Hi Marcus, thank you for reaching out. We are unable to answer your question accurately due to a lack of information. Please call our parts team at 1-866-529-0412 and tell us more about your vehicle. Have a nice day.

Hi Chuck, I'm glad to assist you. No. It is sold separately. I hope this helps, and if you're interested in this fuel tank, you can click on the link below for direct ordering to take advantage of our ongoing sale and limited stocks. Happy shopping. https://www.carparts.com/fuel-tank/key-parts/fitgm23c?can=CPAE1047_CSQA_20220808

Hi Jimmie, I'm happy to assist you. This part is incompatible with the chosen vehicle. We suggest that you get the fuel tank for the 1969 Buick Electra 225 convertible from the local auto parts store. For more maintenance parts, we have a sale on brake parts. To get one for your vehicle, click this link: https://www.carparts.com/search?q=brake I hope this helps. Enjoy shopping at Carparts.com!

Hi Jon, Should you need further assistance to look for parts, feel free to call us at 1-866-529-0412.

Hi Oscar, You missed mentioning what type of 3500, is it 2WD or 4WD (C/K)? To check for availability and correct fitment, please follow the guidelines - On the Homepage, please enter (complete) your vehicle’s year, make, model, sub-model, and engine type, and type the part's name in the search box. Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page.