BIL B4 Series Shocks
Bilstein Suspension › Shocks and Struts

BIL B4 Series Shocks

Part # bil23-400429 MFR # 23-400429 UPC 651860969763 ID 1004751

Bilstein 18-23 BMW M550i xDrive (w/ Elect. Sus.) B4 OE Replacement (DampTronic) Shock - Front Right

✓ In Stock (4 locations)
$663.10 MSRP $682.00 Save $18.90 (3% off)
Free ground shipping on eligible orders
⚠️ Prop 65 Warning — Contains chemicals known to the State of California to cause cancer or reproductive harm.
Identification
BrandBilstein
Part Numberbil23-400429
MFR Part #23-400429
UPC / Barcode651860969763
Item ID1004751
Price GroupBilstein Kits
Born-On Date2026-01-06
CategorySuspension
SubcategoryShocks and Struts
Dimensions & Shipping
Dimensions29.6" × 7.9" × 7.9" (L×W×H)
Weight15.00 lbs
LTL FreightStandard Parcel
Air ShippingEligible
Stock & Availability
Status ✓ In Stock (4 locations)
Warehouses
● 01 ● 02 ● 03 ● 59
Regular StockNo
PowersportsNo
Compliance & Regulations
Prop 65⚠ Warning Required
CARBCompliant
ActiveActive
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