Highest Quality Restoration Vacuum Advance Fits 6 Cylinder Applications If your1949, 1950, 1951 or 1952 Chevy just doesn't get the performance you expect from your original6 cylinder enginemaybe the vacuum advance is bad! The original vacuum advance has a rubber internal diaphragm that can dry rot and crack after 50 plusyears of use. A defective vacuum advance will prevent the timing from advancing properly and will cause sluggish throttle response. This brand new vacuum advance from Eckler's Early Chevy includes a new inner diaphragm good for another 50 years! Pep up your classic's performance with one of our new vacuum advances. Our vacuum advance fits 1949, 1950, 1951 and1952 Chevrolet FleetlinesandStylelines with 6 cylinder engines.
