Ignition Coil Harness – Fits Volvo Penta 3.0L 4.3L 5.0L 5.7L 7.4L V6 V8 (Replaces 3854084, 3850279)

Product Details

This Ignition Coil Harness is engineered for Volvo Penta marine sterndrive engines including 3.0L (181 CID), 4.3L V6 (262 CID), 5.0L and 5.7L small-block V8, and 7.4L / 8.2L big-block V8 models. Designed to provide reliable spark distribution from the ignition coil to the distributor in demanding marine environments.

This harness directly replaces Volvo Penta part numbers 3854084 and 3850279, delivering OEM-equivalent connectivity and durability.

• Direct plug-and-play replacement for factory harness
• Compatible with Volvo Penta V6 and V8 gasoline marine engines
• Marine-grade construction resists moisture and vibration

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Part Type

Ignition Coil Harness / Distributor Lead

Application

Volvo Penta Marine Sterndrive Engines

Engine Displacement

3.0L, 4.3L, 5.0L, 5.7L, 7.4L, 8.2L

Configuration

V6 & V8 Gasoline

Replaces OEM

3854084, 3850279

What's in the Box

• 1 × Ignition Coil Harness

Installation Notes

1. Disconnect the battery negative terminal before beginning work.
2. Locate the ignition coil and distributor on your Volvo Penta engine.
3. Remove the old harness by carefully disconnecting both ends—note routing and orientation.
4. Inspect the coil and distributor terminals for corrosion or damage; clean if necessary.
5. Route the new harness along the same path as the original, avoiding sharp edges and heat sources.
6. Connect the harness terminals to the ignition coil and distributor, ensuring a snug fit.
7. Secure the harness with factory clips or ties to prevent chafing.
8. Reconnect the battery and verify the engine starts and runs smoothly.

Troubleshooting & FAQ

How do I know if my ignition coil harness is failing?

Common symptoms include intermittent misfires, rough idling, difficulty starting, or engine stalling. If you notice these issues along with visible damage to the wire insulation or corrosion at the terminals, replacement is recommended.

Will this fit both my 5.0L and 5.7L Volvo Penta engines?

Yes. This harness is compatible with both small-block V8 (5.0L and 5.7L) and big-block (7.4L and 8.2L) Volvo Penta marine engines, as well as the 3.0L and 4.3L V6 models.

Can I install this harness myself?

Installation is straightforward for users familiar with basic marine engine maintenance. Disconnect the battery, remove the old harness, route the new one identically, and reconnect. If you're unsure, professional installation is recommended.

What is the difference between this harness and the OEM version?

This is an aftermarket replacement built to OEM-level specifications using comparable materials. It provides the same electrical connectivity and durability as the factory part, at a more competitive price point.

Is the harness compatible with earlier or later model years?

This harness fits Volvo Penta 3.0L, 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L sterndrive engines that originally used part numbers 3854084 or 3850279. Confirm your engine's part number before ordering.

How often should the ignition coil harness be replaced?

Replace the harness when you observe physical damage, cracks in the insulation, corrosion at connectors, or ignition-related performance issues. Routine inspection during annual service is recommended.

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 against 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.