If you are looking for a billet replacement for BMW coolant connector 11118619408, start with the part number and engine generation. The MAXQ connector covered here is for compatible F2X/F3X Gen 1 B58 applications. It is available on its own; you do not need to buy a full cooling kit.
Which BMWs is this connector for?
The current MAXQ product listing covers 2016–2019 140i, 240i, 340i and 440i applications across F20, F21, F22, F23, F30, F31, F32, F33 and F36 chassis. Model names and years alone are not enough to confirm a match: verify the original part number before ordering.
- Engine generation: Gen 1 B58 only.
- Replacement reference: BMW 11118619408.
- Quantity: one billet connector.
This is not a universal B58 fitting. Do not use this listing as confirmation of fitment for a B48, a later-generation B58, a G30 or a Supra. Those applications need their own product and part-number check.
What changes with the billet version?
The MAXQ version replaces the original plastic connector with CNC-machined 6061 aluminum and an anodized finish. The useful comparison is the actual connector: its construction, connection points and compatibility with the application you are working on.
Watch the original and MAXQ connectors in Vehicle Virals’ F30 340i build. MAXQ supplied products for this build.
Connector, hose repair kit or full kit?
Start with the diagnosed repair. A coolant leak does not identify one particular failed component. Confirm the source before selecting parts.
If the repair calls for connector 11118619408, you can buy the Gen 1 B58 billet connector individually. If the job includes the upper radiator hose, compare the contents and fitment of the F2X/F3X B58 upper radiator hose repair kit. For a wider refresh, browse the BMW cooling range for your specific chassis and engine.
Before you order
Match the original part number, confirm your engine generation and read the current product page for what is included, pricing and lead time. If you are unsure, contact MAXQ with your vehicle details and the part number you are replacing.