Review on Mean Mug Auto Front Windshield Washer Nozzles Set of Two for Chevrolet, GMC, Pontiac, Hummer - Replaces OEM #: 15173510, 20820073 by Kenneth Broszko

Many reviews say that they do not fit. This is because these cars were made with two different incompatible part numbers depending on where they were made. Depending on which factory they came from, 2 otherwise identical 2007 Trailblazers could have different, incompatible washer fluid jets. This applies to the entire range of vehicles in which these nozzles are used. The easiest way to determine which nozzle you need is to use a small flathead screwdriver and pry up the existing washer nozzle slightly to see where its clips are. The clips are either front/back or side/side. Then you know which part to order. They fit perfectly as a replacement for my 2002 Trailblazer. I really like the adjustable nozzle.