Genuine Mercury Marine OEM Parts 8M0077471/473/44991 — ISO 9001-Certified Industrial Replacement Components

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8M0077471, 8M0077473, 300-8M0044991, 827509T7


Ignition Coil 



*This is a genuine Mercury Marine part.

Mercury Certified Engineers On Call.

Click 'Get a Quote' for instant support.


*For other parts inventory, please ​​download the attached list​​ for reference.

Mercury Marine In-Stock Parts List (with ALL Part Numbers)

Appurtenance:

Description

*This is a genuine Mercury Marine part.

The following parts are ​​in stock (available for immediate delivery)​​:

8M0077471, 8M0077473, 300-8M0044991

The ignition coil is a critical component in marine gasoline engine ignition systems, designed to transform the battery's low voltage into the high-voltage spark required to ignite the air-fuel mixture. Through precise electromagnetic induction, it delivers consistent high-energy sparks to the spark plugs, ensuring reliable combustion initiation across all engine operating conditions. Its performance directly impacts engine starting reliability, fuel efficiency, and overall power output.

This product range includes various ignition coil models engineered for specific engine configurations, ignition system types, and voltage requirements. Each coil features precisely wound windings, durable insulation materials, and optimized magnetic circuits to match the performance demands of different Mercury marine engines. Proper selection based on engine specifications and ignition system design is essential for maintaining strong spark energy and preventing misfires.
Manufactured with high-temperature epoxy encapsulation, corrosion-resistant terminals, and moisture-sealed housings, ignition coils withstand the vibration, thermal cycling, and harsh marine environments. Advanced designs incorporate internal voltage regulation and noise suppression for consistent performance.

Regular inspection and testing of ignition coils help identify insulation breakdown, internal shorts, or output degradation before they cause performance issues. Whether used in routine tune-ups, ignition system repairs, or performance upgrades, this product range provides reliable solutions for ensuring strong spark delivery, consistent combustion, and long-term reliability in marine applications.

8M0077471, 8M0077473, 300-8M0044991, 827509T78M0077471, 8M0077473, 300-8M0044991, 827509T7

About Mercury Marine

Mercury Marine is a globally recognized marine propulsion brand headquartered in the United States, with a history spanning more than 80 years. As one of the most influential names in the marine industry, Mercury has built its reputation through continuous innovation, engineering excellence, and a strong commitment to product reliability.

From recreational boating to commercial and professional marine applications, Mercury designs and manufactures engines and related systems that are tested under demanding real-world conditions. Each product is developed to meet strict performance and durability standards, ensuring stable operation in diverse marine environments. Through long-term investment in research and development, Mercury continues to refine its technologies to improve efficiency, safety, and user experience.

Today, Mercury Marine products are widely used across global markets and supported by an extensive network of authorized distributors and service providers. This global presence ensures that customers receive consistent product quality, technical support, and after-sales service throughout the entire lifecycle of their equipment.

The Importance of Choosing Genuine Mercury Parts

Choosing genuine Mercury parts is essential for maintaining the performance, reliability, and safety of a marine propulsion system. Original parts are engineered in accordance with Mercury’s technical specifications, ensuring precise compatibility with the engine and related onboard systems.

In marine environments, even minor differences in component design or tolerance can lead to accelerated wear, reduced efficiency, or unpredictable system behavior. Genuine Mercury parts help minimize these risks by maintaining consistent quality standards and reliable performance characteristics. They are designed to integrate seamlessly with Mercury engines, supporting stable operation under a wide range of conditions.

In addition to performance benefits, using original parts supports long-term system protection. Properly matched components help reduce unnecessary stress on critical systems, simplify maintenance procedures, and contribute to extended service life. This approach provides users with greater confidence during daily operation while also helping preserve the overall value of their equipment.

Why Purchase from Us

As an authorized first-tier Mercury distributor in China, we provide customers with direct access to genuine Mercury products and reliable professional support. With 28 years of experience in the marine industry, we have developed extensive expertise in Mercury systems as well as a deep understanding of local market requirements.

Our long-standing partnership with Mercury allows us to ensure stable product supply, accurate technical information, and compliance with official brand standards. Over nearly three decades, we have served customers across recreational, commercial, and professional sectors, building strong relationships based on trust, consistency, and service quality.

By purchasing through us, customers benefit not only from authentic products, but also from professional consultation, dependable logistics, and long-term after-sales support. We are committed to providing a complete purchasing and ownership experience that aligns with Mercury’s global standards.

Mercury-Certified Technical Support and After-Sales Service

We are supported by a team of Mercury-certified technical engineers who have received official training and certification from Mercury Marine. All installation, maintenance, and after-sales services are provided strictly in accordance with Mercury’s official technical requirements and service guidelines.

Our technical team follows standardized service procedures to ensure accurate diagnostics, proper installation, and reliable maintenance support. This professional approach helps maintain system integrity, reduce operational risks, and ensure consistent performance throughout the service lifecycle.

By delivering after-sales service that aligns with Mercury’s global standards, we help customers maintain long-term confidence in their equipment. From technical consultation to ongoing maintenance support, our goal is to provide professional, transparent, and dependable service throughout the entire ownership experience.

FAQ

Q: What is the minimum order quantity (MOQ) and lead time for international orders?​

A: ​​MOQ:​​ Flexible, from single units to bulk orders. ​​Lead time:​​ In-stock parts ship within 24H (excluding holidays).

​Q: Are your Mercury Marine parts genuine?​

A: Yes. All parts are ​​100% authentic Mercury Marine components​​, with original packaging, anti-counterfeit labels, and traceable part numbers.

​Q: How can I confirm if a part is compatible with my engine?​

A: Provide the ​​engine’s serial/model number​​ from the nameplate. Our technical engineers will verify compatibility for you.

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