Product review (1 stars): Do not use the coupler with metal reinforcement
<a data-hook="product-link-linked" class="a-link-normal" href="/Whirlpool-Washer-Motor-Coupling-285753A/dp/B00064NX68/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Whirlpool Washer Motor Coupling # 285753A</a>The original coupler come with the washer do not have a metal insert, it is because the plastic coupler is made to wear out and that is to protect the motor shaft and the transmission shaft. If the metal reinforcement coupler is used, the motor shaft or transmission shaft will wear out. This is a simple engineering design to protect the more expensive parts.