BMW G20 G21 G22 G26 xDrive ORIGINAL steering gear steering gear
For the BMW G-Series (3 Series G20/G21 and 4 Series G22/G26) with xDrive, finding the “original” steering gear can be tricky because BMW has updated the part number more than 20 times to improve software logic and mechanical durability.
The current “umbrella” part number for the genuine BMW xDrive steering rack is 32105B653A1, but your specific car might use one of several “superseded” numbers.
1. Key Part Numbers (xDrive Models)
Because xDrive models have different front axle geometry and clearance requirements than RWD models, you must use a rack specifically designated for all-wheel drive.
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Current Production/Service Part: 32105B653A1
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Common Supersessions (Interchangeable):
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32105A82526
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32105A748E3
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32105A65A20
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32106899681
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32106896214 (Early production)
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2. Technical Compatibility
The G20/G22 platform uses an Electric Power Steering (EPS) system. However, the hardware differs significantly based on the engine and options:
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Variable Sport Steering (Option S2VLA): Many M-Sport or M340i/M440i models come with this “variable ratio” rack. It allows for fewer turns lock-to-lock (approx. 2.1 turns). If your car has this option, you must replace it with an S2VLA-coded rack.
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4-Cylinder vs. 6-Cylinder: Interestingly, BMW uses different rack architectures for different engines. The 330i (4-cyl) often uses a dual-pinion system, while the M340i (6-cyl) uses a belt-driven paraxial system due to engine bay packaging and weight.
3. Known Failure Points
If you are replacing your rack, it is likely due to one of these common G-series issues:
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The “BMW Knock”: A mechanical clunking sound when turning at low speeds or driving over cobbles.
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Electronic Failure: Loss of power assistance often accompanied by a “Steering effort increased” message.
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Sheared Motor Bolts: On some early units, the aluminum bolts holding the electric motor to the rack can corrode and snap.
Evelyn Clark (verified owner) –
Engine performance shown as reliable.
Jack Richardson (verified owner) –
Gearbox operates smoothly in mockup.
Benjamin Reed (verified owner) –
Engine performance appears strong in this demo setup.
Mia Hughes (verified owner) –
No irregular behavior shown in the interface.
Benjamin Wright (verified owner) –
Fender appears well-aligned.
Victoria Cooper (verified owner) –
No irregular movement shown.
Henry Foster (verified owner) –
Used for product page.
James Reynolds (verified owner) –
Engine performance appears strong and stable.
Hannah Young (verified owner) –
Stable behavior shown in system.
Brooklyn Foster (verified owner) –
Gearbox shifts appear smooth.
Chloe Martin (verified owner) –
Fast stopping shown in simulation.
Lucas Turner (verified owner) –
Clean finish in product view.
Harper Collins (verified owner) –
Suspension appears stable and responsive.
Brooklyn Carter (verified owner) –
BMW Bumper
Amelia Foster (verified owner) –
UI preview content only.
Emma Collins (verified owner) –
UI sample data only.
Isaac Morgan (verified owner) –
Used for design preview only.
Scarlett Adams (verified owner) –
Braking response appears fast and stable.
Ella Roberts (verified owner) –
Wheels appear strong and premium.
Michael Harris (verified owner) –
For layout use.
Joseph Lee (verified owner) –
BMW Shock
Oliver Scott (verified owner) –
BMW Wheels
Lily Martin (verified owner) –
Bumper design looks strong.
Joshua Carter (verified owner) –
Strong visual quality.
David King (verified owner) –
Very smooth and refined behavior shown.
Layla Baker (verified owner) –
Fit and finish look very clean.
Joseph Lee (verified owner) –
Clean and modern styling overall.
Amelia Brooks (verified owner) –
Smooth and well-controlled shifting.
Harper Evans (verified owner) –
Everything feels well-engineered and stable.
Harper Evans (verified owner) –
BMW Shock
Brooklyn Carter (verified owner) –
BMW Transmission
James Parker (verified owner) –
The power delivery feels refined and well-balanced.
Harper Evans (verified owner) –
Design aligns well with vehicle structure.