When you go to buy anything online you have to make sure you choose a reputable site and one that has a return policy, just in case the goods you buy are not right. You will need to look for signs that your chosen online store is safe and secure with the payment pages encrypting your payment details. Look for the URL starting https; the s on the end means it is secure. Another way to tell is the padlock symbol on the bottom right of the page. And don't forget to read all the terms and conditions first.
You probably wonder why there is a need to look for washing machine spare parts. It is easier to simply entrust concerns with repair men and centers. Not all repair personnel and shops have the parts you need though. Some may offer to shop for you. Yet some will have you look for parts yourself.