BMW 118i F20/F21 170hp N13B16A 2011-2015

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BMW 118i F20/F21 170hp N13B16A 2011-2015

BMW 118i F20/F21 170hp N13B16A 2011-2015

BMW 118i F20/F21 170hp N13B16A 2011-2015 

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BMW 118i F20/F21 170hp N13B16A 2011-2015

On the N13B16A of the BMW 118i F20/F21, raising boost pressure puts head sealing to the test before anything else. That is what this page covers.

The MLS head gasket is offered as a COMETIC MLX with a 78.0mm bore in six compressed thicknesses from 0.81 to 1.32mm, and as an ATHENA MLS of 78.5mm in 0.90mm. ARP head studs come in the ARP2000 range, the main studs in 8740 and the con rod bolts in ARP2000.

Choosing gasket thickness means setting the compression ratio: decide it together with the piston size.