They are specifically designed to serve as replacements for BMW part numbers #11247624616 and #11247589671 in the BMW N20 / N26 4-cylinder engines with a 144

G26 M440i xDrive Gran Coupe

Please note that these 135 mm connecting rods are designed to fit M54B30 and M54B28 135mm Rod engines

and valve float for optimal power delivery and engine longevity

Unlike those kits

BMW M30 Cut Ring Head Gasket by Athena-SCE Bore Size - Thickness:95.6 mm - 0.079" They are specifically designed toThis Athena Cut Ring Head Gasket is specifically engineered to replace BMW part # 11121730226 and 11121730227 for the M30B30, M30B34, and M30B35. Factory OEM & MLS head gaskets are only engineered to handle a limited amount of cylinder pressures before they start to leak, causing a range of issues, including engine overheating, loss of power, misfires, and in severe cases, catastrophic engine failure. Athena SCE Cut Ring Head Gaskets are uniquely