7" Spark Plug Wire – Fits Mercury Marine 150-200 HP Outboard Motors (Replaces 84-813715A1)

7" Spark Plug Wire – Fits Mercury Marine 150-200 HP Outboard Motors (Replaces 84-813715A1)

This 7-inch spark plug ignition wire is designed for Mercury Marine 150-200 HP V6 outboard motors manufactured between 1970 and 1988, including engines from the V-150, V-175, and V-200 series. It ensures a reliable electrical connection between the ignition coil or distributor and the spark plug for consistent engine performance.

Direct replacements include Mercury 84-813715A1, Sierra 18-8819, Mercury 90816A25, Mercury 93475A25, Mercury 99215A25, and Mercury 99215A29.

• Includes one 7-inch spark plug wire
• Suitable for 2-stroke Mercury outboard engines
• Installation is a direct replacement

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, heres a guide to help you identify your engines serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 x 7" Spark Plug Wire (84-813715A1/90816A25/93475A25/99215A25/99215A29)

Installation Guide

1. Turn off the engine and disconnect the battery to ensure safety.
2. Locate the old spark plug wire connected between the ignition coil/distributor and the spark plug.
3. Carefully remove the boot ends from both the coil/distributor and the spark plug without damaging surrounding components.
4. Compare the new wire length and connector types to ensure correct fitment.
5. Attach the new spark plug wire terminal end to the ignition coil or distributor securely.
6. Connect the boot end firmly onto the spark plug until it snaps in place.
7. Double-check all connections for a snug and secure fit.
8. Reconnect the battery and start the engine to test for proper ignition function.
9. Inspect for any signs of loose connections or misfires during engine operation.

Troubleshooting & FAQ

How do I confirm this fits my engine? Confirm your engine model and year against the compatible models listed in the table above.

What are the differences compared to OEM parts? This is an aftermarket replacement made to meet OEM specifications using similar materials but is not an OEM component.

How often should I replace the spark plug wire? Replacement intervals vary by use and environment, but inspect regularly for wear, cracking, or ignition issues and replace as needed.

What are common signs of spark plug wire failure? Engine misfires, difficulty starting, rough idling, or loss of power may indicate worn or damaged spark plug wires.

OEM vs. Aftermarket? This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost? We offer fast global shipping 95typically 5 96 15 days worldwide 94and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy? This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist 94even if your model is listed 94do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5 96 15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.