Walker 921-2023 Ignition Coil

Walker ThunderSpark Ignition Coil

Walker ThunderSpark 921-2023 is an ignition coil for select Nissan, INFINITI, and Suzuki applications. It is listed for a wide range of Frontier, Xterra, Pathfinder, Maxima, Murano, Altima, Quest, NV van, and Equator models, making it a direct-fit option for common ignition service jobs.

The ThunderSpark line is Walker’s ignition-focused product line for replacement coil applications. This part number, 921-2023, is cataloged for multiple Nissan V6 platforms and related INFINITI and Suzuki models, including vehicles that require boot and spring-specific fitment notes.

Key Features

• Walker ThunderSpark ignition coil for select Nissan, INFINITI, and Suzuki vehicles
• Direct replacement for ignition coil service on 2002-2021 applications
• Fitment includes Nissan Frontier, Xterra, Pathfinder, Maxima, Murano, Altima, Quest, and NV series vans
• Also listed for INFINITI I35 and QX4, plus Suzuki Equator
• Part number 921-2023 for catalog and service identification

Detailed Description

Walker 921-2023 is an ignition coil built for vehicles across the ThunderSpark application range, including 2005-2019 Nissan Frontier, 2005-2015 Nissan Xterra, 2002-2012 Nissan Pathfinder, 2002-2008 Nissan Maxima, 2003-2007 Nissan Murano, 2002-2006 Nissan Altima, 2004-2009 Nissan Quest, 2012-2019 Nissan NV2500, 2012-2019 Nissan NV3500, 2012-2016 Nissan NV1500, 2017-2018 Nissan NV1500, 2019 Nissan NV1500, 2020 Nissan Frontier, 2020-2021 Nissan NV1500, 2020-2021 Nissan NV2500, 2020-2021 Nissan NV3500, 2009-2012 Suzuki Equator, 2002-2004 INFINITI I35, and 2002-2003 INFINITI QX4. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Engine misfire caused by a weak or failing ignition coil
• Rough idle during cold start or at operating temperature
• Hard starting related to inconsistent spark output
• Loss of power under acceleration
• Check engine light conditions tied to ignition coil faults

Installation Notes and Tips

Verify the year, make, model, and fitment notes before ordering, especially for Nissan NV1500, NV2500, and NV3500 applications where boot and spring notes vary by year. Compare the original coil connector, mounting style, and engine configuration to the existing part before installation. For best results, inspect spark plugs and related ignition components during service, since worn plugs can place added load on the coil.

Quality Assurance

Walker ThunderSpark is the identified product line for this ignition coil, and part number 921-2023 is cataloged for direct replacement use across the listed applications.