2013-2015 Nissan Altima QR25DE 2.5L I4 Engine Spark Plugs Replacement Guide

The iridium tipped OEM spark plugs in a fifth generation (2013, 2014, 2015 and probably also the revamped 2016 model year) Nissan Altima sedan with the QR25DE 2.5 liter inline four cylinder motor should last up to 100,000 miles. But they should be checked well before that time to verify that the engine is running properly and to make sure they do not become stuck or “frozen” in the cylinder head. Take a look at my DIY instructions for the procedure (including the replacement part numbers) by clicking on the text link or thumbnail image below.

2013-2015 Nissan Altima 2.5L I4 Engine Spark Plugs Replacement Guide

2013-2015 Nissan Altima QR25DE 2.5L I4 Engine Spark Plugs Replacement Guide