Original BMW M7 Turbocharger Flange Nut with Spring Washers for BMW M240i, 340i, 440i, 540i, 640i GT, 740i, X3 M40i, and X4 M40i (2016–2025)

On B58 six-cylinder engines, BMW commonly fastens the turbocharger assembly with this M7 flange nut with spring washers, Original BMW part number 11-65-8-670-587. It fits the M240i, 340i, 440i, 540i, 640i Gran Turismo, 740i, X3 M40i, and X4 M40i. The flange spreads clamping load across the mounting face, and the spring washers built into the nut help it hold tension through the heat cycles a turbo goes through. Each nut weighs 12 g, is made in Germany, and is sold individually.

Original BMW Parts carry a 24-month parts warranty.

BMW started production of this number in June 2016. The same nut is used on the F22 and F23 M240i, F30 and F34 GT 340i, F32, F33, and F36 440i, G30 540i, G32 640i Gran Turismo, G11 and G12 740i, G01 X3 M40i, and G02 X4 M40i.

Technical Details

• Manufacturer: BMW
• Part number: 11-65-8-670-587
• BMW part name: flange nut with spring washers
• Thread size: M7
• Application: turbocharger mounting on B58 engines
• Weight: 12 g
• Production start: June 2016
• Made in Germany
• Sold individually
• Warranty: 24-month Original BMW Parts warranty

Common Questions

What does this nut hold on?
It is the M7 nut BMW commonly uses to fasten the turbocharger assembly on B58 engines.

Are the washers separate?
No. BMW supplies it as a flange nut with spring washers, so the washers are part of the nut.

Fitment & Compatibility

Use the fitment table below to confirm year, make, model, submodel, and any notes tied to your exact vehicle. Pay close attention to engine, chassis, position, and option-specific details before ordering. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.