Spark Plug Wire – Fits Mercury Marine 150-175-200HP (Replaces 813715A1, 90816A25, 93475A25)
Spark Plug Wire – Fits Mercury Marine 150-175-200HP (Replaces 813715A1, 90816A25, 93475A25) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Spark Plug Wire – Fits Mercury Marine 150-175-200HP (Replaces 81371...
Spark Plug Wire – Fits Mercury Marine 150-175-200HP (Replaces 813715A1, 90816A25, 93475A25) is backordered and will ship as soon as it is back in stock.
Product Details
This 9-inch Spark Plug Wire is designed for Mercury Marine 150–200 HP, 2-Stroke outboard engines, primarily fitting models from the 1970s through the 1990s. It provides a reliable, direct plug-in connection from the ignition coil to the spark plug, ensuring proper engine performance.
It serves as a direct interchange for Mercury part numbers 813715A1, 90816A25, 93475A25, and 99215A25, as well as aftermarket equivalents like Sierra 18-5228-1 and AquaPower A/P3026.
- Engineered for direct plug-in replacement.
- Features corrosion-resistant terminals for longevity in marine environments.
- Built with silicone jacketing and a durable core for RFI suppression.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number |
|---|---|
| Mercury Marine | 813715A1 |
| Mercury Marine | 90816A25 |
| Mercury Marine | 93475A25 |
| Mercury Marine | 99215A25 |
| Mercury Marine | 99215A29 |
| Sierra | 18-5228-1 |
| Sierra | 18-5227-1 |
| AquaPower | A/P3026 |
Engine & Model Compatibility
Confirm your engine model and year range in the table below to ensure accurate fitment.
This component is designed for specific Mercury Marine 2-stroke V-6 outboards.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | V-150 | 150 | 2-Stroke | 1976–1990s | 813715A1 | Models: 4868998-0A904645, 5600162-0A904645 |
| Mercury | V-150 Magnum | 150 | 2-Stroke | 1976–1990s | 813715A1 | Model: 5600162-0A904645 |
| Mercury | V-150 Marathon | 150 | 2-Stroke | 1976–1990s | 813715A1 | Model: 5600162-0A904645 |
| Mercury | V-150 Work | 150 | 2-Stroke | 1976–1990s | 813715A1 | Model: 4868998-0A904645 |
| Mercury | V-150-XR-2 | 150 | 2-Stroke | 1976–1990s | 813715A1 | Model: 4868998-0A904645 |
| Mercury | V-1500 | 150 | 2-Stroke | 1976–1990s | 813715A1 | Model: 4868998-0A904645 |
| Mercury | V-175 | 175 | 2-Stroke | 1976–1990s | 813715A1 | Models: 4301235-0C100860, 8058870-UP |
| Mercury | V-200 | 200 | 2-Stroke | 1976–1990s | 813715A1 | Model: 5239232-0C100860 |
Technical Specs
- Product Type
- Spark Plug Wire
- Installation
- Direct plug-in replacement
- Fuel Type
- Gasoline
- Connection
- Coil-to-spark plug
- Housing Material
- Silicone jacketing with Kevlar core
- Length
- 9" (228.6 mm) nominal; 9-1/2" (241.3 mm) end-to-end
- Core Construction
- Stainless steel wound conductor
- Features
- RFI suppression, corrosion-resistant terminals
- Warranty
- 1 Year
What’s in the Box
- 1 x Spark Plug Wire (Replaces 813715A1, 90816A25, 93475A25, 99215A25)
Installation Notes
- Ensure the engine is completely off, cool to the touch, and in neutral. Disconnect the negative battery terminal as a safety precaution.
- Gently twist and pull to remove the old spark plug wire from both the ignition coil and the spark plug. Avoid yanking the wire.
- Lightly apply dielectric grease to the inside of the new wire's boots to ensure a watertight seal and prevent corrosion.
- Firmly press the new wire's boots onto the ignition coil and spark plug until you feel them click into place.
- Reconnect the negative battery terminal, start the engine, and check for smooth operation.
Troubleshooting & FAQ
How can I confirm this wire fits my specific engine?
The best method is to match your engine's model number and year with the compatibility table. Also, compare your existing part number to those listed in the Part Number Matrix. If your part looks different, do not purchase.
What is the difference between the 9" and 9-1/2" length?
The wire is commonly listed by its nominal length of 9 inches. The 9-1/2 inch measurement is the total length from one end to the other, which is a more precise dimension for confirming fitment.
What are the signs of a bad spark plug wire?
Common symptoms include engine misfires, rough idling, reduced acceleration, poor fuel economy, and visible signs of wear on the wire itself, such as cracks, burns, or corrosion on the terminals.
What is the difference between OEM and aftermarket parts?
This listing is an aftermarket replacement, not a genuine OEM part. It is built to OEM-level specifications with comparable materials and performance. Our parts are manufactured in an ISO 9001 certified facility and are batch-inspected for quality and consistency.
How fast is shipping and what does it cost?
We ship worldwide quickly, with typical transit times of 5–15 days. Standard shipping is free for most orders. Expedited shipping options, if available for your location, will be presented at checkout.
doingWhat is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window, provided the item is unused and in its original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement component, not an OEM part.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or quality control.
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