Overview

The Sunair CA-300A is an A/C compressor clutch engineered for York-style compressor systems in mobile HVAC service. It features a single-wire coil with a bullet-type terminal for quick hookup and straightforward troubleshooting. A standardized 42 mm distance from clutch face to mounting flange supports OE-like alignment, while availability in both 12 V (CA-300A) and 24 V (CA-300A-24V) configurations allows easy matching to mixed fleet electrical systems. Designed as a direct replacement for York compressor clutches, it is also used on related equipment such as International G2504 systems for reliable compressor engagement and disengagement.

Key specifications and fit

This clutch carries a maximum diameter of 152 mm and an A2 pulley groove configuration to drive A-section belts with consistent tracking. The keyed hub mounting provides positive torque transfer under load, and the one-wire/one-terminal coil minimizes wiring complexity in tight engine bays. The CA-300A is recognized across multiple OEM and aftermarket references, helping service operations source a like-for-like replacement without bracket or spacer changes. Whether supporting heavy-duty trucks, off-road equipment, or agricultural HVAC, the spec-aligned geometry and electrical options simplify drop-in replacement on York-based systems.

Installation notes

Verify coil voltage (12 V or 24 V), terminal style (bullet), pulley groove profile (A2), clutch-to-flange distance (42 mm), and diameter (152 mm) against your existing unit to ensure proper belt alignment and electrical compatibility. When matched to these parameters, the CA-300A offers a clean, time-saving replacement path that helps restore dependable A/C performance with minimal rework.