fits model: 454.

( Brand: Mercruiser Crusader ), ( Manufacturer Part Number: 12553838 ), ( Part Type: Intake ), ( Warranty: 30 Days ), ( Country/region Of Manufacture: United States )
The Mercruiser MPI 7.4, 8.2, 454, 502 Intake Plenum V8 Crusader is an essential component for any high-performance marine engine. This intake plenum is specifically designed for MerCruiser's Crusader V8 engines, providing optimal airflow and engine performance.
Measuring 12.5 inches in length, this intake plenum is meticulously crafted from high-quality materials, ensuring durability and reliability under even the most demanding marine conditions. Its unique design features a multi-port injection (MPI) system, which distributes air evenly across all eight cylinders for optimal combustion and enhanced power output.
The intake plenum's smooth internal surfaces reduce turbulence, allowing for a more efficient airflow into the engine. This results in improved engine performance, better fuel efficiency, and reduced exhaust emissions. The intake plenum's design also incorporates a unique resonator chamber that helps to reduce engine noise, providing a quieter and more enjoyable boating experience.
The Mercruiser MPI 7.4, 8.2, 454, 502 Intake Plenum V8 Crusader is easy to install and is compatible with a wide range of MerCruiser Crusader V8 engines. It comes with all necessary hardware and mounting brackets, making installation a straightforward process.
In summary, the Mercruiser MPI 7.4, 8.2, 454, 502 Intake Plenum V8 Crusader is an essential upgrade for any MerCruiser Crusader V8 engine. Its unique design, high-quality materials, and efficient airflow system provide improved engine performance, better fuel efficiency, and reduced exhaust emissions. Whether you're looking to upgrade your existing engine or build a high-performance marine engine, this intake plenum is a must-have component.
Pros of buying Mercruiser MPI 7.4 8.2 454 502 Intake Plenum V8 Crusader:1. High Performance: This intake plenum is designed to increase the engine's power output, providing better acceleration and overall performance.
2. Fuel Efficiency: The intake plenum can improve fuel efficiency by allowing more air and fuel into the engine, reducing the amount of fuel needed to produce the same power output.
3. Durability: Mercruiser is known for its high-quality and durable products, making this intake plenum a reliable choice for long-term use.
4. Easy Installation: The intake plenum is designed for easy installation, saving you time and money on professional installation costs.
5. Compatibility: This intake plenum is compatible with a wide range of V8 Crusader engines, making it a versatile option for boat owners.
Cons of buying Mercruiser MPI 7.4 8.2 454 502 Intake Plenum V8 Crusader:1. High Cost: The intake plenum can be expensive, which may not be within everyone's budget.
2. Potential Need for Tuning: Installing the intake plenum may require additional tuning of the engine to ensure optimal performance.
3. Noise Level: The intake plenum can increase the noise level of the engine, which may be a concern for some boat owners.
Conclusion:The Mercruiser MPI 7.4 8.2 454 502 Intake Plenum V8 Crusader is a high-performance and durable option for boat owners looking to improve their engine's performance. While it can be expensive and may require additional tuning, the potential for improved fuel efficiency and increased power output makes it a worthwhile investment for many.
Recommendation:If you have the budget and are willing to invest in a high-performance intake plenum, the Mercruiser MPI 7.4 8.2 454 502 Intake Plenum V8 Crusader is a great option. However, be sure to consider the potential need for additional tuning and the increased noise level before making your purchase.
This is complete intake assembly. No signs of corrosion. Looks like it was on a fresh water boat. I do not have the ecm.
I have the factory wiring harness to go with it.