Finding a replacement radiator was not easy, I had two suppliers send the the wrong part despite having warned about the similarity of the VTEC radiator to the non-VTEC.

The first difference between the two radiators is that the cap on the non-VTEC radiator mounts directly on the top tank and on the VTEC one it is set back on an extended neck. The second less obvious difference is the size of the pipe connections, below is a table comparing the two. Either radiator will fit in any car but you will be unable to connect it up.

Year	1989-1991	1990-1991
Engine Code	D16Ax	B16A
Engine Size	1590cc	1595cc
Chassis Codes
Hose Connection	28mm	32mm
Core Thickness	16mm	16mm
Core Width	690mm	690mm
Core Height	315mm	315mm

The non-VTEC radiator is used in Civic/CRX's with D series engines no matter if they are SOHC or DOHC (1.6-16v, 1.5x, GL etc). The VTEC radiator will only fit cars with a VTEC engine.

I managed to get one from a supplier of Nissens radiators -  http://www.nissens.dk their online catalogue shows the correct radiator but is

Description	Radiator
Compatibility
Honda Part Number	19010-PW0-014
Nissens Part Number	63301
Nissens Product Number	325750

This radiator is not remanufactured and 100% new (unlike most which are new core on old end tanks), although you do pay a premium.

The fans bolt up perfectly and you are supplied with clips, although I chose to use the original Honda ones as they are stainless steel.

The design of the top and bottom tanks is slightly different to the original part. It looks like Nissens have altered an existing mould and there is an extra fan mount on the lower tank.