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  3. MERCURY 864612-C

MERCURY 864612-C Mpi Vortec Gm Engine Exhaust Manifold 4.3 V6

fits model: Marine, Mercruiser. make: Mercury.

864612-c Mercury Marine Mercruiser 4.3 L Mpi Vortec Gm V6 Engine Exhaust Manifold

( Manufacturer Part Number: 864612-C ), ( Part Type: Engine Exhaust Manifold ), ( Country/region Of Manufacture: United States )

Review MERCURY 4.3 Mpi Vortec Gm V6 Engine Exhaust Manifold fits MERCRUISER MARINE

The Mercury 864612-C Marine Mercruiser 4.3 MPI Vortec GM V6 engine exhaust manifold is a crucial component of your marine engine's exhaust system. This manifold is specifically designed for use with the Mercruiser 4.3 MPI Vortec GM V6 engine, ensuring a proper fit and optimal performance.

The exhaust manifold is engineered from high-quality materials, including cast iron for durability and heat resistance. Each manifold is precision-machined to ensure a precise fit and efficient exhaust flow. The manifold features a 5-bolt flange design for easy installation and removal, making it a popular choice among marine engine enthusiasts and repair professionals.

One of the most notable features of this exhaust manifold is its integrated exhaust gas recirculation (EGR) system. This system helps to reduce harmful emissions by recirculating a portion of the exhaust gas back into the engine's combustion chamber. The EGR system is designed to work seamlessly with the engine, improving its overall efficiency and compliance with current emissions regulations.

Another important feature of this exhaust manifold is its robust design. The manifold is built to withstand the rigors of marine use, including exposure to saltwater, extreme temperatures, and rough seas. The cast iron construction is resistant to corrosion, ensuring that the manifold will last for many seasons of use.

The Mercury 864612-C Marine Mercruiser 4.3 MPI Vortec GM V6 engine exhaust manifold is also designed for easy maintenance. The 5-bolt flange design allows for quick access to the exhaust system, making it easier to perform routine maintenance tasks such as inspecting the exhaust gaskets or replacing the manifold itself.

Overall, the Mercury 864612-C Marine Mercruiser 4.3 MPI Vortec GM V6 engine exhaust manifold is a high-performance, durable, and versatile component of your marine engine's exhaust system. Its precision engineering, integrated EGR system, and robust design make it an essential addition to any marine engine installation. Whether you're a seasoned marine engine enthusiast or a newcomer to the world of boating, this exhaust manifold is a reliable and effective solution for your exhaust needs.

Pros and Cons of Buying a Mercury 864612-C Marine Mercruiser 4.3 MPI Vortec GM V6 Engine Exhaust Manifold

Introduction:

The Mercury 864612-C Marine Mercruiser 4.3 MPI Vortec GM V6 Engine Exhaust Manifold is a crucial component of the engine system for boats. This part is responsible for connecting the engine's cylinder heads to the exhaust system. In this analysis, we will discuss the advantages and disadvantages of buying this exhaust manifold.

Pros:

1. Durability: The Mercury 864612-C exhaust manifold is made of high-quality materials, ensuring long-lasting performance in harsh marine environments.

2. Improved Engine Performance: This exhaust manifold is designed to optimize exhaust gas flow, which can lead to increased horsepower and torque, resulting in better overall engine performance.

3. OEM (Original Equipment Manufacturer) Part: By purchasing an OEM part, you can ensure that it is specifically designed to work with your Marine Mercruiser engine and will fit perfectly.

4. Reduced Emissions: The Mercury 864612-C exhaust manifold is designed to minimize exhaust gas leakage, which can help reduce harmful emissions and improve your boat's environmental footprint.

Cons:

1. Cost: OEM parts, such as the Mercury 864612-C exhaust manifold, can be more expensive compared to aftermarket alternatives.

2. Availability: Depending on your location and the availability of the part from your dealer or distributor, you may experience a delay in receiving the part, which could impact your boat's downtime.

3. Complex Installation: Installing an exhaust manifold can be a complex process, especially if you are not an experienced mechanic or boat owner. It may require specialized tools and knowledge to ensure proper installation.

Conclusion:

The Mercury 864612-C Marine Mercruiser 4.3 MPI Vortec GM V6 Engine Exhaust Manifold offers several advantages, including improved engine performance, durability, OEM quality, and reduced emissions. However, it also comes with potential drawbacks, such as cost, availability, and complex installation.

Recommendation:

If you value the benefits of OEM quality and performance, and are willing to invest in a premium exhaust manifold, the Mercury 864612-C is an excellent choice. However, if you are looking for a more cost-effective alternative, you may consider researching aftermarket exhaust manifold options. Ultimately, it is important to weigh the pros and cons based on your specific needs, budget, and expertise before making a decision.

Details:

Part was removed from a 4.3 MPI MerCruiser Marine engine. What you see in the pictures is what get. Thanks -Mike. Look at pictures closely and ask any questions, I try to describe parts as best can.

Please look at all pictures and read entire before buying. Mounting hardware is only included if it shown in the pictures. Shelf 29-14-6-A. I will do my best to resolve the issue.

Condition: Good used condition.

part #: 864612 prices

  • $295.00-$974.00

specifications intengster:

  • for models: Marine, Mercruiser
  • for makes: Mercury
  • mpn: 864612-c
  • part type: Engine Exhaust Manifold
  • country/region of manufacture: United States

returns intengster:

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

shipping intengster:

  • type: Calculated
  • service: FedEx Ground or FedEx Home Delivery, UPS Ground, FedEx 2Day
  • carrier: FedEx, UPS
  • cost: $35.59
  • class: Standard, Expedited
  • transit: 3-7 Days

seller intengster:

  • city: Huron, Ohio
  • # reviews: 104538
  • rating: 99.1%

general intengster:

  • Boat Parts > Sterndrive Motors Components > Internal Engine Parts
  • condition: Used

payments intengster:

  • credit card: Diners-club
  • wallet: Apple-pay
  • other

offer intengster:

  • started: May 7, 2025
  • quantity: 2
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
for models: marine, mercruiser, for makes: mercury, part type: engine exhaust manifold, country/region of manufacture: united states,
category: boat parts > sterndrive components > internal engine parts, sku: 2094176744190772,
Mercury 864612 Is Similar To:
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5 offers $295.00–$974.00 USD
  • New other (see details). Offer #1 priced at $295.00 + $27.95 shipping estimate = $322.95* total. Select from the following 5 reasons. Manifold is for port or starboard side of the engine.+$27.95 shipping
  • New. Offer #2 priced at $499.99 + $49.99 shipping estimate = $549.98* total. They are painted and individually leak tested Each manifold is heavy duty cast iron.+$49.99 shipping
  • New. Offer #3 priced at $974.00 + $0.00 shipping estimate = $974.00* total. Risers are 14 degree, 4" outlet and 8 1/4" Tall. Two Risers, replaces 864591T02.FREE SHIPPING
  • New. Offer #4 priced at $299.96 + $0.00 shipping estimate = $299.96* total. Exhaust Pipe. Exhuast Manifold.FREE SHIPPING
  • Used. Offer #5 priced at $995.00 + $125.00 shipping estimate = $1120.00* total. Madison, WI Stock# 4644. You are viewing a pair of exhaist manifolds with risers removed from a MerCruiser 4.3L sterndrive engine.+$125.00 shipping

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