Let's face it, the factory RX-8 Air Separator Tank or AST being made of plastic leaves a bit to be desired. They have become brittle with age which often causes the cap to snap off or the tank to split causing leaks. This can empty the RX-8's cooling system very quickly causing overheating and potentially serious engine damage.


Our new unit is a direct bolt in replacement for the OE plastic unit and is compatible with completely stock (as shown) or with modified vehicles as well. During the design process we eliminated the annoying issue of the OE unit which allows coolant to overflow down and corrode the electric power steering system and fan connectors. These units are hand made here in the US and include a new radiator cap with a safer flip up style pressure relief.


To better suit your specific application and goals these are available with several additional options as well.


V-1 The basic model is a high quality tig welded replacement. This unit does not include a level sensor however by simply leaving the OE connector unplugged the dash light will remain off.


V-2 This model is the same as V-1 but includes a coolant level sensor providing normal dash light operation.


V-3 This model includes the level sensor and is ideal for those looking to reduce engine temperatures. It includes our cooling fan control kit built-in which will significantly reduce the operating temperature of your RX-8!


V-4 This model incorporates our cooling fan control kit as well as a coolant level sensor and also includes an additional tig welded bung. This is to allow the addition of a aftermarket coolant temperature or coolant pressure sensor to the cooling system! No more splicing into heater hoses!


Here is a link to the Air Separator Tank on our website.



Installed pic's:

 

Looking good, Scott. Can't wait to see it in person. I think this will help dress up the engine bay as well

 

Glad to see a option other than the factory plastic piece that gets brittle and can't remove factory coolant hoses.

 

Thanks Chris! I agree, I think it adds a nice touch while eliminating a known failure point that renders the car inoperative.




For those of you that have already purchased a unit from us, thank you, we appreciate your business and support!

These are in stock guys, ready to be configured to suit your application and shipped!

 

Hi Guys! We just finished another run of our Air Separator Tanks! Keep in mind these are not prone to the coolant level sensor issues of the OE unit! In stock and ready to configure for the options you prefer and ship!

 

Hi Guys,

We have just finished up another build run of these so they are in stock and ready to ship!

Feel free to purchase them through the website or email us directly:

Sales@RX8Performance.com

 

Just finished up another build run of these guys, summer is upon us don't wait for the OE plastic unit to fail and create more costly issues! If you pick V-3 (the most popular version) you will also significantly reduce your engine operating temps!

Let me know if you have any questions, thanks, Scott

 

You got any of these bad boys in stock? I'm just waiting on my tax return and I'd love to pick one up once the cheque comes in. If not, what's the lead time, and you're still shipping to Canada, right?

 

Hello bwilk,

Your timing is quite good as we just finished a build run of these and there are a few left not yet spoken for!

Which version are you interested in?

Yes, we still ship to Canada and the rest of the world as well!

 

Thank you Bwilk, email and order received! Thank you, Scott

 

Part received. I sent you an email re: some shipping weirdness. I also wrote a review after installing and a few drive cycles. You can read it here:
RX8Performance Air Separator Tank

 

This is the one from Pettit Racing that I have in my RX8 . Is this the same part folks?

AST Spec. A Kit RX8

 

Similar but not the same. The RX8Performance unit is a different shape.

 

Now that I actually looked at the Pettit offering, it's designed with the overflow nozzle on the same side as the RX8Performance offering. That and it's specifically said in the description here that the nozzle is pointed the way it is for a reason. I'm sure I read that at one point, but it's been a while since I actually looked at it, so I didn't put it together when writing my review

 

Hi guys

Thought i would try to get in touch with someone from RX8 Performance on here as my emails are being ignored
I would really appreciate some sort of contact considering I have purchased an AST from your website 3 weeks ago

 

Hi Rotorboy!


Please send an email to sales@RX8Performance.com so I can check your order for you!


Thank you, Scott

 

I ordered one also online about 2 weeks ago, no shipment, no communication. I have emailed and no responses...only thing holding up a car getting finished as I'm installing a rebuild and don't wanna have to break open the coolant system again just to do this.

 

did you hear from them?

 

No sure who the email was sent to but the AST was delivered.

 

Are you still offering these ?

 

Yes we are and we just finished a build run actually. I just checked and there are a few units still currently available .

 

great product!

beers

 

Just ordered the CFCK - Sensor tank. Hopefully you guys still got some left.

 

let us know when you hit bottom

 

How long is the current wait time to get one of these shipped out? Would like to get my car up and running ASAP. Thank you