Dorman 740-644 Cadillac/Chevrolet/GMC Front Driver Side Power Window Regulator

Why Are Dorman Window Regulators Better?

Dorman was one of the first companies to provide window regulators to the automotive aftermarket more than 15 years ago and we’ve since become experts at making these replacement parts effective and reliable.

Our engineers examine why window regulators from the original manufacturers fail and then find solutions for those failure-prone designs. When you see one of our parts with an OE FIX label that means we found a common problem with an original equipment maker’s design and implemented a creative solution to make the part more reliable or easier to install.

We also have advanced technological capabilities that allow us to integrate increasingly complex technologies into our motors including printed circuit integration and embedded software engineering.

And we test all of our regulators on actual doors from real-world car models running them through thousands of cycles examining everything from how long they hold up to how fast they go up and down. This is the expertise innovation and quality assurance you can expect from Dorman Window Regulators.