If the drive block wears out the washers agitator will not work properly and may also make be noisy during operation. To access this part remove the agitator cap and remove the agitator mounting bolt. The old block will lift off of the transmission shaft once the agitator and bolt are removed.
No harm in buying and trying. Electrical parts? Out of stock parts? No problem. Get a free replacement or your money back if you return a part within one full year. This is the best return policy in the industry. (Shipping not included).