TechPro 50NI123 Ignition Coil

Ignition Coil for Nissan and INFINITI Applications

TechPro 50NI123 is an ignition coil for select Nissan, Suzuki, and INFINITI vehicles. It is built for direct replacement use on a wide range of V6 applications, including Nissan Frontier, Xterra, Pathfinder, Altima, Maxima, Murano, Quest, and related models.

• Ignition coil replacement for select Nissan and INFINITI vehicles
• Fits 2005-2014 Nissan Frontier, N/A
• Fits 2012-2014 Nissan NV1500, N/A
• Fits 2012-2014 Nissan NV2500, N/A
• Fits 2012-2014 Nissan NV3500, N/A
• Fits 2005-2014 Nissan Xterra, N/A
• Fits 2009-2012 Suzuki Equator, N/A
• Fits 2001-2010 Nissan Pathfinder, N/A
• Fits 2004-2009 Nissan Quest, N/A
• Fits 2002-2008 Nissan Maxima, N/A
• Fits 2003-2007 Nissan Murano, N/A
• Fits 2002-2006 Nissan Altima, N/A
• Fits 2002-2004 INFINITI I35, N/A
• Fits 2002-2003 INFINITI QX4, N/A

Detailed Fitment and Function

This TechPro ignition coil, part number 50NI123, is used to transform low-voltage electrical input into the high-voltage spark energy required by the ignition system. It is a fitment-based replacement for Nissan Frontier, Xterra, Pathfinder, Quest, Maxima, Murano, Altima, NV1500, NV2500, NV3500, Suzuki Equator, INFINITI I35, and INFINITI QX4 applications listed above. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part May Address

• Engine misfire codes
• Rough idle or hesitation
• Hard starting
• Loss of spark at one cylinder
• Reduced engine performance under load

Installation Notes

Verify the year, make, and model against the fitment list before ordering. Inspect spark plugs, connectors, and wiring during replacement, since worn ignition components can affect coil performance. Confirm the coil location and connector style on the vehicle before installation. Part number 50NI123 should be matched to the exact application shown for Nissan and INFINITI models.

Quality Assurance

TechPro ignition components are cataloged for direct-fit replacement applications and are selected for vehicle-specific compatibility across the listed Nissan, Suzuki, and INFINITI models.