Unity 31-140500 Air Spring to Coil Spring Conversion Kit - Front

Front Air Spring to Coil Spring Conversion Kit

Unity 31-140500 is a front air spring to coil spring conversion kit for select full-size GM and Cadillac applications. It is built as a pre-assembled complete strut assembly conversion kit for vehicles originally equipped with air or electronic strut assemblies.

Compatible With front suspension service on 1985-1990 Cadillac Commercial Chassis, 1985-1990 Cadillac DeVille, 1985-1990 Cadillac Fleetwood, 1986-1990 Buick LeSabre, 1985-1990 Oldsmobile 98, and 1987-1990 Pontiac Bonneville. This part number, 31-140500, is a direct-fit front conversion solution for these applications.

Key Features

• Front-position conversion kit for air spring to coil spring replacement
• Pre-assembled complete strut assembly format for faster service
• Built to OEM specifications for fit and function
• Designed for vehicles originally using air or electronic strut assemblies
• Unity Automotive product line backed by more than 40 years in aftermarket suspension

Product Details

Unity’s Pre-assembled Complete Strut Assembly Conversion Kit line focuses on suspension replacement parts engineered for consistent fitment and dependable service. Part number 31-140500 is part of that line and is intended for front suspension applications where the original air suspension has been replaced with a coil spring setup. For shoppers searching for a front air suspension conversion kit for Buick LeSabre, Cadillac DeVille, Cadillac Fleetwood, Oldsmobile 98, or Pontiac Bonneville, this assembly provides a direct replacement path within the listed model years.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Part Addresses

• Front air strut failure or loss of ride support
• Electronic suspension faults tied to aging air components
• Uneven front ride height caused by worn air springs
• Repeated service issues from deteriorated original suspension assemblies
• Need to convert from air suspension to a coil spring setup on listed vehicles

Installation Notes

Verify year, make, model, and front position before ordering. This kit is listed for front applications only and should be matched to the vehicle’s original suspension configuration. Confirm that the vehicle is one of the supported applications before installation, including 1986-1990 Buick LeSabre, 1985-1990 Cadillac Commercial Chassis, 1985-1990 Cadillac DeVille, 1985-1990 Cadillac Fleetwood, 1985-1990 Oldsmobile 98, or 1987-1990 Pontiac Bonneville.

Quality Assurance

Unity Automotive has over 40 years of aftermarket suspension manufacturing experience and builds its parts to OEM specifications. The brand’s focus on suspension engineering and product consistency supports confident installation on the listed front applications. Part number 31-140500 reflects Unity’s pre-assembled conversion kit approach for service-ready suspension replacement.