Dinan Protection Sock | BMW 540i (97-03) (D401-0113) YMM_2024_2026_BMW_3_Series_VII_LCI_G20_G21 Ensure your vehicle's steering hub

Ensure your vehicle's steering hub matches the wheel's mounting pattern before installation

Patent: US7527293B1 ensures a unique design optimized for minimal mounting surface while retaining full horn and turn signal functionality

2014 BMW 435i/440i Gran Coupe AWD (w/ EDC)

Its design ensures a clean

making it compatible with a variety of turbo

Dinan Protection Sock | BMW 540i (97-03) (D401-0113) YMM_2024_2026_BMW_3_Series_VII_LCI_G20_G21 Ensure your vehicle's steering hubThe Dinan 97 03 BMW 540i Protection Sock is a high quality replacement air filter protection sock designed to shield the air filter from dirt, debris, and contaminants. Constructed from durable, breathable materials, this sock helps maintain optimal airflow and filtration efficiency, ensuring the engine receives clean air for improved performance. Its primary function is to extend the lifespan of the air filter while preventing potential damage caused