Walker 921-2174 Ignition Coil

Ignition Coil for Mazda 3 and Mazda 5

Walker ThunderSpark ignition coil Part Number 921-2174 is a direct-fit ignition coil for select Mazda applications. It is listed for 2010-2013 Mazda 3 and 2008-2010, 2012-2014, and 2015 Mazda 5 models, giving you a fitment-specific replacement for common ignition misfire repairs.

Key Features

• Ignition coil replacement for select Mazda 3 and Mazda 5 applications
• Walker ThunderSpark product line
• Part Number 921-2174 for accurate catalog matching
• Fits 2010-2013 Mazda 3, N/A
• Fits 2008-2010 Mazda 5, N/A
• Fits 2012-2014 Mazda 5, N/A
• Fits 2015 Mazda 5, N/A, Single Coil

Product Details

The Walker ThunderSpark line focuses on ignition components for vehicle-specific replacement needs. This ignition coil is cataloged for Mazda 3 and Mazda 5 fitments across the listed model years, making Part Number 921-2174 a practical match when replacing a failed coil on the correct engine application. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Engine misfire diagnosis tied to a weak or failed ignition coil
• Rough idle caused by inconsistent spark delivery
• Hard starting related to ignition output loss
• Check engine light conditions associated with coil failure codes
• Loss of acceleration or hesitation under load

Installation Notes

Verify the year, make, model, and notes before ordering, since this part is listed for specific Mazda 3 and Mazda 5 configurations. Confirm connector style, mounting location, and engine application against the original coil before installation. Use the vehicle service procedure for coil removal and spark plug inspection, and replace worn plugs if diagnosis points to ignition wear.

Quality Assurance

Walker ThunderSpark parts are cataloged for application-specific ignition service, and Part Number 921-2174 is listed against defined Mazda fitments for accurate replacement selection.