Sanden/R4 Multi-Groove Conversion Bracket

The Vintage Air Sanden/R4 Multi-Groove Conversion Bracket (part number 141805) is a precision steel mounting solution engineered for retrofitting air conditioning systems into classic vehicles with small block Chevy engines. This conversion bracket accommodates Sanden 508 compressors and serves as the mechanical interface between the compressor and the engine block, enabling modern climate control in vehicles originally built without factory AC systems.

The bracket is machined from steel in a natural finish, designed to handle the specific bolt pattern and clearance requirements of small block Chevrolet engines. The multi-groove design provides multiple mounting positions, allowing installers to optimize belt alignment and compressor placement relative to other engine accessories. At 1.72 lbs with compact dimensions (7.85 x 1.65 x 8.45 inches), the bracket fits within tight engine bay configurations common in classic vehicles. Its construction supports the weight and operational forces of a full Sanden 508 refrigeration system while maintaining proper pulley alignment for serpentine or V-belt drive systems.

Restoration enthusiasts and custom fabricators use this bracket as a core component when adding aftermarket AC to muscle cars, hot rods, and classic trucks. The Sanden 508 is among the most reliable compact compressors in the classic car market, and this bracket simplifies the installation process by providing a pre-engineered mounting point. It eliminates the need for custom welding or fabrication when integrating modern refrigeration into vehicles that never left the factory with air conditioning. Vintage Air brackets are manufactured to exact OEM specifications, ensuring proper fit and durability in street, show, and off-road applications.