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Koyo OEM Replacement Radiator Automatic Transmission (Part Number: )
Koyo OEM Replacement Radiator Automatic Transmission (Part Number: )
Koyo OEM Replacement Radiator Automatic Transmission (Part Number: )
Koyo OEM Replacement Radiator Automatic Transmission (Part Number: )
Koyo OEM Replacement Radiator Automatic Transmission (Part Number: )
Koyo OEM Replacement Radiator Automatic Transmission
Subaru WRX 2002
Read 5 Reviews | 2 Q&As
Part # KOY-A2450
msrp: $122.80

In stock! Ships same day

Features & Product Details

Koyo leads the radiator industry in quality, performance and fitment. Koyo engineers carefully design the radiators offering a true plug and play installation: No drilling, cutting, relocating, or stretching to get their radiators to fit properly.

These OEM Koyo replacement radiators feature plastic end tanks with a aluminum core, allowing for a cost effective option compared to the OEM units.

This radiator is meant for cars with the automatic transmission with the filler neck NOT on the radiator.

Early model WRX owners need to verify that their stock radiator has a radiator cap. WRX models without a radiator cap need the 2002 WRX radiator.


Brand: Koyo
Core Depth: 0.625 in
Core End Tank Material: Plastic
Core Height: 13.375 in
Core Width: 27.0625 in
Includes Radiator Cap: No
Mfgr. Warranty: 18 Months
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.



5 Reviews
4.6 out of 5 Stars
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
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lasted 4 years 2 years ago
3out of 5stars

I bought this radiator back in 2012 and unfortunately it arrived with shipping damage. Fortunately I was dealing with RSD and I had a new radiator almost before I had the damaged unit back in the box. During the last four years, I've had the radiator out of the a couple of times, earlier this week when i had it out to replace a leaking cam seal, I noticed that the petcock would not tighten back up. The plastic threads in the radiator are about gone. I'm done with plastic radiators, this one was number three not counting the one I sent back.
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Koyo radiator for Subaru WRX (automatic) 5 years ago
5out of 5stars

Arrived promptly without problems. Installed new radiator and am back in business. Service and product were both quite satisfactory.
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Amazing 7 years ago
5out of 5stars

Awesome, so glad I went with rally sport for this purchase, great radiator better price
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Replacement for Manual Transmission 7 years ago
5out of 5stars

I bought this to replace my rad in a stick shift. Fitment was exactly the same and the automatic lines did not interfere at all. Great product and great customer support.
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3 of 3 people found the following review helpful
Works great for 2002 WRX's - Both Automatic AND Manual Transmissions 8 years ago
5out of 5stars

I was in a pinch the other day. The Radiator in my 2002 5-Speed Manual WRX decided to randomly spring a leak. I searched for anyone that had one in stock. RSD to the Rescue! Apparently Koyo doesn't make a specific radiator for the 2002 5MT WRX. I guess you can do some rigging and get the 03-07 radiator to work, but that didn't look fun. So, I figured I'd take a chance and see if this one would work. I just left the lines at the bottom capped. Everything went awesome, lined right up, slid right in and bolted up.
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  • Q: Fans size?  Asev907232 months ago

    May I install bigger fans of 16” to this radiator?

This Part Fits

Subaru Impreza
2002 Subaru Impreza WRX