9" Spark Plug Wire Lead – Fits Johnson/Evinrude OMC V4-V6 Engines (Replaces 582365)
9" Spark Plug Wire Lead – Fits Johnson/Evinrude OMC V4-V6 Engines (Replaces 582365) 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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9" Spark Plug Wire Lead – Fits Johnson/Evinrude OMC V4-V6 Engi...
9" Spark Plug Wire Lead – Fits Johnson/Evinrude OMC V4-V6 Engines (Replaces 582365) is backordered and will ship as soon as it is back in stock.
Product Details
This high-performance 9" Spark Plug Wire Lead is engineered for a precise fit on most Johnson, Evinrude, and OMC 10–235 HP V4-V6 outboard engines. Featuring a Kevlar core, stainless steel wound conductor, and a durable silicone jacket, it ensures reliable ignition and superior RFI suppression for optimal engine performance.
It serves as a direct cross-reference for multiple OEM and aftermarket parts, including Johnson/Evinrude/OMC 582365, Sierra 18-5231, and Mallory 9-28005.
- Direct Replacement: Installs without modification, matching OEM form and function.
- Superior Durability: Kevlar core with a silicone jacket and boots provides excellent heat resistance and longevity.
- Enhanced Performance: Stainless steel wound conductor delivers maximum voltage with superior RFI suppression.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude/OMC | 582365 |
| Johnson/Evinrude/OMC | 582134 |
| Johnson/Evinrude/OMC | 582135 |
| Johnson/Evinrude/OMC | 777703 |
| Johnson/Evinrude/OMC | 802466 |
| Johnson/Evinrude/OMC | 802505 |
| Sierra | 18-5231 |
| Sierra | 18-5231-1 |
| Mallory | 9-28005 |
| Mallory | 9-28006 |
| Redline | RL5231 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This wire is compatible with a wide range of Johnson and Evinrude V4 and V6 engines. Since specific year ranges are not available, please verify fitment by matching your existing part number to the references in the Part Number Matrix.
Technical Specs
- Product Type
- Spark Plug Wire Lead
- Installation
- Direct Replacement
- Core Type
- Kevlar
- Conductor
- Stainless Steel Wound
- Jacket Material
- Silicone
- Boot Material
- Silicone
- Terminal Material
- Stainless Steel
- Length
- 228.6 mm (9 inches)
- Wire Diameter
- 6.35 mm (0.25 inches)
- RFI Suppression
- Yes, Superior
- Warranty
- Limited Lifetime (Sierra)
What’s in the Box
- 1 x 9" Spark Plug Ignition Coil Wire (582365/18-5231-1)
Installation Notes
- Safety First: Disconnect the battery and ensure the engine is cool before beginning work.
- Locate and Remove Old Wire: Identify the spark plug wire to be replaced. Firmly grip the boot (not the wire) and twist gently to pull it from both the spark plug and the ignition coil/distributor.
- Compare Wires: Lay the new wire next to the old one to confirm the length and boot angles match.
- Apply Dielectric Grease: Apply a small amount of dielectric grease to the inside of each boot to prevent corrosion and ease future removal.
- Install New Wire: Push the boots firmly onto the spark plug and the coil/distributor terminal until you feel them click into place. A secure connection is critical.
- Secure and Test: Route the wire correctly, away from hot or sharp engine components. Reconnect the battery and start the engine to test for proper function.
Troubleshooting & FAQ
Is this the correct wire for my specific engine model year?
This wire fits a broad range of Johnson/Evinrude V4-V6 engines. The most reliable way to confirm fitment is to match your original part number with the numbers provided in our Part Number Matrix. If your part number is listed, this wire is a compatible replacement.
What are the signs of a failing spark plug wire?
Common symptoms include rough idling, engine misfires (especially under load), decreased fuel economy, trouble starting the engine, and visible damage like cracks, burns, or corrosion on the wire or boots.
How often should spark plug wires be replaced?
While there's no fixed interval, it's good practice to inspect them during regular tune-ups and replace them if you notice any signs of wear or performance degradation. Marine environments are harsh, so inspection is key.
What is the difference between this and the OEM wire?
This wire is designed to meet or exceed original equipment manufacturer (OEM) specifications for fit, form, and function. It uses comparable high-quality materials like a Kevlar core and silicone jacketing to ensure performance and durability at a better value.
Can I cut this wire to a shorter length?
No. This wire is a specific length (9 inches) and has factory-terminated ends. Cutting it would damage the conductor and prevent a secure connection, leading to engine performance issues.
What does RFI suppression do?
Radio Frequency Interference (RFI) suppression prevents the spark energy from creating electromagnetic noise that can interfere with your boat's electronics, including fish finders, GPS, and stereo systems. This wire provides superior RFI suppression.
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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