Genuine GM Converter & Pipe Seal 20987829

Parkway OEM parts is a division of Parkway Chevrolet in Tomball, TX. so we are familiar with the needs of our online shoppers. Our parts specialists have decades of experience in helping customers find the right part for their Buick, Cadillac, Chevrolet, GMC, Hummer, Oldsmobile, Pontiac, or Saturn. If you have a special project and cannot find the part you are looking for, or just general questions, send us an email so that we can assist you further.

We supply genuine OEM parts and accessories for your GM car, truck or SUV. Genuine parts and accessories are manufacturer recommended and keep your vehicle in peak running condition. We sell only original current production OE GM Parts. Parts and prices listed on our site are based off GM pricing. We can sell this low only because of our volume of parts sales. All parts sold on our web site will have the same GM warranty as parts sold at any GM dealer nationwide.

We also ship anywhere in the United States, and will send it right

Thank you for shopping with us. Please find our policies below.

If you have any other questions, please don't hesitate to contact us.

• In stock orders ship within 24 hours.
• Orders placed after 12:00pm on Fridays, Saturdays, or Sundays will not be processed until the following business day.
• High-value items are usually sent with signature-delivery requirements.
• Depending upon location, ground shipments usually take 2-7 days.
• (LTL 1) If your item is very large or over 150lbs (EX: Hoods, Doors, Engines) the item will ship via LTL Freight (18-wheeler). Please use a business address, if possible, when ordering these types of parts.
• (LTL 2) A valid phone number must be provided for LTL Freight shipments. The carrier will call you before delivery to ensure someone will be present to sign for the package.
• (LTL 3) Please thoroughly inspect all products within an LTL shipment before signing for the package. If any items are damaged, either refuse the delivery or make sure to write "damaged in transit" on the driver's paperwork before signing.