The do88 Performance Intercooler replaces the factory charge air cooler with an all-aluminium tube and fin core measuring 57mm thick. Core volume rises to 13,971 cm³ from the stock 7,320 cm³, a 91% increase, while active cooling area grows to 2,451 cm² from 913 cm², up 168%. Inlet and outlet connections step up from 45mm to 63mm (2.5"), a 95% larger cross section, and do88 measured 300 CFM against 226 CFM at a 0.175 bar (2.54 psi) pressure drop, 33% more flow, with post intercooler air temperature falling from 50°C to 25°C under the same conditions. The kit ships with two silicone adapter hoses that mate the original pipes to the 63mm connections, two air guide closures that block bypass around the core, spacers that move the bumper beam forward, and all mounting hardware. Some original plastic air guides need trimming during installation.
Specifications
| Type | Front mount charge air intercooler, tube and fin core |
| Core Thickness | 57mm |
| Core Volume | 13,971 cm³ (91% larger than OE 7,320 cm³) |
| Active Cooling Area | 2,451 cm² (168% larger than OE 913 cm²) |
| Connections | 63mm (2.5") inlet and outlet, versus 45mm OE |
| Airflow | 300 CFM at 0.175 bar pressure drop, versus 226 CFM OE |
| Charge Air Temperature | 25°C versus 50°C OE under the same test conditions |
| Material | Aluminium, CAD designed cast end tanks |
| Included | Two silicone adapter hoses, two air guide closures, bumper beam spacers, mounting hardware |
| Quantity | 1 |
| Part Number | ICM-390-S |
| OEM Replacement | 17940-18010 |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020 | Toyota | GR Yaris | All |
| 2021 | Toyota | GR Yaris | All |
| 2022 | Toyota | GR Yaris | All |
| 2023 | Toyota | GR Yaris | All |
| 2024 | Toyota | GR Yaris | All |
| 2025 | Toyota | GR Yaris | All |
| 2026 | Toyota | GR Yaris | All |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
