Labwork Ignition Coil & Module – DR49 / D577

For Chevrolet & GMC 1995-2007 – 4.3L & 5.7L

Replace worn ignition components with a complete coil-and-module assembly designed for direct fitment on many Chevrolet and GMC vehicles equipped with 4.3L V6 and 5.7L V8 engines (model years 1995-2007).

Features

• Direct replacement for factory ignition coil and ignition module (plug-and-play)
• Designed to restore strong, consistent spark for improved starting, idle and throttle response
• Durable composite housing and corrosion-resistant terminals
• Engineered and tested for reliable electrical performance under normal operating conditions
• Includes both the ignition coil and the ignition module for a complete replacement

Applications / Fitment

Fits many Chevrolet and GMC vehicles equipped with 4.3L and 5.7L engines from model years 1995-2007. Common vehicle types include:

• Full-size trucks and pickups (Silverado, Sierra, C/K series)
• SUVs and large crossovers (Tahoe, Suburban, Yukon)
• Vans and utility vehicles (Express)
• Some mid-size SUVs and trucks that used the 4.3L V6

Important: Always verify part compatibility with your vehicle before purchase. Check your vehicle VIN, compare the old part(s) and connector style, or consult a parts specialist to confirm fitment.

Included in the Box

• 1 × Ignition Coil
• 1 × Ignition Module
  (installation hardware may be required depending on vehicle; hardware not always included)

Installation Notes

• Professional installation recommended if you are not experienced with ignition systems.
• Before beginning, disconnect the negative battery terminal to prevent electrical shorts.
• Inspect connector pins and wiring harness for damage; replace any corroded or frayed wiring.
• After installation, verify all electrical connections are secure and test engine operation.

Part Numbers

• Manufacturer reference: DR49 / D577
  (Use these reference numbers when checking fitment. Cross-reference with your OEM part number to ensure compatibility.)

Warranty & Support

Warranty and support policies vary by seller. Check the product listing or contact the seller/manufacturer for specific warranty terms and return policies.

Notes & Recommendations

• If you are experiencing misfires, hard starting, poor fuel economy, or a check engine light with ignition-related trouble codes, replacing the coil and module as a set is a common repair.
• Always compare the replacement unit to your original parts (shape, connector type, mounting points) before installation.

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