Ignition Coil + Spark Plugs for Subaru Legacy (2000-2003) 2.5L

OEM-Grade Ignition Coil Pack and NGK Spark Plug Kit for 2000-2003 Subaru Legacy (BE/BH)

What it Does: The ignition coil and NGK spark plug kit replaces worn factory ignition components on the 2000-2003 Subaru Legacy to eliminate misfires, stabilize rough idle, and restore proper combustion under heavy throttle load.

The Stock Subaru Legacy Ignition Breakdown

The factory central waste-spark coil pack mounted on the Subaru EJ251 engine is subject to continuous radiant engine bay heat. Over time, engine thermal cycling causes micro-fractures in the stock epoxy potting, leading to voltage leakage, internal secondary winding resistance spikes, and carbon tracking. Because the BE/BH waste-spark architecture fires two spark plugs simultaneously on both compression and exhaust strokes, coil duty cycle is effectively doubled compared to standard individual coil-on-plug setups. When insulation fails, the system yields weak spark energy, hesitation, and engine codes P0301 through P0304.

The Engineering Solution

This replacement ignition assembly features high-dielectric epoxy housing and premium copper primary and secondary windings engineered to withstand high underhood thermal stress. Coupled with included NGK G-Power (7092) fine-wire platinum spark plugs, this setup lowers ignition voltage demand while creating a robust flame kernel inside the combustion chamber. The corrosion-resistant electrode alloy prevents gap widening under load, providing consistent ignition timing, cleaner emissions, and optimal burn efficiency across all four cylinders.

Technical Specifications

Compatibility

• 2000-2003 Subaru Legacy Brighton 2.5L SOHC
• 2000-2003 Subaru Legacy L 2.5L SOHC (Sedan & Wagon)
• 2000-2003 Subaru Legacy GT 2.5L SOHC (Sedan & Wagon)
• 2000-2003 Subaru Legacy GT Limited 2.5L SOHC (Sedan)

Frequently Asked Questions

Does this fit the BE/BH Legacy?

Yes, this is a direct fit for the 2000-2003 Subaru Legacy equipped with the EJ251 engine.

Does this ignition kit include replacement spark plug wires?

No, this service kit includes one waste-spark coil pack and four NGK platinum plugs; ignition wires must be reused or sourced separately.

The Subaru Boxer Caliber

Subaru's horizontally opposed flat-four requires uniform cylinder balance and pinpoint ignition timing to maintain smooth power delivery and distinct exhaust pulses across all RPM bands.