This replacement window regulator is precision-engineered and extensively tested to match the exact fit, function and performance of the stock window regulator on specific vehicle years, makes and models.

Heavy Duty Manual Window Regulator (Regulator Only) 740-5503 Features:

• Fits 1989-2007 Mack MR; 2008-2019 Mack MRU
• Trustworthy replacement — engineered and tested to match the fit, function and performance of the original window regulator on specified vehicles
• Quality assured — extensively tested by cycling thousands of times in an actual vehicle door to ensure a long, trouble-free service life
• Reliable design — engineered in the USA and backed by long history of automotive aftermarket experience
• Easy installation — reverse-engineered to match the original equipment shape and dimensions to provide a direct, seamless fit