MERCURY 12673-C1 Mag Engine Flywheel Wheel Housing 5.7 V8

( Manufacturer Part Number: 12673-C1 ), ( Part Type: Engine Flywheel Wheel Housing ), ( Country Of Origin: United States )

Review MERCURY 5.7 Mag V8 Engine Flywheel Fly Wheel Bell Housing fits MERCRUISER MAGNUM MARINE 350

The Mercury 12673-C1 is a flywheel housing component designed specifically for the Mercruiser 5.7 350 Magnum V8 marine engine. This flywheel housing is an essential part of the engine's powertrain system, responsible for transferring the engine's rotational force to the boat's drive system.

The Mercury 12673-C1 housing is made from high-strength cast iron, ensuring durability and resistance to the harsh marine environment. The housing features a precise bore size of 3.50 inches and is designed to accommodate a standard marine engine flywheel. The housing's surface is finished with a durable, rust-resistant coating to protect against corrosion.

The Mercury 12673-C1 flywheel housing is designed to be a direct replacement for the original equipment manufacturing (OEM) housing. It is engineered to meet or exceed OEM specifications for fit, function, and performance. The housing is also compatible with aftermarket flywheels and accessories, providing flexibility for custom engine builds.

The housing's design includes an integrated bell housing, which securely attaches the engine to the boat's transmission or torque converter. The bell housing is precision-machined to ensure a proper fit and alignment with the engine and transmission.

The Mercury 12673-C1 flywheel housing is backed by the Mercury Marine's reputation for quality and reliability. This component is essential for the proper function of your marine engine and is an investment in the longevity and performance of your boat.

In summary, the Mercury 12673-C1 flywheel housing is a high-strength, cast iron component designed for the Mercruiser 5.7 350 Magnum V8 marine engine. It is engineered to meet or exceed OEM specifications and is compatible with aftermarket flywheels and accessories. Its durable, rust-resistant coating provides protection against the harsh marine environment, ensuring reliable performance and longevity.

Mercury 12673-C1 (Mercruiser 5.7 350 Magnum V8 Marine Engine) - Pros, Cons, and Conclusion

The Mercury 12673-C1, also known as the Mercruiser 5.7 350 Magnum V8 marine engine, is a popular choice for boat owners due to its power and reliability. However, like any engine, it comes with its advantages and disadvantages. In this analysis, we will discuss the pros and cons of this engine to help you make an informed decision.

1. Power and Performance: The Mercury 12673-C1 delivers impressive power and torque, making it suitable for larger boats and high-performance applications.

2. Fuel Efficiency: Despite its power, the engine is relatively fuel-efficient, which can save boat owners money in the long run.

3. Durability: The Magnum V8 engine is known for its robustness and ability to withstand the rigors of marine use.

4. Easy Installation: The engine comes with a flywheel housing, making installation more straightforward compared to other engines without this feature.

5. Versatility: The Mercury 12673-C1 can be used in various marine applications, including pleasure boats, commercial vessels, and military craft.

1. High Initial Cost: The Mercury 12673-C1 is a more expensive option compared to smaller, less powerful engines.

2. Complexity: The engine's complexity requires a high level of maintenance and expertise to ensure proper operation.

3. Weight: The Magnum V8 engine is heavier than some other marine engines, which can impact boat handling and fuel efficiency.

4. Emissions: The engine produces higher emissions compared to some newer, more eco-friendly options.

5. Limited Availability: Due to its age and popularity, finding replacement parts for the Mercury 12673-C1 may be more challenging than for newer engines.

The Mercury 12673-C1 (Mercruiser 5.7 350 Magnum V8 marine engine) offers impressive power, durability, and fuel efficiency. However, it comes with a higher initial cost, complexity, weight, and limited availability of replacement parts. Considering these factors, the Mercury 12673-C1 is an excellent choice for boat owners who require high power and performance, are willing to invest in the engine's maintenance, and have the means to accommodate its size and weight.

If you're in the market for a powerful marine engine and are comfortable with the higher maintenance requirements and initial cost, the Mercury 12673-C1 (Mercruiser 5.7 350 Magnum V8 marine engine) is an excellent choice. However, if you're looking for a more cost-effective, lightweight, and eco-friendly engine, there are other options available that may better suit your needs. It is essential to weigh the pros and cons carefully before making a decision based on your specific boating requirements and budget.

Details:

Condition: Good used condition. Thanks -Mike. Look at pictures closely and ask any questions, I try to describe parts as best can. I will do my best to resolve the issue.

Please look at all pictures and read entire before buying. What you see in the pictures is what get. Part was removed from a MerCruiser 5.7 L 350 Mag V8 GM Marine engine. Mounting hardware is only included if it shown in the pictures.

Shelf 29-14-3-B.

part #: 12673c1 prices

• $149.00-$345.00

specifications otsterndriv:

• for models: Marine, 350, Mercruiser, Magnum
• for makes: Mercury
• mpn: 12673-c1
• part type: Engine Flywheel Wheel Housing
• country of origin: United States

seller otsterndriv:

• city: Huron, Ohio
• # reviews: 119911
• rating: 99.6%

payments otsterndriv:

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

shipping otsterndriv:

• type: Calculated
• cost: $28.39
• transit: 2-6 Days
• carrier: FedEx, UPS, USPS
• service: FedEx Ground / FedEx Home Delivery, UPS Ground, USPS Ground Advantage, FedEx 2Day
• class: Standard, Expedited

offer otsterndriv:

• options: Ship-to-home
• quantity: 1
• sold: 0
• started: March 19, 2026
• availability: In Stock

returns otsterndriv:

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

general otsterndriv:

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

Mercury 12673-C1 Is Similar To:

• 862365 Mercury Mercruiser Mag Horizon Ho Engine Cover Like New Near (43.6% similar) Decals are in great condition. A few small scratches. In great near perfect condition...(October 14th, 2018)
• 10-35366 Mercury Mercruiser Stern Drive Engine Screw (44.3% similar) New oem part...(October 25th, 2018)
• 10-42253 Mercury Mercruiser Alpha Bravo Stern Drive Pivot Bolt (31.4% similar) Ii 0D469859 thru 0F679999 mercruiser alpha one gen. Cat new oem part. Mercury pivot bolt this bolt is for use on various mercruiser stern drives. Feel free to call and order. Ii 0F680000 thru 0K999999 mercruiser alpha one gen. Fits:alpha one gen...(September 29th, 2018)
• 10-49956 Quicksilver Mercury Mercruiser Bravo Alpha Oil Pan Drain Screw (33.3% similar) Quicksilver drain screw for use on many mercruiser, bravo alpha stern drive engines. Over 100 mercruiser stern drives use this oil pan drain plug...(October 1st, 2018)
• 10-59645 Quicksilver Mercury Mariner Mercruiser Alpha Bravo Screw (30.9% similar) New oem part. 750FOR various mercury mariner outboard and mercruiser stern drive engines. Quicksilver screw...(October 23rd, 2018)
• 10-805611 Quicksilver Mercury Mercruiser Bravo Manifold Bolt (35.7% similar) 4l related part numbers: number quicksilver bolt for use on 4l V-8 gm mercruiser bravo ii stern drive engines from mercury 2 v8...(October 7th, 2018)
• 105255 Mercruiser Mercury Trim Tilt Pump Solenoid (27.4% similar) It is in good working condition. It comes as pictured. Trim pump this is a used mercruiser with 1 solenoid as pictured. The return line hole appears to be stripped, see pictures...(September 30th, 2018)
• 105921 Mercury Power Trim Pump Works Tested Mercruiser (25.2% similar) Good used condition working order...(January 23rd, 2019)
• 105932 Mercury Power Pump Mercruiser Sterndrive (33.3% similar) ...(October 20th, 2018)
• 11-32522 Mercury Pack Of Mercruiser Vintage Gimbal Splined Nut (39% similar) Part number mercury marine splinted screw nut transom plate to gimbals housing new oem factory that is now obsolete. For use on vintage mercruiser stern drive engines from fits: I thru IA Ibo ICC package of...(February 18th, 2019)
• 11-41527t 41527 Mercury Mercruiser Alpha Stern Drive Nut Nla (35.7% similar) For use on mercruiser stern drive engines from fits: alpha one SS all thru none SAM ii iii iv v trs up cat mercury marine lock nut new oem factory part that is now obsolete...(October 6th, 2018)