BMW E31 Rubber Air Intake Boot — Left & Right Pair (Replaces OEM 13711733301 / 13711733302)

A complete pair (left and right) of rubber air intake boots for the BMW E31 8 Series — direct OEM-spec replacements for part numbers 13711733301 and 13711733302.

Built from modern fuel- and oil-resistant rubber compounds, with the original mounting geometry, clamping diameters, and routing preserved. Installs with the factory clamps onto the throttle bodies and air intake plenum without modification.

On a 30-year-old V12 the original boots are almost always cracked, hardened, or split along the corrugations — causing unmetered air to enter the intake, leading to rough idle, lean codes, EML warnings, and one bank running noticeably differently from the other.

Key specifications

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