The original number was XN-12Y. That is a Champion number. This is no longer a current number, although they do show up on eBay once in a while. There are folks who specialize in NOS old spark plugs, so if you want the exactly right plug, you'll need to deal with them. Otherwise, just use the Autolite 65, it is the recommended modern equivalent. Dick Benjamin -----Original Message----- From: mailing-list-owner@xxxxxxxxxxxxxxxx [mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of Weggen@xxxxxxxxxxx Sent: Saturday, October 23, 2004 3:15 AM To: mailing-list@xxxxxxxxxxxxxxxx Subject: IML: Spark Plugs for a 1956 Chrysler Imperial Hi there, i need to know, which Spark Plugs i need for my 2 56´Chrysler Imperials (C73). Hope someone can help me... Greetings from Germany Lars ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm