The SH 401 filter element is designed for classic BMW inline-six engines. Unlike modern spin-on filters, it uses a replaceable cartridge installed in a permanently mounted filter bowl. The high-density filter paper in the SH 401 ensures a stable oil flow to the cylinder head oil lines, which is critical for preventing camshaft wear on M30 engines.

"Old-school" protection: M30 engines have a specific lubrication system. The SH 401 ensures a rapid rise in oil pressure, preventing oil starvation during startup.

Dirt-holding capacity: The increased filtration area effectively retains gasoline combustion products and micro-particles of wear throughout the entire service life (10,000 km).

Heat stability: The impregnation of the filter material does not lose its strength even when exposed to high operating oil temperatures for extended periods.

Complete repair kit: The presence of all necessary gaskets in the transmission ensures a tight seal after replacement.

Compatibility (Cross-numbering)
BMW OE: 11421730389, 11429063138, 11421284858

MANN-FILTER: H 930 x

KNECHT/MAHLE: OX 41 D

HENGST: E142H D21