Nice!

Poor coolant quality is not the problem that causes all the OEM radiator failures on the 1st Gen Ridgeline; it is the design of the transmission pre-heater built-into the bottom of those radiators and the manufacturer's use of dissimilar metals with the fittings that create premature corrosion. Hopefully your inexpensive radiator does not have the same design flow.

 

Not what I meant. I mean in general, pinholes, etc. I can smell coolant and see some green. I have had aluminum rads / plastic end tanks fail the same way. The new rad has the upgraded type connectors. Same as the old one so it is not the original.

Also a couple bucks cheaper on eBay:

Radiator for 2005-2007 Honda Accord 2006-2008 Ridgeline 2.4L 3.5L V6 | eBay

Honda Ridgeline 2006 - 2008 All Trim Levels N/A. 1 RK1134 Radiator. Radiator Cap No. Type Radiator. New Radiator. Radiator cap not included. Radiators are essential in keeping your engine cool and removing excess heat that accumulates when the engine burns fuel.

www.ebay.com

Original Amazon link:

Amazon.com: AutoShack RK1134 30.3in. Complete Radiator Replacement for 2005-2007 Honda Accord 2006-2008 Ridgeline 2.4L 3.5L: Automotive

Buy AutoShack RK1134 30.3in. Complete Radiator Replacement for 2005-2007 Honda Accord 2006-2008 Ridgeline 2.4L 3.5L: Radiators - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

 

Here are most of the related Radiator and Transmission threads if you haven't found them all.

Happy Reading & Good luck

Radiator Failure @ Cooler Lines

Best Radiator Replacement

Pictures of Corroded/Rusted Radiator Fittings

Radiator Fail on 2006

UOA on ATF

Anatomy of OEM Denso Radiator

Poll(Never Posted) on Radiator/Trans Cooler Solution

Recent Radiator/Transmission SMOD!!!

Radiator comparison: Denso/Spectra/OSC

Catastrophic transmission/radiator fitting failure

Just turned 200000 miles and oh no,....

 

I would use Honda coolant which is premixed so blue rather than green and no worries about distilled water. . .
I also personally wouldn't put an aftermarket radiator in without having it pressure tested first.
SMOD might kill your transmission. A major radiator failure that leads to overheating might kill your engine.

 

Does the new rad have the same number of rows/tubes, or more than OE? Does it have the same, or more, fins per inch? The green stuff, Prestone, (10yr/300K miles) is available premixed or concentrate.

 

Not sure what the OE radiator has, but this has 76 rows, 18 fins per inch.

It already has green coolant in there, and I'll stick with that and flush every few years.

 

Nice GN, btw.

 

After getting various pieces of crushed and perforated as well as just plain wrong parts from Rocky and Bullwinkle Auto I switched to Amazon for my large expensive parts. More careful shipping and faster, cheaper delivery as well as improved accuracy were my reasons. YOU DO have to be more careful to select the correct parts yourself but they do arrive intact.