping estimate = $174.42* total. This part fits the following engines (possibly more). This cooler has a sister part with NPT oil connections.+$13.85 shipping
  • New other (see details). Offer #2 priced at $279.95 + $16.40 shipping estimate = $296.35* total. If a part doesn't work for you for any reason let us know.+$16.40 shipping
  • New. Offer #3 priced at $135.00 + $9.06 shipping estimate = $144.06* total. Direct replacement for mercruiser part number New in box never installed Mr Cool transmission cooler.+$9.06 shipping
  • New. Offer #4 priced at $253.26 + $21.40 shipping estimate = $274.66* total. 350 Mag MPI MIE (Gen ) GM 350 V8 1998. Replaces Quicksilver .+$21.40 shipping

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