The 2015 NASCAR K&N Pro Series West was the sixty-second season of the K&N Pro Series West. Beginning with the NAPA Auto Parts 150 at Kern County Raceway Park on March 28, the season ended on November 12 with the Casino Arizona 200 at Phoenix International Raceway . Two-time champion Greg Pursley did not defend his series title, as he retired at the end of the 2014 season. Chris Eggleston won the championship, seven points ahead of Noah Gragson.