ILONPA AC Air Conditioning Compressor with Clutch — Direct-Fit for 3.6L GM SUVs (Prefilled PAG100, 6-Groove Pulley)

ILONPA new air conditioning compressor with integrated clutch is a direct-fit replacement for 3.6L Buick Enclave, Chevy Traverse, GMC Acadia and Saturn Outlook models, restoring factory-style cooling performance.

This full-unit compressor is built to the 10PA20C specification and arrives prefilled with PAG 100 oil (180±10ML), ready to accept R-134a refrigerant. Designed as a direct replacement for the original equipment numbers listed, the unit aims to provide quieter operation, reduced vibration and long-term durability thanks to its high-strength aluminum alloy construction and six-groove pulley. Before installation, the vehicle’s A/C system should be thoroughly cleaned and evacuated; professional installation is recommended to guarantee correct charging and leak-free operation.

Which vehicles and OE numbers does this compressor replace?

This compressor is made specifically for GM 3.6L V6 platforms from the late 2000s to early 2010s and matches a broad range of OE reference numbers for streamlined parts cross-checking.

• Fits: Buick Enclave 2008–2012 (3.6L), Chevy Traverse 2009–2012 (3.6L), GMC Acadia 2007–2012 (3.6L), Saturn Outlook 2007–2010 (3.6L).
• Replaces common OE/aftermarket part numbers: 21625C, 1521625, 1021625, 1121625, 1221625, 639390, 4710705, 157313, 158313, 15926085, 20844676, 6512525, 7512525, 2021784, 2021784R, 1421625NC.
• Direct-fit design reduces modification needs and helps speed installation.

What are the key technical specifications and fluid requirements?

Understanding the compressor’s mechanical and fluid specifications ensures correct service and compatibility with your vehicle’s A/C system.

• Compressor type: 10PA20C, a widely used displacement for GM V6 applications.
• Oil type: PAG 100; prefilled amount: approximately 180±10 mL—verify oil quantity per vehicle service information.
• Refrigerant required: R-134a (not included); pulley: 6 grooves, 110 mm diameter.
• Ensure system is flushed and evacuated before charging to avoid contamination or compressor failure.

How does this compressor improve vehicle comfort and reliability?

The ILONPA compressor focuses on consistent cooling output and mechanical resilience to restore cabin comfort while resisting early wear.

• Aluminum alloy housing reduces weight while offering corrosion resistance and improved heat dissipation.
• Manufactured components and balanced internal parts help lower operational noise and vibration.
• Precise pulley sizing and clutch engagement replicate OEM behavior for correct belt drive alignment.
• Designed to extend service life under normal driving conditions when installed and commissioned correctly.

What should I know about installation and maintenance?

Safe and effective installation is key to long-term performance; following recommended service steps reduces the chance of repeat failures.

• Always flush the A/C system and fully remove cleaning agents prior to installing the new compressor.
• Professional installation is advised to ensure correct vacuum, leak testing and refrigerant charge.
• Confirm oil type and fill amount match vehicle service requirements after installation.
• Inspect drive belt condition and accessory pulley alignment while replacing the compressor.

Who is this compressor for? If you own a 3.6L Buick Enclave, Chevy Traverse, GMC Acadia or Saturn Outlook from the listed model years and your air conditioning has weak cooling, unusual noise, or clutch engagement issues, this ILONPA compressor is engineered as a direct-fit replacement option. It suits technicians, DIY enthusiasts with A/C tooling, and service shops seeking a robust, OE-replacing unit. For best results, have a certified technician perform the flush, install the compressor, and charge the system to factory specifications.