These fit my 2007 RAM 1500 V6 3.7L engine just fine. One thing to note, all the spark plugs came pregapped at exactly 0.035. After looking at my engine compartment decal, my engine calls for a gap of 0.040 (which is odd because online RAM says it should be 0.044).
https://www.amazon.com/DENSO-PLATINUM-Spark-Plugs-PK16TT/dp/B00S3GUW1U