TYC 20321 A/C Compressor

Product Overview

This TYC A/C compressor is built for R-134a systems and uses a 12V coil with a 6-groove pulley. It is a fitment-based replacement for select Buick, Pontiac, and Oldsmobile applications, including Buick LeSabre, Buick Park Avenue, and Pontiac Bonneville.

Part number 20321 is specified with PAG oil, two O-rings, and a 2-year warranty note. For buyers searching for an A/C compressor for Buick LeSabre or Pontiac Bonneville applications, 20321 provides the core service specifications needed for a direct replacement search.

Key Features

• R-134a refrigerant compressor for modern retrofit and service applications.
• 12V coil voltage for standard automotive electrical systems.
• 6-groove pulley wheel for belt-driven accessory layouts.
• PAG oil specification with 5 oz oil quantity listed.
• Includes two O-rings per the product attributes.
• TYC part number 20321 for catalog and cross-reference lookup.

Detailed Description

TYC 20321 is an A/C compressor intended for select GM full-size and near-luxury platforms from the mid-1990s through the mid-2000s. Fitment includes 1996-2005 Buick LeSabre, 1996-2005 Buick Park Avenue, 1996-2005 Pontiac Bonneville, 1996-1999 Buick Riviera, 1996-1999 Oldsmobile 88, 1996-1999 Oldsmobile LSS, 1997-1998 Oldsmobile Regency, and 1996 Oldsmobile 98. This part cross-references Four Seasons 58994 for the same application.

The compressor is configured for R-134a refrigerant and a 12V clutch coil, with PAG oil and a 6-groove pulley. Those specifications make it a practical replacement choice when restoring cooling performance on compatible Buick, Pontiac, and Oldsmobile vehicles. Part number 20321 should be matched to the vehicle’s existing compressor configuration before installation.

What It Helps Address

• Weak or inconsistent cabin cooling.
• Noisy compressor operation from worn internal components.
• Loss of refrigerant compression in the A/C system.
• System service needs tied to a failed clutch or compressor assembly.
• Fitment searches for a replacement A/C compressor by part number 20321.

Installation Notes

Verify refrigerant type, pulley groove count, and electrical coil voltage before installation. Confirm the vehicle’s A/C system uses R-134a and compare the existing compressor configuration to the listed attributes for TYC 20321. Proper evacuation, recharge, and system inspection are recommended after replacement.

Quality Assurance

This TYC compressor is listed with a 2-year warranty note in the product attributes. Use the part number 20321 and the vehicle fitment details to confirm application before ordering.