1. Boat Parts In Otsterndriv Sterndrive Prices For Sale.
  2. sku: 4497400532608631
  3. MERCRUISER 802556

MERCRUISER 802556 Gm Water Cylinder Head Set 5.0

802556 Mercruiser Gm 5.0 Oem Fresh Water Used Cylinder Head Set 2

( Brand: Mercruiser ), ( Manufacturer Part Number: 802556 ), ( Part Type: Cylinder Head )

Review MERCRUISER Gm 5.0 Oem Fresh Water Used Cylinder Head Set

The Mercruiser 802556 GM 5.0 Liter Water Cylinder Head Set is a crucial component for the smooth operation of your Mercruiser 5.0 Liter engine. This cylinder head set is specifically designed for marine applications and is engineered to deliver reliable performance even in the harshest marine environments.

This set includes two cylinder heads, each featuring four valves with a compact combustion chamber design that optimizes fuel efficiency and power output. The heads come equipped with durable, corrosion-resistant materials, including a cast iron cylinder head and a stainless steel valve train.

The intake and exhaust ports are generously sized to ensure optimal air and fuel flow, while the head gaskets are designed to provide a tight seal and prevent leakage. The heads are also equipped with hard-anodized aluminum valve guides and seats, which provide excellent durability and wear resistance.

The included valves are made of stainless steel and feature a roller camshaft design, which reduces friction and increases valve lift for improved engine performance. The valves are also adjustable, allowing for fine-tuning of the engine for optimal performance and efficiency.

The Mercruiser 802556 GM 5.0 Liter Water Cylinder Head Set is a high-quality, durable solution for maintaining the peak performance of your Mercruiser 5.0 Liter engine. Whether you're cruising the open waters or competing in a high-performance race, this cylinder head set is designed to deliver the power and reliability you need to get the most out of your marine engine.

The Mercruiser 802556 GM 5.0 water cylinder head set is a crucial component for marine engines, responsible for providing coolant flow and maintaining engine temperature. This part is essential for ensuring the longevity and optimal performance of the engine. In this discussion, we will weigh the pros and cons of purchasing this Mercruiser cylinder head set.

Pros:

1. Improved Performance: A new cylinder head set can enhance the overall performance of the marine engine by ensuring efficient cooling and minimizing heat buildup.

2. Durability: The OEM (Original Equipment Manufacturer) part is specifically designed to fit and function optimally within the engine system. It is engineered to withstand the harsh marine environment, providing a long service life.

3. Enhanced Safety: Proper engine cooling is crucial for the safety of boat operators and passengers, as an overheated engine can lead to catastrophic failure.

4. Reduced Maintenance Costs: While the upfront cost of a new cylinder head set may be significant, it can save you money in the long run by reducing the need for costly repairs and engine replacements.

Cons:

1. Cost: A new OEM cylinder head set can be a considerable investment, especially for smaller budgets.

2. Availability: Depending on the specific model and availability, it may take some time to obtain the part from authorized dealers.

3. Installation Complexity: Installing a new cylinder head set requires specialized knowledge and tools, which may necessitate the involvement of a professional mechanic or marine service center.

Conclusion:

The Mercruiser 802556 GM 5.0 water cylinder head set is a crucial investment for ensuring the longevity and optimal performance of your marine engine. While it comes with a significant upfront cost, the benefits, such as enhanced performance, durability, safety, and potentially reduced maintenance costs, make it a worthwhile investment. However, it is essential to consider the availability and complexity of the installation process before making a purchase.

Recommendation:

If you are experiencing engine cooling issues, or if you are planning to perform routine maintenance on your marine engine, investing in a new Mercruiser 802556 GM 5.0 water cylinder head set may be the best choice for your boat. To ensure a smooth purchasing and installation process, consider contacting a reputable marine service center or authorized dealer to discuss your specific needs and requirements.

Details:

Horse Power: V8. This sale is for a set of used Cylinder Heads Mercruiser GM 5.0L V8. Mercury Part Number 802556, Casting number 12558059, These cylinder heads are in excellent used condition. Condition: Used.

Brand: Mercruiser. They are from fresh water use and not corroded, cracked, or warped.

part #: 802556 prices

  • $360.00-$1000.00

specifications otsterndriv:

  • brand: Mercruiser
  • mpn: 802556
  • part type: Cylinder Head

returns otsterndriv:

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

general otsterndriv:

  • Boat Parts > Sterndrive Motors Components > Other
  • condition: Used

seller otsterndriv:

  • # reviews: 28709
  • city: Green Bay, Wisconsin
  • rating: 99.6%

shipping otsterndriv:

  • cost: $241.01
  • class: Standard, One-day
  • service: UPS Ground, UPS Next Day Air Saver
  • transit: 2-5 Days
  • carrier: UPS
  • type: Calculated

payments otsterndriv:

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

offer otsterndriv:

  • options: Ship-to-home
  • quantity: 1
  • best offers: True
  • availability: In Stock
  • sold: 0
  • started: December 1, 2025
part type: cylinder head,
category: boat parts > sterndrive components, sku: 4497400532608631,
Mercruiser 802556 Is Similar To:
otsterndriv logo
4 offers $360.00–$1000.00 USD
  • Used. Offer #1 priced at $1000.00 + $507.95 shipping estimate = $1507.95* total. They are from fresh water use and are not corroded, cracked, or warped. MPN: .+$507.95 shipping
  • New. Offer #2 priced at $649.00 + $90.57 shipping estimate = $739.57* total. Casting / OEM 1996-2002 ( 8 Bolt Intake ). All cylinder heads outperform their competitors! Cylinder Heads are sold each.+$90.57 shipping
  • Used. Offer #3 priced at $360.00 + $50.00 shipping estimate = $410.00* total. Good Condition, Ready To Install.+$50.00 shipping
  • New other (see details). Offer #4 priced at $449.95 + $135.17 shipping estimate = $585.12* total. Complete with valves and springs. 8 Bolt intake manifold pattern.+$135.17 shipping

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