Front-Strut Sealing Washer 31306772226

Protect your suspension bearings and keep the ride whisper-quiet with the genuine BMW front-strut sealing washer (part 31306772226). Pressed from corrosion-proof zinc-plated steel with a nitrile rubber lip, this gasket sits between the upper spring seat and the strut-tower cup, sealing out water, salty road spray and abrasive dirt that cause bearing noise and premature strut-mount failure.

Key Benefits

• Exact OEM geometry – 55 mm inner bore and formed outer flange match the factory spring seat; slips on with zero modification.

• Dual-material construction – rigid steel core for clamp load, over-moulded NBR lip for a watertight barrier.

• Noise & vibration control – eliminates metal-to-metal chirps when steering or driving over speed-bumps.

• Long-life plating – yellow passivated surface resists rust under winter salt and humid climates.

• BMW parts warranty – full 24-month coverage for peace of mind.

Vehicle Compatibility*

• 1 Series E81 • E82 • E87 • E88 (2004 – 2013)

• 3 Series E90 • E91 • E92 • E93 (2005 – 2013)

• X1 E84 (2009 – 2015)

• Z4 E89 (2009 – 2016)

*Fits front axle on models equipped with standard or M-Sport suspension. Always match the stamping 31 30 6 772 226 on your original washer or confirm by VIN.

Technical Specifications

• Part number: 31306772226

• Material: Zn-plated steel core + NBR sealing lip

• Inner Ø: 55 mm • Outer Ø: 80 mm • Thickness: 2 mm

• Operating temp: −40 °C … +120 °C

• Position: Front suspension – between strut mount bearing & tower

• Warranty: 24 months / unlimited km

Quick Installation Snapshot

1. Raise vehicle and remove front strut assembly.

2. Compress spring; dismantle top mount.

3. Replace old or corroded sealing washer with new part—ensure rubber lip faces strut tower.

4. Re-assemble, torque to BMW TIS specs, align wheels, road-test for silence.