The S58 cools through three frontal radiators, one large central unit and a smaller auxiliary radiator in front of each wheel, and the factory auxiliaries pair slim cores with plastic tanks that fall behind once the engine is tuned. do88 replaces both sides with a dual row 48mm core carrying 43 percent more core volume than the original and 13 percent more active cooling area, built in full aluminium with TIG welded end tanks and greater fluid capacity. Both radiators are drop-in on either side, supplied with CNC machined mounting brackets and OE style quick connect inlet and outlet fittings, and the factory rock guard reattaches for debris protection.
Specifications
| Type | Auxiliary performance radiator, dual row aluminium core |
| Position | Front left and front right, ahead of the wheels |
| Core | 2 row, 48mm thick |
| Core Volume | 43% larger than OE |
| Active Cooling Area | 13% larger than OE |
| Material | Aluminium with TIG welded end tanks |
| Included | 2 radiators, CNC machined mounting brackets, OE style quick connect fittings |
| Part Number | WC-440 |
| OEM Replacement | 17118095285 |
| Quantity | Pair (2 radiators) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2026 | BMW | M2 | S58 (G87) |
| 2020-2026 | BMW | M3 | S58 (G80) |
| 2020-2026 | BMW | M3 | Competition, CS (G80) |
| 2020-2026 | BMW | M4 | S58 (G82) |
| 2020-2026 | BMW | M4 | Competition, CSL (G82) |
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
