Been a couple years on new GKN rear axles on my 300TE. No issues. Seem high quality when compared to factory that I took off after 170k. Solved a clicking noise that I only heard on the dyno for emissions test.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k