This is a used Gneiss Cold Air intake for 98 Accord V6 coupe/sedan. The tube diameter is 3". It comes with all hardware you need to mount the intake. Gain is around 8HP. Instant bolt-on power! You can also instantly take off the cold air extension to convert it to an in-engine intake filter if the weather condition does not permit the usage of the cold air extension

See here for the auction:!!
http://cgi.ebay.com/ebaymotors/ws/eB...tem=1828102274