Ignition Coil + Spark Plugs for Cadillac Eldorado Seville (1993-1996) 4.6L

Direct-Fit Ignition Coil and Spark Plug Tune-Up Kit for 1993-1996 Cadillac Eldorado, Seville (E-Body / K-Body)

What it Does: The complete ignition kit replaces degraded factory secondary ignition components on the 1993-1996 Cadillac Eldorado and Seville to eliminate cylinder misfires, smooth out idle, and restore original combustion efficiency.

The Stock Cadillac Eldorado, Seville Secondary Ignition Failure

The early 32-valve Northstar L37 / LD8 engine relies on a dual-tower, waste-spark ignition pack setup mounted above high-temperature engine bay zones. Over time, prolonged heat soak degrades the factory coil epoxy insulation, causing internal winding shorts and micro-arcing. Paired with aged spark plugs suffering from electrode erosion and widened gaps, this degradation causes severe misfires under load, increased hydrocarbon emissions, carbon tracking, and an unrefined, rough idle characteristic of failing E-Body and K-Body ignition modules.

The Engineering Solution

This replacement kit resolves voltage drop and spark leakage by pairing four heavy-duty waste-spark ignition coils with eight factory-grade ACDelco spark plugs. The coils are engineered with high-dielectric epoxy potting and precision-wound copper secondary windings to resist thermal cycling and prevent arc-through. Matched to correct heat range plugs, this kit delivers consistent high-energy spark across all eight cylinders, ensuring complete fuel burn and stable flame kernel propagation under wide-open throttle.

What's Included

• 4 Ignition Coils (Waste-Spark Dual-Tower Design)
• 8 ACDelco Spark Plugs

Technical Specifications

Compatibility

• 1993-1996 Cadillac Eldorado 4.6L
• 1993-1996 Cadillac Seville 4.6L

Frequently Asked Questions & Fitment Warnings

Does this fit the E-Body / K-Body Eldorado, Seville?

Yes, this is a direct fit for the 1993-1996 Cadillac Eldorado and Seville equipped with the 4.6L Northstar V8 engine. This package is specifically engineered for dual-tower waste-spark configurations and does not fit 1992 or earlier 4.9L pushrod V8 applications.

Are spark plug wires included with this kit?

No, secondary spark plug wires are not included with this kit and must be purchased or inspected separately to ensure full ignition system integrity.

The Cadillac Luxury Standard

Cadillac's high-output Northstar platform demands exact electrical tolerances to retain smooth executive cruising and aggressive DOHC acceleration. This direct-replacement ignition hardware ensures factory-level cold starts, pristine throttle linearity, and uncompromised highway performance.