DR39 Ignition Coils Iridium Spark Plugs Wires For Chevy Impala Buick 99 09

Product Overview

The DR39 ignition kit combines high-output ignition coils, iridium spark plugs, and EMI-suppressed spark plug wires into one complete package for the 1999–2009 Chevrolet Impala and compatible Buick sedans. This set restores factory ignition performance, addresses misfires, and helps improve fuel economy on high-mileage 3.8L V6 engines. Designed for do-it-yourself mechanics and professional shops, the DR39 kit delivers reliable, OEM-spec spark delivery without the dealer price.

Key Features & Performance

• Complete ignition set: three ignition coils, six pre-gapped iridium spark plugs, and six low-resistance spark plug wires
• Iridium center electrodes provide high melting point, superior wear resistance, and consistent spark over extended intervals
• Coils feature high-temperature epoxy vacuum encapsulation to resist moisture, vibration, and thermal stress
• Wires use a spiral-wound suppression core for stable spark energy and reduced radio frequency interference
• 100% burn-tested coils ensure consistent primary/secondary resistance and reliable start-up
• Drop-in fit with factory connectors, boots, and mounting points — no modifications required

Fitment & Compatibility

• 1999–2009 Chevrolet Impala (3.8L V6)
• Buick models equipped with the 3.8L V6 engine — confirm engine code L36 or L67

Common Uses

• Scheduled ignition system maintenance on high-mileage Impala/Buick sedans
• Fixing rough idle, hesitation, and persistent misfire codes (P0300–P0306)
• Restoring factory fuel economy and throttle response after worn-out plugs
• Complete tune-up during intake manifold gasket or engine service

Technical Specifications

• Part Number(s): DR39
• Coil Type: Delphi-style ignition coil pack, 3-coil set
• Spark Plug Material: Iridium fine-wire center electrode
• Plug Wire Construction: EPDM silicone jacket, spiral-wound suppression core
• Engine Compatibility: GM 3.8L V6 (vin codes K, 1) 1999–2009

Frequently Asked Questions

Q: Are the spark plugs pre-gapped? A: Yes, the iridium plugs arrive pre-gapped to the factory specification for the 3.8L V6; always double-check the gap with a feeler gauge before installation.

Q: Do the coils need any calibration or programming after installation? A: No, the DR39 coils are passive inductive coils that function as a direct plug-and-play replacement — simply install and the ECU will recognize them without reprogramming.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.