949 SuperMiata Crossflow Radiator 1990-2005 - basically new
949 SuperMiata Crossflow Radiator 1990-2005 - basically new
Basically new - bought this a few months ago, ran three sessions at RA, then decided I wanted the extra headroom of the thicker (and much more expensive) TSE radiator. Includes the accessory pack, unopened (didn’t see it in the box originally and reused my old hardware).
Paid $390 shipped originally; asking $340 shipped. I don’t know that I’ve ever seen one of these come up for sale used; rare chance to buy one $50 off.
From 949:
Fits 89-05 Except Mazdaspeed
Our most efficient radiator
Why crossflow?
The Crossflow utilizes a side to side coolant flow pattern. The OEM and most aftermarket radiators have a downflow top and bottom tank configuration. The primary advantage of a crossflow is the longer transverse coolant path allows more time to shed heat. Placing the filler on the low pressure side also prevents the cap from releasing pressure prematurely as it can in traditional top/bottm tank designs. The core also features carefully optimzed fin density and thickness to allow the maximum cooling in the most compact and lightweight radiator. This lightweight 31mm core will cool more efficiently than the Koyo 55mm we also offer.
Features
Starting with a clean sheet of paper, we were able to include the features of the best radiators on the market and add a few of our own.
-Two drain plugs. Each drain plug is a common 10x1.5 bolt with a simple o-ring. Lose a plug? 10 minutes at your local auto parts or hardware store and you are back in business.
-High flow fill neck. Nothing more anoying that bleeding a cooling system that has a tiny filler neck that requires a funnel and slo-mo filling.
-High pressure 1.4 bar (20psi), high temp cap. The standard cap with our radiator will allow your system to operate at 25% higher system pressure. That raises the boiling point even further. The seal is high temp silicone, not rubber that will crack and leak.
-B tube core. The B tube is actually two tubes in one. The B tube has a septum, or divider that runs down the center of each tube. This increases the surface area and help to equalize the wall pressures inside the tube to further optimizing cooling efficiency. Our core is one continuous tube, not two cores sandwiched like you might see in other large capacity cores. This means maximum surface area with minimal external size/weight.
-High fin density. Our core is 19.5 fpi, or fins per inch. Our testing has shown that 18-21 fpi is the sweet spot given the airflow, temp deltas and water pressure of Miata system.
-Compact 6.5mm fin height increase coolant to core contact area
-Convertible. Our radiator will fit any year 89-05 MX5 Miata with included hardware.
-Light weight design. 7.8 lbs, the lightest aftermarket aluminum radiator available
Why replace the stock radiator?
When old and ready to crack, the plastic turns a brownish color. If yours is light brown to almost yellow, it's a time bomb. We recommend replacing the OEM radiator before going to the track.
Suitable for any power output from stock to the most heavily taxed 300whp turbo track Miatas running factory A/C.
Pair with our Coolant Reroute kit for the maximum cooling efficiency in your Miata.
Drain plugs and radiator cap included
Paid $390 shipped originally; asking $340 shipped. I don’t know that I’ve ever seen one of these come up for sale used; rare chance to buy one $50 off.
From 949:
Fits 89-05 Except Mazdaspeed
Our most efficient radiator
Why crossflow?
The Crossflow utilizes a side to side coolant flow pattern. The OEM and most aftermarket radiators have a downflow top and bottom tank configuration. The primary advantage of a crossflow is the longer transverse coolant path allows more time to shed heat. Placing the filler on the low pressure side also prevents the cap from releasing pressure prematurely as it can in traditional top/bottm tank designs. The core also features carefully optimzed fin density and thickness to allow the maximum cooling in the most compact and lightweight radiator. This lightweight 31mm core will cool more efficiently than the Koyo 55mm we also offer.
Features
Starting with a clean sheet of paper, we were able to include the features of the best radiators on the market and add a few of our own.
-Two drain plugs. Each drain plug is a common 10x1.5 bolt with a simple o-ring. Lose a plug? 10 minutes at your local auto parts or hardware store and you are back in business.
-High flow fill neck. Nothing more anoying that bleeding a cooling system that has a tiny filler neck that requires a funnel and slo-mo filling.
-High pressure 1.4 bar (20psi), high temp cap. The standard cap with our radiator will allow your system to operate at 25% higher system pressure. That raises the boiling point even further. The seal is high temp silicone, not rubber that will crack and leak.
-B tube core. The B tube is actually two tubes in one. The B tube has a septum, or divider that runs down the center of each tube. This increases the surface area and help to equalize the wall pressures inside the tube to further optimizing cooling efficiency. Our core is one continuous tube, not two cores sandwiched like you might see in other large capacity cores. This means maximum surface area with minimal external size/weight.
-High fin density. Our core is 19.5 fpi, or fins per inch. Our testing has shown that 18-21 fpi is the sweet spot given the airflow, temp deltas and water pressure of Miata system.
-Compact 6.5mm fin height increase coolant to core contact area
-Convertible. Our radiator will fit any year 89-05 MX5 Miata with included hardware.
-Light weight design. 7.8 lbs, the lightest aftermarket aluminum radiator available
Why replace the stock radiator?
When old and ready to crack, the plastic turns a brownish color. If yours is light brown to almost yellow, it's a time bomb. We recommend replacing the OEM radiator before going to the track.
Suitable for any power output from stock to the most heavily taxed 300whp turbo track Miatas running factory A/C.
Pair with our Coolant Reroute kit for the maximum cooling efficiency in your Miata.
Drain plugs and radiator cap included
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Joined: Sep 2005
Posts: 34,402
Total Cats: 7,523
From: Chicago. (The less-murder part.)
This is a good radiator. Light as a feather, and yet built like a tank. Possibly the best unit available which fits with the stock fans.
I bought one about a year ago, while driving a poorly-maintained NB with no undertray in stop-n-go traffic through the swamps of North Carolina, with the air conditioner running full-tilt boogie. Calm and cool.
I bought one about a year ago, while driving a poorly-maintained NB with no undertray in stop-n-go traffic through the swamps of North Carolina, with the air conditioner running full-tilt boogie. Calm and cool.
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Senior Member
Joined: Jul 2016
Posts: 557
Total Cats: 54
From: San Diego
That's something new to me, why would it be in the radiator filled with special mixture that is MUCH less likely to leave deposits/calcify? Plus you are supposed to flush the system from time to time and never fill it with regular tap water.
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