Comes with pipes, seals, clamps, and most important the heater core! Hopefully you don\'t need to replace the pipes, but the heater core is fairly easy all things considered. The nissen one definitely has some larger vanes/passages over the OEM which may lead to less likely hood of clogging in the future. Only time will tell!

Never used. Will not mate up with existing tubing. If you want to change the core with the tubing I am sure it would work. But to just change the core buy the OEM