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}
Brand: MishimotoSKU / Part #: MISMMRAD-STI-08X
- Regular price
- $409.95
- Regular price
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$451.00 - Sale price
- $409.95
- Unit price
- per
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Overview
This Mishimoto performance aluminum radiator is a direct-fit upgrade for 2005-2021 Subaru applications covering Forester XT, Impreza WRX, Impreza WRX STI, Legacy, Legacy GT. It replaces the weak points of the stock part with stronger materials and better flow or cooling so heat, boost and abuse stay under control on street and track duty. AutoTalent lists verified US-market fitment in the table below.
Why upgrade
Whether you’re logging miles on your daily commute or chasing lap times at the track, keeping your Subaru’s flat-four cool is key to reliability and performance. The factory radiator’s limited capacity can quickly become a bottleneck under demanding conditions, putting your engine at risk of overheating and costly damage. Mishimoto engineers these kits around real chassis packaging, so hoses, coolers and adapters line up without fabrication on the listed years. Follow the published torque specs and install guide, reuse sensors where instructed, and confirm clearances if you run other supporting mods. Every unit ships with the Mishimoto Lifetime Warranty for as long as you own it.
Features
- Direct fit for the 2008-2014 Subaru WRX/2008-2021 STI
- Premium radiator has 3-row (2” thick) core for improved strength and reliability
- 16% thinner-than-stock tubes allow for more surface contact, increasing cooling efficiency
- Greater density of rows for higher cooling capacity
- More contact points for additional heat transfer
- 3-row design creates more air turbulence, maximizing cooling efficiency
- Now includes two 1.3 bar high-pressure caps, raising the boiling point of engine coolant to provide a safer, more efficient system
What's Included
- (1) Mishimoto Radiator
- (1) Mishimoto Two-Way Radiator Cap
- (1) Mishimoto One-Way Radiator Cap
- (2) Overflow Ports
- (1) Magnetic Drain Plug
- Fan Mounting Hardware
- Mishimoto Lifetime Warranty
Specifications
| Part number | MMRAD-STI-08X |
| Brand | Mishimoto |
| Type | radiator |
| Engine codes | EJ255 |
| Chassis codes | GE |
| Shipping dimensions | 31.6 x 23.3 x 6.9 in (80.3 x 59.2 x 17.5 cm) |
| Shipping weight | 16.2 lb (7.3 kg) |
Fitment Notes
Verified against Mishimoto US applications and dealer listing for 2005-2021 (11 rows). Years extended to 2027 where the US model remains in production.
Vehicle Fitment
| Year | Make | Model | Chassis | Engine |
|---|---|---|---|---|
| 2009-2013 | Subaru | Forester XT | SUB-US | — |
| 2008-2014 | Subaru | Impreza WRX | SUB-US | — |
| 2008-2014 | Subaru | Impreza WRX STI | SUB-US | — |
| 2005-2009 | Subaru | Legacy | SUB-US | — |
| 2005-2006 | Subaru | Legacy GT | SUB-US | — |
| 2005-2009 | Subaru | Outback XT | SUB-US | — |
| 2015-2021 | Subaru | WRX STI | VB | — |
| 2016 | Subaru | WRX STI HyperBlue | VB | — |
| 2015 | Subaru | WRX STI Launch | VB | — |
| 2019 | Subaru | WRX STI S209 | VB | — |
| 2018 | Subaru | WRX STI Type | VB | — |
Fitment
| Year | Make | Model |
|---|
Not sure? Text us your VIN and we’ll confirm.
Shipping & returns
Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.
Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.
Not returnable: special-order or custom items, and anything that has been installed, modified or altered.
Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.
Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.
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