WFLNHB Ignition Coil Assembly DR-49 with D577 Module – Direct-Fit Replacement for Chevy/GM, Sealed Plug-and-Play

The WFLNHB Ignition Coil DR-49 with Ignition Module D577 is a complete direct-fit ignition coil assembly designed to replace factory DR-49/D577 units on a wide range of GM vehicles, restoring reliable spark delivery.

If your Chevy or GM vehicle from the mid-1990s to the late 2000s is showing rough idle, misfires, or hard starting, swapping in this WFLNHB coil-and-module assembly is a fast way to get back to dependable performance without expensive dealer parts. This unit is manufactured to match the original shape and electrical connections for many makes and models, and ships sealed and ready to install. Below you'll find clear fitment details, useful installation notes, and what to expect from this replacement component.

Which GM models and years will this ignition coil fit?

This WFLNHB assembly covers an extensive list of GM vehicles from the mid-1990s through the 2000s. It is intended as a replacement for original DR-49 and related part numbers used across Chevy, Oldsmobile, Pontiac and Cadillac platforms.

• Chevy Astro, Blazer, S10: multiple years 1995–2005 depending on model
• Full-size trucks and vans: Silverado, C/K pickup lines, Express vans, Suburban — select years 1995–2007
• Specialty and luxury models: Camaro, Firebird, Bravada, Fleetwood, Escalade for listed model years
• Always verify the existing part number on your coil (see list below) before purchase

How does this replacement match original equipment and part numbers?

The assembly is designed to replicate the OEM electrical and mounting interfaces so installation is typically straightforward. It replaces a wide array of factory reference numbers used by GM and aftermarket suppliers.

• Replaces DR-49, C1098, 5C1062, LX381 and DR178
• Also compatible with numbers like 10489421, 8104894210, CE20003 and D577
• Cross-references include E208, 50007, 52-154 and R-444 for broader fit checks

What are the product features and what’s included in the package?

The unit ships as a single ignition coil with the integrated ignition module, pre-sealed to protect it during transit. The construction uses durable materials to resist heat and vibration encountered under the hood.

• One WFLNHB ignition coil with integrated D577 ignition module per package
• Manufactured from high-quality materials for extended service life
• Sealed packaging — arrives ready to install after simple checks
• Designed for plug-and-play replacement where DR-49/D577 style coils were originally used

How should I check fitment and install the coil assembly?

Before buying, compare the part number printed on your current coil and confirm the connector and mounting points match the WFLNHB unit. Installation typically requires common hand tools and basic mechanical experience.

• Inspect the existing coil for any stamped or printed part numbers and cross-reference with the list above
• Disconnect the battery, remove electrical connectors, unbolt the coil, and swap the unit in place
• Reconnect wiring and test for proper starting and idle; consult a service manual for torque specs and safety tips

Who is this for: The WFLNHB Ignition Coil DR-49 with D577 module is aimed at DIY mechanics, independent repair shops, and owners of Chevy/GM trucks, vans and cars from the 1995–2007 model years who need a reliable, cost-effective replacement for worn or failing ignition coils. If you prioritize direct-fit compatibility, straightforward installation, and an OE-style replacement part, this assembly provides a practical alternative to dealer-only components. Always confirm fitment by checking your vehicle’s year, model and existing coil part number before ordering.