Dorman 949-730XD Suspension Strut and Coil Spring Assembly - Front

Loaded Magnetic Front Strut Assembly

Dorman 949-730XD is a front suspension strut and coil spring assembly for select GMC, Chevrolet, and Cadillac trucks and SUVs with magnetic ride control. It replaces a common OE failure point with an upgraded top seal design and a pre-assembled loaded configuration for a direct repair on the front suspension.

Fits 2015-2020 Cadillac Escalade, front; 2015-2020 Chevrolet Tahoe, front; 2015-2020 GMC Yukon, front; 2015-2020 GMC Yukon XL, front; 2015-2018 Chevrolet Silverado 1500, front; 2015-2018 GMC Sierra, front; and 2015-2018 GMC Sierra 1500, front.

• Part number: 949-730XD
• Loaded magnetic strut assembly with coil spring pre-installed
• Upgraded top seal block assembly helps address fluid leakage at the OE seal area
• Patent-pending seal design relieves and restores internal fluid pressure during suspension movement
• More durable mounting points support long service life under demanding use
• Single-tube construction with gas-charged, adjustable design
• Boot included; mounting hardware not included
• Front position application for magnetic ride control systems

Why This Assembly Matters

On affected Cadillac Escalade, Chevrolet Tahoe, GMC Yukon, GMC Yukon XL, Chevrolet Silverado 1500, and GMC Sierra applications, front strut seal wear can lead to fluid loss, reduced damping, and a noticeable drop in ride control. Dorman 949-730XD addresses that failure mode with an OE FIX design that improves seal durability while keeping the assembly service-ready. This part cross-references Arnott Industries MR-3840 and SK-3354 for the same application.

Common Problems It Can Address

• Front strut fluid leakage
• Reduced damping performance
• Excessive bounce or poor ride control
• Suspension noise from worn mounting points
• Failed inspection related to suspension condition

Installation Notes

This is a pre-assembled loaded strut and spring assembly, so installation does not require a spring compressor. Confirm magnetic ride control equipment, front position, and exact vehicle fitment before installation. The assembly uses a bolt upper mount and T-bar lower mount, with no mounting hardware included.

Quality Assurance

Dorman engineered this OE FIX replacement to improve on the original seal design and strengthen key mounting areas for durability. The part number 949-730XD is built as a standard replacement for the listed front applications on 2015-2020 Cadillac Escalade, Chevrolet Tahoe, GMC Yukon, GMC Yukon XL, and 2015-2018 Chevrolet Silverado 1500 and GMC Sierra models.