Replaces 3221P1004 MERITOR-ROCKWELL RD20145 DIFFERENTIAL PART , MS

LKQ Heavy Truck is North America's largest commercial truck parts network, new and used. With millions of parts for all makes and models. We are always open to adding products you don't see, special orders, and we back everything up with the best service and warranties*.  Contact us with questions, concerns, suggestions and/or requests. Our loyalty is to you!

*Warranties apply to new and rebuilt items, unless otherwise specified within the listing*

OUR GOAL: Your Go-To eBay Store!

 At LKQ Heavy Truck Parts, we are committed to your satisfaction. We want you to be 100% satisfied with your order. If not, let us know how to earn your 5-star rating.

General Policies

 If you have any questions about a part, please contact us via eBay BEFORE purchasing the item. We will answer all questions as quickly as possible.

LKQ Heavy Truck Parts is proud to offer you the absolute best prices and fastest service for all your Heavy Truck Parts needs. In order to keep our prices low, we require all buyers to adhere to the following terms and conditions:

• Immediate payment required via eBay for “Buy It Now” purchases.
• Unfortunately, we do not ship to PO Boxes, or APO and FPO military addresses.
• Anything shipped Freight (LTL), has to be to a commercial address. 
• We cannot control your purchase to ensure that you stay within these guidelines. However, these aforementioned conditions are our necessary criteria for shipping. It is your responsibility to ensure that you meet these requirements, so please take a moment before purchasing our item(s) and make sure that you understand these guidelines. If you do not understand, please contact us.
• If a wrongful purchase is made, we will do anything we can to work with you to make the transaction go smoothly. 

Shipping

 Once you have placed your order by purchasing an item, it generally takes 1-2 business days to ready and ship items.

We cannot ship to PO Boxes!!! Before purchasing our item(s), please make sure that your eBay account has a confirmed physical address, or you personally supply us with a physical address to ship to.

Returns

 We offer a 30-day money back warranty on all of our new and rebuilt items! All of our products are new and are in unused condition unless the item is specifically otherwise listed, and all of our products will be properly listed via brand and manufacturer part number. It is your responsibility to ensure that you order the correct part number. Above all else, we desire 100% customer satisfaction, so please work with us if anything needs our attention. If you have any problems or questions, please do not hesitate to contact us via eBay.

Stock

 It is our desire to always have every listed item actively in stock. Occasionally due to high demand, short supply or human error, we may be momentarily out. If this happens you will be notified and given the option to either cancel for a full refund or wait for the part to come in (typically 3-14 days). If it is a used part, we may have alternatives and the ability to pull from 1 of our many locations. 

Contacting Us

We take pride in having the best customer service! If you have any comments or questions about listed items, shipping, handling time, parts you would like to see listed or absolutely anything at all, please feel free to message us. We will get back to you as soon as we are able.