Walker 921-2105 Ignition Coil

Walker ThunderSpark Ignition Coil 921-2105

Walker ThunderSpark ignition coil 921-2105 is a direct-fit ignition coil for select Cadillac, Buick, and related applications. It is listed for 2007-2011 Buick Lucerne, 2007-2011 Cadillac DTS, 2007-2010 Cadillac STS, 2007-2009 Cadillac SRX, and 2007-2009 Cadillac XLR.

Key Features

• Ignition coil for select GM luxury vehicles
• Walker ThunderSpark product line
• Part number 921-2105 for accurate ordering and lookup
• Fits 2007-2011 Buick Lucerne, N/A
• Fits 2007-2011 Cadillac DTS, N/A
• Fits 2007-2010 Cadillac STS, N/A
• Fits 2007-2009 Cadillac SRX, N/A
• Fits 2007-2009 Cadillac XLR, N/A

Detailed Description

Walker ThunderSpark 921-2105 is an ignition coil built for the listed Buick and Cadillac applications. The ThunderSpark line identifies Walker ignition components for vehicle-specific service needs, and this coil is cataloged for the exact model-year coverage shown above. Use part number 921-2105 when verifying fitment for a 2007-2011 Buick Lucerne or a 2007-2011 Cadillac DTS, as well as the other listed Cadillac models.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Engine misfire conditions
• Rough idle
• Hard starting
• Loss of spark output at one cylinder
• Check engine light related to ignition performance

Installation Notes and Tips

Confirm the vehicle year, make, and model before ordering. Match the existing coil connector style and mounting location to the original part, and inspect spark plugs and related ignition components during service. For fitment verification, compare the application to the listed coverage for 2007-2011 Buick Lucerne, 2007-2011 Cadillac DTS, 2007-2010 Cadillac STS, 2007-2009 Cadillac SRX, and 2007-2009 Cadillac XLR.

Quality Assurance

Walker ThunderSpark parts are cataloged for specific vehicle applications to support accurate replacement selection. Part number 921-2105 is listed for the fitments shown above.