Mystery Solved: Rear Wheel Cylinders 65-69 vs. 70-75

Using the casting numbers to identify wheel cylinders can be problematic. Sometimes the manufacturers use the same castings to make several wheel cylinders. The cylinder housing may have a different bore or the brake line fitting could be a different size but the casting number would be the same. To be sure to get the right part, you need the actual part number. Look at this link for the wheel cylinder you need. NOS NIB Wagner Wheel Cylinder FD34876/FD49333 | eBay