Check the listing for details. GM Chevy Muncie 4 speed transmission side cover gasket M20 M21 M22. Condition: New. Listed at 3.95 USD. Check out my Store for many other early hot rod and transmission parts, new & used. I am always adding items, so stop in from time to time. GM Muncie transmission side cover gasket. I also carry the heavy duty scissor spring on a different auction. "If your gonna rebuild it, rebuild it right!" I always combine shipping and will utilize flat rate box's when it makes sense. To combine shipping on your purchases, you must put all items wanted in your shopping cart then hit "request total".( you can not combine shipping on a mobile device) This is located to the left of "go to checkout" and to the right of "seller name". I will then send you a revised invoice to pay off of. WAIT FOR THE REVISED INVIOCE IF YOU EXPECT COMBINED SHIPPING!! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.