KYB 364021 Suspension Strut Cartridge - Front
OE Quality 60-Day Returns
KYB
 Excel-G

KYB 364021 Suspension Strut Cartridge - Front

Brand KYB 364021
Position Front
Compressed Length 17.36
Extended Length 24.57
Stroke Length 16.97
Upper Mount Type 12X1.25
Product line Excel-G
Fits BMW · 24 vehicles

OE replacement cartridge. Restores original control and handling.

Twin-tube design. Nitrogen gas-charged for consistent damping.

OE-quality components. Built on KYB OE assembly lines.

Cross-references Monroe Shocks & Struts 73216 for the same application. See all 1.

$61.78Free shipping
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Suspension Strut Cartridges are typically replaced in pairs, axle by axle.
Order total $61.78
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Free returns within 60 days if it doesn't fit when fitment is verified.
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KYB Excel-G Front Strut Cartridge

The KYB Excel-G 364021 is a front suspension strut cartridge for select BMW E30 models. It is built to restore original ride control, steering response, and handling balance while maintaining OE-style performance characteristics.

For BMW 318i, 318is, 325e, 325i, 325is, and M3 applications, this KYB Excel-G strut cartridge is a direct replacement choice for front suspension service on vehicles with the listed housing and suspension configurations.

Key Features

  • KYB recommended OEM replacement gas cartridge
  • Restores designed control, stability, and handling response
  • Nitrogen gas-charged twin-tube construction
  • Triple-lip fluid seal helps reduce oil and gas leakage
  • Vehicle-specific, hand-assembled damping valves manage tire contact and body movement
  • Strong strut body and bracket design helps minimize flex and maintain alignment
  • Part number 364021 for front suspension applications

Excel-G Product Line

KYB Excel-G is the brand’s OE-style replacement line for drivers who want factory-like suspension behavior rather than a changed ride feel. It is assembled on KYB OE production lines using OE-quality components and calibrated to return the vehicle to its original designed performance. The 364021 cartridge follows that approach for compatible BMW front strut applications.

Detailed Description

This suspension strut cartridge is engineered for front-end service on compatible BMW E30 chassis vehicles, including 1984-1992 BMW 318i, 318is, 325e, 325i, 325is, and 1988-1991 BMW M3 applications listed in the fitment data. The KYB 364021 is intended to restore the vehicle’s original ride control, lane-change response, and braking stability by matching OE-style damping characteristics. It is a practical choice when replacing a worn front strut cartridge on a BMW 325i front suspension or a BMW 318i front suspension service.

This part cross-references Monroe Shocks & Struts 73216 for the same application.

What It Helps Address

  • Excessive front-end bounce or oscillation
  • Loose steering feel or delayed response
  • Nose dive during braking
  • Uneven tire contact from worn damping control
  • Body movement that affects cornering stability

Installation Notes and Tips

  • Compatible with front applications only as listed in the fitment data.
  • Some BMW E30 applications note use with Boot Kit SB101 to protect the cartridge from dirt, debris, and salt.
  • KYB recommends new strut mounts, part number SM5053, to reduce noise and vibration.
  • Verify housing diameter, suspension type, and production date before installation on BMW 325e and 325i models.
  • Professional installation and a post-service alignment are recommended after front strut replacement.

Quality Assurance

KYB is a global OE supplier of shocks and struts, and Excel-G products are built on KYB OE assembly lines with OE-quality components. The 364021 is calibrated to restore original suspension performance for the listed BMW front applications.

Related reading

This part fits 24 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypePositionNotes
1992BMW318iConvertibleFrontRecommended OEM Replacement; (E30); TO 3/1992; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1992BMW318is—FrontRecommended OEM Replacement; (E30); To 3/92; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1991BMW318iConvertibleFrontRecommended OEM Replacement; (E30); The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1991BMW318is—FrontRecommended OEM Replacement; (E30); The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1991BMW325i—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/ 51mm Housing Diameter; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1991BMW325is—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/ 51mm Housing Diameter; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1991BMWM3—FrontRecommended OEM Replacement; (E30); The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1990BMW325i—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/ 51mm Housing Diameter; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1990BMW325is—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/ 51mm Housing Diameter; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1990BMWM3—FrontRecommended OEM Replacement; (E30); The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1989BMW325i—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/ 51mm Housing Diameter; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1989BMW325is—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/ 51mm Housing Diameter; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1989BMWM3—FrontRecommended OEM Replacement; (E30); The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1988BMW325i—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/ 51mm Housing Diameter; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1988BMW325is—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/ 51mm Housing Diameter; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1988BMWM3—FrontRecommended OEM Replacement; (E30); The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1987BMW325e—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); To 8/1987; Excel-G
1987BMW325e—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/o High Pressure Strut (1 1/2 inch Piston Rod); From 9/1987; Excel-G
1987BMW325e—FrontRecommended OEM Replacement; Exc. M-Technik Susp.; (E30); w/ High Pressure Strut (1 1/2 inch piston rod); From 9/1987; The original High Pressure Gas Cartridge can be replaced by 364021 with Boot Kit SB101; Excel-G
1986BMW325e—FrontRecommended OEM replacement, excluding M-Technik suspension, for E30 models.; Excel-G
1985BMW318i—FrontRecommended OEM Replacement; w/ 51mm Housing Diameter; Excel-G
1985BMW325e—FrontRecommended OEM replacement, excluding M-Technik suspension, for E30 models.; Excel-G
1984BMW318i—FrontRecommended OEM Replacement; w/ 51mm Housing Diameter; Excel-G
1984BMW325e—FrontRecommended OEM replacement, excluding M-Technik suspension, for E30 models.; Excel-G
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Monroe Shocks & Struts — 73216