Sierra International 1825400 Pulser Coil For Mercury 8/9.9 Hp 4 Stroke Review

Let’s Dive into Sierra International 1825400 Pulser Coil For Mercury 8/9.9 Hp 4 Stroke

The Sierra International 1825400 Pulser Coil For Mercury 8/9.9 Hp 4 Stroke – it’s not the sexiest piece of gear, granted, but when your outboard sputters and dies miles from shore, it becomes the most beautiful thing in the world. This little coil is designed to replace the O.E. Part Number 16066004 in specific Mercury 8/9.9 HP, 4-Stroke outboard engines (R042475 & Up). Let’s see if it lives up to its crucial role.

My old fishing boat, “The Wanderer,” has a trusty Mercury 9.9, and last season, it started acting up, with intermittent stalling. I suspected the ignition system, and after some troubleshooting, the pulser coil emerged as the prime suspect. I chose the Sierra International 1825400 because of Sierra’s reputation for quality aftermarket marine parts and readily available online reviews.

Upon unboxing, the Sierra pulser coil felt solid and well-made. The construction appeared robust, using what seemed like high-quality marine-grade materials – essential for the harsh marine environment. It looked comparable to the original Mercury coil, with clean wiring and proper connectors.

I considered an OEM Mercury replacement, but the price difference was significant. Other aftermarket options were available, but some had questionable reviews concerning longevity. I was willing to gamble on Sierra, hoping their reputation for quality held true.

My initial excitement was cautious optimism. A pulser coil is a critical component, and a failure at sea can be dangerous. I was eager to install it and get back on the water, but also concerned about its long-term reliability.

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Real-World Testing: Putting Sierra International 1825400 Pulser Coil For Mercury 8/9.9 Hp 4 Stroke to the Test

First Use Experience

I tested the Sierra International 1825400 Pulser Coil on “The Wanderer” during a week-long fishing trip in the Puget Sound. The conditions ranged from calm, sunny days to choppy waters and light rain. I was eager to see if it would solve my stalling problems.

Installation was straightforward; it was a direct replacement for the old coil, with no modifications needed. The engine fired right up after the installation, which was a relief, and idled smoothly. During the first few hours, the engine ran flawlessly, at various speeds, in various conditions.

There were no immediate issues, and “The Wanderer” performed like new, suggesting a successful repair. The smooth running of the outboard instilled a confidence I hadn’t felt since the intermittent stalling started.

Extended Use & Reliability

After several months of consistent use, the Sierra International 1825400 Pulser Coil continues to perform admirably. There have been no further instances of stalling or ignition issues. The coil has been through several long runs, exposed to salt spray, and has stood up to the test.

There are no visible signs of wear and tear, and the coil shows no evidence of corrosion. I routinely spray the engine components with a corrosion inhibitor, which likely contributes to the longevity of the coil.

Compared to the unreliable performance before the replacement, the Sierra coil has been a game-changer. The engine now starts easily, runs smoothly, and provides the reliability I need when I’m miles offshore. It definitely outperforms the old, failing coil.

Breaking Down the Features of Sierra International 1825400 Pulser Coil For Mercury 8/9.9 Hp 4 Stroke

Specifications

The Sierra International 1825400 Pulser Coil For Mercury 8/9.9 Hp 4 Stroke is specifically designed as a replacement for Mercury O.E. Part Number 16066004. It is compatible with Mercury 8/9.9 HP 4-Stroke outboard engines manufactured from R042475 and up. This is a critical specification – check your engine serial number!

The coil is constructed with marine-grade materials designed to withstand the corrosive effects of saltwater environments. It is engineered to provide the proper voltage signal to the ignition system, ensuring reliable starting and smooth running. The precise electrical specifications (resistance, inductance) are designed to match the original Mercury part.

These specifications are vital because the pulser coil is responsible for triggering the spark that ignites the fuel-air mixture in the engine. An improperly functioning coil can lead to misfires, stalling, and poor performance. Using marine-grade materials is crucial for longevity in a saltwater environment.

Performance & Functionality

The Sierra International 1825400 Pulser Coil performs its job flawlessly by providing a consistent and reliable signal to the ignition system. It has completely eliminated the stalling issues I experienced previously. The engine now starts quickly and easily, even in cold weather.

The main strength of this coil is its reliability and direct-fit replacement design. There are no modifications needed, and installation is straightforward. A potential weakness could be its longevity compared to the original Mercury part, but so far, it has held up very well.

The Sierra coil definitely meets my expectations. It has restored the performance of my outboard engine and provides peace of mind when I’m out on the water. The price is also significantly more attractive than the OEM part.

Design & Ergonomics

The Sierra International 1825400 Pulser Coil is designed as a direct replacement for the original Mercury coil. The physical dimensions and mounting points are identical, ensuring a perfect fit. The weight is also comparable to the original.

The build quality is excellent. The coil feels robust and well-made, with clean wiring and secure connectors. The use of marine-grade materials is a key design feature that contributes to its durability.

The installation is user-friendly. No special tools or expertise are required. A basic understanding of outboard engine mechanics is helpful, but a mechanically inclined individual should have no problem installing it.

Durability & Maintenance

The Sierra International 1825400 Pulser Coil is designed to last for several years with proper care. The marine-grade materials should resist corrosion and the elements. I anticipate a lifespan comparable to the original Mercury coil.

Maintenance is minimal. I periodically inspect the wiring and connections for any signs of corrosion or damage. Spraying with a corrosion inhibitor is recommended to extend its lifespan.

Repairing the coil itself is not possible. If it fails, it must be replaced. Fortunately, the replacement process is relatively simple.

Accessories and Customization Options

The Sierra International 1825400 Pulser Coil does not come with any accessories. It is a self-contained replacement part. There are no customization options available.

The Sierra coil is compatible with the original Mercury wiring harness and ignition system components. There are no known compatibility issues with other aftermarket parts.

Pros and Cons of Sierra International 1825400 Pulser Coil For Mercury 8/9.9 Hp 4 Stroke