The factory duct between the air filter and the turbo necks down to 56mm internal diameter and carries a resonator section, both of which choke air flow. do88 replaces it with a 76mm (3 inch) outside diameter mandrel bent seamless aluminium pipe that stays full size throughout, flowing 655 CFM at 0.15 bar (2.18 psi) pressure drop against 594 CFM for the OEM pipe on do88's SuperFlow SF-1020 bench. Two custom silicone hoses with four layers of polyester reinforcement and steel wire resist heat and vacuum collapse, and four T-bolt clamps plus mounting hardware are included.
Specifications
| Type | Bolt-on turbo inlet pipe kit |
| Material | Mandrel bent seamless aluminium pipe with 4-layer polyester and steel wire reinforced silicone hoses |
| Pipe Diameter | 76mm (3 inch) outside diameter, versus 56mm at the narrowest OEM section |
| Air Flow | 655 CFM at 0.15 bar (2.18 psi) pressure drop, versus 594 CFM OEM |
| Hose Color | Black |
| Included | Aluminium turbo inlet pipe, two silicone hoses, four T-bolt hose clamps, installation hardware |
| Quantity | 1 |
| Part Number | IR-140-S |
| OEM Replacement | 31338736, 30680345, 31319775 |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013-2015 | Volvo | V40, V40 Cross Country | T5 petrol turbo (5-cylinder) |
| 2011-2016 | Volvo | S60, V60, V60 Cross Country | T5 petrol turbo (5-cylinder) |
| 2008-2016 | Volvo | V70, XC70 | 2.5T, 2.5FT, T5 petrol turbo (5-cylinder) |
| 2007-2014 | Volvo | S80 | 2.5T, 2.5FT petrol turbo (5-cylinder) |
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
