Review on ACDelco Professional 18M1878 Brake Master Cylinder Assembly: Efficient Solution for Superior Braking Performance by Marco Maurer

Even though I didn't fit the master cylinder due to the weather I don't expect any problems. The new master cylinder arrived promptly and was in a sealed plastic bag to prevent corrosion. I plan to cover it with a thin layer of paint to prevent corrosion. This is a new master, not a remodel. The price was great and free shipping at the time of ordering. Cheaper than auto parts stores and it was a new block while theirs was being remodeled. Highly recommended.