The S55 mounts its engine oil cooler horizontally under the centre cooling module, where the factory tube and fin core is exposed to stone chips and road debris, and a punctured cooler can end the engine. do88 3D-scanned the mounting area and designed a bar and plate replacement to fill it, a far more robust core structure in that position. Frontal surface area rises to 1185 cm2 against the original 984 cm2, a 20% increase, and core volume to 4503 cm3 against 2755 cm3, a 63% increase.
Specifications
| Type | Bar and plate engine oil cooler |
| Position | Front, horizontal, below the centre cooling module |
| Core Volume | 4503 cm3 (OE 2755 cm3, 63% larger) |
| Frontal Surface Area | 1185 cm2 (OE 984 cm2, 20% larger) |
| Construction | Bar and plate core replacing the OE tube and fin core, designed from a 3D scan of the mounting area |
| Quantity | 1 |
| OEM Replacement | 17212284540 |
| Part Number | OC-170 |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019 | BMW | M2 | Competition (F87) |
| 2020 | BMW | M2 | Competition (F87) |
| 2015 | BMW | M3 | M3 / M3 Competition (F80) |
| 2016 | BMW | M3 | M3 / M3 Competition (F80) |
| 2017 | BMW | M3 | M3 / M3 Competition (F80) |
| 2018 | BMW | M3 | M3 / M3 Competition (F80) |
| 2015 | BMW | M4 | M4 / Competition / GTS / CS (F82/F83) |
| 2016 | BMW | M4 | M4 / Competition / GTS / CS (F82/F83) |
| 2017 | BMW | M4 | M4 / Competition / GTS / CS (F82/F83) |
| 2018 | BMW | M4 | M4 / Competition / GTS / CS (F82/F83) |
| 2019 | BMW | M4 | M4 / Competition / GTS / CS (F82/F83) |
| 2020 | BMW | M4 | M4 / Competition / GTS / CS (F82/F83) |
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
