MERCRUISER BG74A Gm Base Engine 454/7.4

( Brand: Mercruiser ), ( Manufacturer Part Number: BG74A ), ( Part Type: Engine ), ( Non-domestic Product: No ), ( Stroke: 4-stroke ), ( Warranty: 2 Year ), ( Engine Hp : 330 ), ( Country/region Of Manufacture: United States ), ( Rotation: Left-hand )

Review MERCRUISER Gm 454/7.4 Generation #4 Replacement Base Engine fits 454

Mercruiser BG74A GM 454/7.4 Base Engine - Powerful Marine Propulsion Solution

The Mercruiser BG74A GM 454/7.4 Base Engine is a remarkable powerhouse designed for marine applications, offering a seamless blend of performance, reliability, and efficiency. This engine is part of the renowned family of engines produced by Mercruiser, a brand known for its commitment to quality and innovation.

With a displacement of 7.4 liters, the BG74A delivers an impressive power output of 360 horsepower at 4000 RPM. This engine is equipped with a fuel-injected system, ensuring optimal combustion for maximum power and fuel efficiency. The fuel injection system also enhances the engine's cold-weather starting capabilities, making it a reliable choice even in challenging conditions.

The BG74A features a cast iron block and aluminum heads, offering a robust construction that can withstand the rigors of marine use. The engine's overhead valve design allows for efficient combustion and optimal power delivery, while the hydraulic lifters ensure smooth and consistent operation.

The engine is equipped with a heavy-duty serpentine accessory drive system, which reduces vibration and noise, ensuring a quiet and comfortable boating experience. The BG74A also comes with an electronic ignition system, which provides precise spark timing for optimal engine performance.

The Mercruiser BG74A GM 454/7.4 Base Engine is a versatile power solution, suitable for a wide range of marine applications, from high-performance boats to cruisers and yachts. Its powerful output, combined with its reliability and efficiency, makes it an excellent choice for those seeking a high-performance marine engine. Whether you're cruising the open seas or fishing in the local waters, the Mercruiser BG74A GM 454/7.4 Base Engine is the ideal partner for your marine adventures.

1. Powerful: With a displacement of 7.4 liters and delivering up to 350 horsepower, this engine is capable of providing ample power for medium to large-sized boats.

2. Durable: Known for its robustness, the GM 454 engine has a reputation for longevity, which can save you money in the long run.

3. Wide Availability: Parts for this engine are relatively easy to find, which can simplify maintenance and repair tasks.

1. Fuel Consumption: Due to its size and power, the GM 454 engine can consume a significant amount of fuel, leading to higher operating costs.

2. Weight: Being a larger engine, it adds more weight to the boat, which may affect its performance and fuel efficiency.

3. Complexity: The engine's complexity may require more skilled technicians for maintenance and repair, which could potentially increase costs.

In conclusion, the Mercruiser BG74A GM 454/7.4 Base Engine offers impressive power and durability, making it a good choice for those who prioritize power and performance over fuel efficiency and weight. However, if you're looking for a more economical option, you may want to consider a smaller or more fuel-efficient engine. It's always important to weigh these factors against your specific needs and budget before making a purchase decision. If you're unsure, consulting with a marine engine specialist can help you make an informed decision.

Details:

Remanufactured/Rebuilt/Refurbished/Re powered Base Engine. Push rods new or refurbished. Pleasure craft. Set up for 6-bolt timing cover.

Left Hand Rotation. Connecting rods new or refurbished. Timing components new. Valve covers new.

Oil pump new. Engine is clean, painted, and torqued to perfection. Timing cover new. Limited Warranty: 2-Year Warranty included with purchase.

Replacement for. Oil pan new. Cylinder Heads refurbished. Customer Pick-up Free.

Block refurbished. Estimated hipping times may vary by season. Rocker arm assembly new or refurbished. Crankshaft new or refurbished.

Base Engine includes the following, with new and refurbished internal parts. Lifters new. All bearings-cam/rod/main new. Pistons new.

Camshaft new or refurbished.

part #: bg74a prices

• $127.00-$238.50

specifications completegengin:

• for models: 454
• brand: Mercruiser
• mpn: Bg74a
• part type: Engine
• non-domestic product: No
• stroke: 4-stroke
• warranty: 2 Year
• engine hp : 330
• country/region of manufacture: United States
• rotation: Left-hand

offer completegengin:

• started: October 8, 2025
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• sold: 0

shipping completegengin:

returns completegengin:

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

seller completegengin:

• city: Hialeah, Florida
• # reviews: 171
• rating: 100.0%

general completegengin:

• condition: Remanufactured
• Boat Parts > Inboard Engines Components > Complete Gas Engines

payments completegengin:

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

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