SKP SK5S1522 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Nissan and Infiniti

Restore accurate coolant temperature readings with this SKP engine coolant temperature sensor, part number SK5S1522. It is a direct-fit replacement for a wide range of Nissan and INFINITI applications, including Nissan Frontier, Pathfinder, Maxima, Altima, Xterra, and INFINITI G35, FX35, and Q45 models.

Key Features

• Engine coolant temperature sensor for OE-style temperature signal input
• Direct replacement for select Nissan and INFINITI vehicles
• Cross-references Beck/Arnley 158-0606, Standard Ignition TX78, and T Series TX78T
• Fits many 1994-2012 Nissan and INFINITI applications
• Also listed for Mercury Villager 2-terminal and 2-blade terminal applications

Detailed Description

The SKP SK5S1522 engine coolant temperature sensor monitors coolant temperature and sends that information to the engine management system. Accurate temperature input is important for fuel delivery, idle quality, cold-start behavior, and cooling system operation. This sensor is listed for a broad range of Nissan and INFINITI vehicles, including 2003-2006 Nissan 350Z, 2005-2006 Nissan Altima, 2007-2011 Nissan Titan, 2004-2011 INFINITI QX56, and 2003-2007 INFINITI FX35 and FX45. It also fits select Nissan GT-R, Murano, Rogue, Sentra, Versa, and Xterra applications.

This part cross-references Beck/Arnley 158-0606 and Standard Ignition TX78 for the same application.

What It Is Used For

• Correcting inaccurate coolant temperature readings
• Addressing hard starting when the engine is cold
• Resolving rough idle caused by incorrect temperature input
• Supporting proper fuel mixture control
• Helping eliminate temperature-related warning or drivability concerns

Installation Notes and Tips

Verify the connector style and engine application before installation. Fitment includes multiple Nissan and INFINITI platforms, with some listings noting special configurations such as Federal Emissions, on-cylinder-head mounting, or terminal-style differences. Compare the original sensor location and connector to the vehicle-specific listing before ordering. For best results, inspect the cooling system and wiring connector for corrosion or damage during replacement.

Quality Assurance

SKP replacement parts are built for direct-fit service on the listed applications. Confirm fitment by year, make, model, and notes for your vehicle before installation.