For sale is a NOS MoPar choke diaphragm. Chrysler part number 4049240. This diaphragm is used on some 1970's "340" CI engines. This also may be super ceded by Chrysler part number 3621209 ( please see photos). Please verify engine / carburetor / diaphragm combinations. We strive to provide accurate information on our parts listings. This is a general guide. please verify our information, your specific requirements and compatibility of this part prior to purchase. We are a franchised Chrysler dealer that was in business for 76 years. We are now offering our vast inventory of NOS & current  MoPar parts, accessories and other things. Please visit our store, WagnersNOSparts, to see all the NOS MoPar parts, NOS GM & AMV / Jeep parts and other things we have for sale. Have questions? Please ask! Thank you.