Radiator replacement for a 2004 AT Sedan
Joined: Mar 2009
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From: By the sea, Tx
G35 sedan w/ too much money in mods
The back and forth in this thread is one of the things I love about this forum. To all who posted helpful information here many thanks. With all of the new, immature members joining us in droves you all give me hope that Driver will remain the premiere G forum on the internet. 
Si driver,
Thanks, I have replace the coolant 3 or 4 times before and removing all the air pockets is no easy task like you said. More questions: Does the fan need to be removed to take out the radiator? I'm assuming I need to remove the steering wheel belt (big belt) first before removing the fan? Also, I searched and someone posted it is easier to remove the radiator from underneath/bottom (easier) rather than pulling it out from top? thx!
Thanks, I have replace the coolant 3 or 4 times before and removing all the air pockets is no easy task like you said. More questions: Does the fan need to be removed to take out the radiator? I'm assuming I need to remove the steering wheel belt (big belt) first before removing the fan? Also, I searched and someone posted it is easier to remove the radiator from underneath/bottom (easier) rather than pulling it out from top? thx!
On my 03 with fan clutch I did not have to remove the fan, but as you mentioned, I dropped the old rad out from underneath. The fan and ac condenser made it too much of a PITA to take out from the top.
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Joined: Dec 2006
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I'm updating this thread to provide some info. Hopefully, it would help someone looking to do a radiator replacement. When I was searching for which aftermarket radiators to get, lots of the threads I came across had fitting issues/not an exact fit as the OEM radiator.
Base on the feedback here, I bought the TYC 2455 radiator for my 04 AT sedan. It took me pretty much, 7 hrs to remove/replace the radiator, drained/refilled coolant and cleaned up the mess that I made (first time doing it, hence the looooong 7 hrs). The last step of separating the radiator from the condenser to remove was surely a PITA due to the extremely tight fitment. I also replaced the thermostat that I got from a local dealer for $30.
If you have an 04 AT sedan (with a single clutch fan) built date before 10/2003, the TYC 2455 is an exact fit (no mod needed). You can find the built date of your car at the driver side's door jam. Call up your local Infiniti dealer, give them your car's VIN# and they can look up the Nissan part# for you. When I called them up, they told me there are 2 part# for the radiator for the 2004 AT sedan. Hence, he asked for the VIN# in order to tell which part# to fit. For my car, the Nissan part# is 21460-AQ800. This is the cross part# for the TYC 2455.
Thanks to Si_driver (steered me to the TYC) and those who replied to my thread, you guys have been a great help!
Base on the feedback here, I bought the TYC 2455 radiator for my 04 AT sedan. It took me pretty much, 7 hrs to remove/replace the radiator, drained/refilled coolant and cleaned up the mess that I made (first time doing it, hence the looooong 7 hrs). The last step of separating the radiator from the condenser to remove was surely a PITA due to the extremely tight fitment. I also replaced the thermostat that I got from a local dealer for $30.
If you have an 04 AT sedan (with a single clutch fan) built date before 10/2003, the TYC 2455 is an exact fit (no mod needed). You can find the built date of your car at the driver side's door jam. Call up your local Infiniti dealer, give them your car's VIN# and they can look up the Nissan part# for you. When I called them up, they told me there are 2 part# for the radiator for the 2004 AT sedan. Hence, he asked for the VIN# in order to tell which part# to fit. For my car, the Nissan part# is 21460-AQ800. This is the cross part# for the TYC 2455.
Thanks to Si_driver (steered me to the TYC) and those who replied to my thread, you guys have been a great help!
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Joined: Jul 2005
Posts: 206
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From: Baltimore
good to hear that all worked out for you. I don't remember taking anymore than 3 hours for the replacement. But it did take me about 1 hours to get all the air out.
BTW, now over 100,000 miles on that radiator and no leaks or other problems.
BTW, now over 100,000 miles on that radiator and no leaks or other problems.
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