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Ignition Coil & Spark Plugs for Chevrolet Corvette C5 Z06 (1997-2004) 5.7L V8



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High-Output Ignition Coil & Spark Plugs for 1997-2004 Chevrolet Corvette C5 All Models

Direct Replacement Ignition Kit: Restores factory spark energy and resolves ignition misfires by replacing degraded OEM coils, wires, and spark plugs on the 5.7L V8.

The Stock C5 Corvette Ignition Weakness

The factory ignition coils on the C5 Corvette's LS1 and LS6 engines are notoriously vulnerable to extreme heat cycling. Mounted directly above the exhaust manifolds, the OEM coil epoxy and internal copper windings rapidly degrade over time. This thermal stress increases electrical resistance, resulting in weak spark energy during heavy engine loads. Furthermore, factory spark plug wire jackets become brittle and crack, leading to electrical arcing against the block. This cascade of failures causes P0300-series random misfire codes, rough idling, and significant horsepower loss.

The Engineering Solution

This complete ignition kit remedies C5 thermal vulnerabilities using advanced insulation and upgraded internal components. The coils feature high-purity copper windings and premium dielectric epoxy to stabilize voltage output during intense heat soak. This ensures a consistent transfer of high-voltage spark energy, completely eliminating high-RPM spark blowout. Combined with heavy-duty silicone spark plug wires that resist thermal cracking, the electrical path remains completely isolated. Together with fresh spark plugs, this system restores total combustion efficiency, delivering crisp throttle response and a smoother powerband.

Technical Specifications

Fitment 1997-2004 Chevrolet Corvette (Base & Z06)
Engine / Chassis LS1, LS6 / C5 (Y-Body)
Stock Output 345-405 hp / 350-400 lb-ft (Approx)
Part Number 12558948, 12556450, D580, UF192, 5C1078

Compatibility

  • 1997 Chevrolet Corvette 5.7L V8
  • 1998 Chevrolet Corvette 5.7L V8
  • 1999 Chevrolet Corvette 5.7L V8
  • 2000 Chevrolet Corvette 5.7L V8
  • 2001 Chevrolet Corvette 5.7L V8 (Base & Z06)
  • 2002 Chevrolet Corvette 5.7L V8 (Base & Z06)
  • 2003 Chevrolet Corvette 5.7L V8 (Base & Z06)
  • 2004 Chevrolet Corvette 5.7L V8 (Base & Z06)

The Chevrolet Performance Standard

Engineered for the demands of the American V8, this ignition set restores the aggressive power delivery and raw exhaust note the C5 Corvette is known for, providing consistent firing whether on the street or the track.


Engine Safety Rating
Difficulty 


Fitment

Make

Chevrolet

Engine Size

  • 5.7L

Year

  • 1997
  • 1998
  • 1999
  • 2000
  • 2001
  • 2002
  • 2003
  • 2004

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]

Ignition Coil & Spark Plugs for Chevrolet Corvette C5 Z06 (1997-2004) 5.7L V8

$239.95