Bilstein 22-309631 Suspension Strut Assembly - Front Left
OE Replacement Front Left Strut
Bilstein B4 OE Replacement part number 22-309631 is a front left suspension strut assembly built to restore original ride quality and handling. It is engineered to meet or exceed OE standards for drivers who want factory-style performance on the BMW Z4 and Toyota GR Supra.
The B4 OE Replacement line focuses on preserving the vehicle’s original suspension feel while using Bilstein’s twintube damper design and black painted finish. This front left unit uses a stem upper mount and base cup lower mount, and it does not include a boot.
- Front left suspension strut assembly
- Bilstein B4 OE Replacement series
- Twintube internal design for OE-style damping response
- Black paint finish
- Upper mount type: stem; lower mount type: base cup
- No boot included
Fitment Details
- Fits 2019-2026 BMW Z4, front left; sport suspension without electronic suspension; B4 OE Replacement.
- Fits 2020-2026 Toyota GR Supra, front left; without electronic suspension; B4 OE Replacement.
What This Strut Helps Address
- Excessive front-end bounce or oscillation
- Reduced steering precision from worn suspension damping
- Uneven ride quality on the front left corner
- Noise or harshness caused by a fatigued OE strut
- Loss of factory ride control on BMW Z4 or Toyota GR Supra applications
Installation Notes and Tips
Verify the vehicle is equipped with sport suspension without electronic suspension on BMW Z4 applications, or without electronic suspension on Toyota GR Supra applications before ordering. Confirm the front left position, mount style, and suspension configuration against the original part number 22-309631 and the listed cross-reference applications. This part cross-references OE numbers 31 31 6 879 193 and 48520-WAA04 for the same application.
Quality Assurance
Bilstein B4 OE Replacement dampers are built to OE-level standards for restoring original ride characteristics and handling balance. Part number 22-309631 is backed by Bilstein’s suspension engineering and OE replacement focus for direct-fit service on the listed BMW Z4 and Toyota GR Supra applications.
Original: $235.57
-65%$235.57
$82.45Bilstein 22-309631 Suspension Strut Assembly - Front Left
OE Replacement Front Left Strut
Bilstein B4 OE Replacement part number 22-309631 is a front left suspension strut assembly built to restore original ride quality and handling. It is engineered to meet or exceed OE standards for drivers who want factory-style performance on the BMW Z4 and Toyota GR Supra.
The B4 OE Replacement line focuses on preserving the vehicle’s original suspension feel while using Bilstein’s twintube damper design and black painted finish. This front left unit uses a stem upper mount and base cup lower mount, and it does not include a boot.
- Front left suspension strut assembly
- Bilstein B4 OE Replacement series
- Twintube internal design for OE-style damping response
- Black paint finish
- Upper mount type: stem; lower mount type: base cup
- No boot included
Fitment Details
- Fits 2019-2026 BMW Z4, front left; sport suspension without electronic suspension; B4 OE Replacement.
- Fits 2020-2026 Toyota GR Supra, front left; without electronic suspension; B4 OE Replacement.
What This Strut Helps Address
- Excessive front-end bounce or oscillation
- Reduced steering precision from worn suspension damping
- Uneven ride quality on the front left corner
- Noise or harshness caused by a fatigued OE strut
- Loss of factory ride control on BMW Z4 or Toyota GR Supra applications
Installation Notes and Tips
Verify the vehicle is equipped with sport suspension without electronic suspension on BMW Z4 applications, or without electronic suspension on Toyota GR Supra applications before ordering. Confirm the front left position, mount style, and suspension configuration against the original part number 22-309631 and the listed cross-reference applications. This part cross-references OE numbers 31 31 6 879 193 and 48520-WAA04 for the same application.
Quality Assurance
Bilstein B4 OE Replacement dampers are built to OE-level standards for restoring original ride characteristics and handling balance. Part number 22-309631 is backed by Bilstein’s suspension engineering and OE replacement focus for direct-fit service on the listed BMW Z4 and Toyota GR Supra applications.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
OE Replacement Front Left Strut
Bilstein B4 OE Replacement part number 22-309631 is a front left suspension strut assembly built to restore original ride quality and handling. It is engineered to meet or exceed OE standards for drivers who want factory-style performance on the BMW Z4 and Toyota GR Supra.
The B4 OE Replacement line focuses on preserving the vehicle’s original suspension feel while using Bilstein’s twintube damper design and black painted finish. This front left unit uses a stem upper mount and base cup lower mount, and it does not include a boot.
- Front left suspension strut assembly
- Bilstein B4 OE Replacement series
- Twintube internal design for OE-style damping response
- Black paint finish
- Upper mount type: stem; lower mount type: base cup
- No boot included
Fitment Details
- Fits 2019-2026 BMW Z4, front left; sport suspension without electronic suspension; B4 OE Replacement.
- Fits 2020-2026 Toyota GR Supra, front left; without electronic suspension; B4 OE Replacement.
What This Strut Helps Address
- Excessive front-end bounce or oscillation
- Reduced steering precision from worn suspension damping
- Uneven ride quality on the front left corner
- Noise or harshness caused by a fatigued OE strut
- Loss of factory ride control on BMW Z4 or Toyota GR Supra applications
Installation Notes and Tips
Verify the vehicle is equipped with sport suspension without electronic suspension on BMW Z4 applications, or without electronic suspension on Toyota GR Supra applications before ordering. Confirm the front left position, mount style, and suspension configuration against the original part number 22-309631 and the listed cross-reference applications. This part cross-references OE numbers 31 31 6 879 193 and 48520-WAA04 for the same application.
Quality Assurance
Bilstein B4 OE Replacement dampers are built to OE-level standards for restoring original ride characteristics and handling balance. Part number 22-309631 is backed by Bilstein’s suspension engineering and OE replacement focus for direct-fit service on the listed BMW Z4 and Toyota GR Supra applications.
