Spark Plug Wire – Fits Mercury Marine 150-200 HP (Replaces 84-813715A1)
Spark Plug Wire – Fits Mercury Marine 150-200 HP (Replaces 84-813715A1) is backordered and will ship as soon as it is back in stock.
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Spark Plug Wire – Fits Mercury Marine 150-200 HP (Replaces 84-81371...
Spark Plug Wire – Fits Mercury Marine 150-200 HP (Replaces 84-813715A1) is backordered and will ship as soon as it is back in stock.
Product Details
This 9-inch Marine Spark Plug Wire – Fits Mercury Marine 150-175-200 HP Outboards (Replaces 84-813715A1) is specifically designed for Mercury Marine V6 2-stroke outboard engines, including 150, 175, and 200 HP models produced from the 1970s through the 1990s. It provides a durable and reliable solution for restoring ignition system performance and efficiency.
It serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 84-813715A1, Sierra 18-5228-1, and AquaPower A/P3026, ensuring broad compatibility.
- Engineered for direct plug-in installation from the ignition coil to the spark plug.
- Features corrosion-resistant terminals and a Kevlar-reinforced silicone jacket for longevity in marine environments.
- Integrated RFI suppression protects onboard electronics from ignition interference.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury Marine | 84-813715A1 |
| 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/year in the table below.
For Mercury Marine engines, this part fits various V6 models. Verify your engine's serial number range against the notes in the table to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | V-150 | 150 | 2-Stroke | 1976–1990s | 84-813715A1 | Models: 4868998-0A904645, 5600162-0A904645 |
| Mercury | V-150 Magnum | 150 | 2-Stroke | 1976–1990s | 84-813715A1 | Model: 5600162-0A904645 |
| Mercury | V-150 Marathon | 150 | 2-Stroke | 1976–1990s | 84-813715A1 | Model: 5600162-0A904645 |
| Mercury | V-150 Work | 150 | 2-Stroke | 1976–1990s | 84-813715A1 | Model: 4868998-0A904645 |
| Mercury | V-150-XR-2 | 150 | 2-Stroke | 1976–1990s | 84-813715A1 | Model: 4868998-0A904645 |
| Mercury | V-1500 | 150 | 2-Stroke | 1976–1990s | 84-813715A1 | Model: 4868998-0A904645 |
| Mercury | V-175 | 175 | 2-Stroke | 1976–1990s | 84-813715A1 | Models: 4301235-0C100860, 8058870-UP |
| Mercury | V-200 | 200 | 2-Stroke | 1976–1990s | 84-813715A1 | 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
- Dimensions
- 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 (aftermarket); 90 days (OEM)
What’s in the Box
- 1 x Spark Plug Wire (84-813715A1)
Installation Notes
- Disconnect the battery terminals to prevent electrical hazards.
- Carefully grip the old spark plug wire boot and twist to loosen it from the spark plug. Pull the wire straight off.
- Disconnect the other end of the wire from the ignition coil, noting its position.
- Inspect the spark plug and ignition coil terminals for corrosion or damage. Clean as needed.
- Apply a small amount of dielectric grease to the inside of both boots on the new wire to seal out moisture and ease future removal.
- Firmly press the new wire's boots onto the spark plug and ignition coil until you feel or hear them click into place.
- Reconnect the battery terminals.
- Start the engine to confirm proper operation.
Troubleshooting & FAQ
How do I know if this wire is the right length for my engine?
This wire has a nominal length of 9 inches and an end-to-end length of 9.5 inches. Always compare the length of your original wire to this measurement. Slight variations are often acceptable, but a wire that is too short will not reach and one that is too long can be difficult to route safely.
What are the signs of a failing spark plug wire?
Common symptoms include rough idling, engine misfires (especially under load), decreased fuel efficiency, and visible signs of wear on the wire itself, such as cracks, burns, or corrosion on the terminals.
Is this a single wire or a complete set?
This listing is for a single 9-inch spark plug wire. V6 engines require multiple wires; check your service manual for the total number and specific lengths required for a complete replacement.
What is RFI suppression and why does it matter?
Radio Frequency Interference (RFI) suppression prevents the high voltage in the ignition system from creating electromagnetic noise. This noise can interfere with your boat's radio, GPS, fishfinder, and other sensitive electronics. This wire is designed to suppress RFI effectively.
Can I use this on a 4-stroke engine?
No, this particular wire is designed specifically for the 2-stroke Mercury Marine V6 engines listed in the compatibility table. Using it on an incompatible engine may result in poor performance or damage.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- 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 QC.
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