A-Premium Air Conditioner AC Compressor Clutch Kit — TRSA12 12V, 6-Groove 105mm Pulley, 1-Year Warranty

A-Premium Air Conditioner AC Compressor Clutch Kit is a complete 12V TRSA12 replacement clutch assembly engineered to restore A/C engagement on compatible 4.2L I6 SUVs and trucks.

If your vehicle’s air conditioning clutch is slipping, noisy, or failing to engage, this kit supplies the pulley with bearing, front plate, and electromagnetic coil needed to rebuild the compressor end of the system. Designed for TRSA12 compressors with a 6-groove pulley and 105 mm diameter, the kit targets late-model GMC, Chevy, Buick, Isuzu, Oldsmobile and Saab vehicles that use the 4.2L inline-6 engine. A-Premium backs the part with a one-year unlimited-mileage guarantee, and the listing reminds buyers to verify fitment with their vehicle information before ordering.

Which vehicles will this clutch kit fit?

This kit fits a range of GM-based platforms and related badge-engineered models that use the 4.2L I6 engine and a TRSA12 compressor. Confirm year and drivetrain before purchasing, since the same model name may use different compressors across years or trims.

• Buick Rainier: 2004–2007, 4.2L inline-6
• Chevrolet Trailblazer & Trailblazer EXT: 2002–2009 / EXT 2002–2006, 4.2L inline-6
• GMC Envoy, Envoy XL, Envoy XUV: 2002–2009 / XL 2002–2006 / XUV 2005, 4.2L inline-6
• Isuzu Ascender: 2003–2008, Oldsmobile Bravada: 2002–2004, Saab 9-7x: 2005–2009

What are the key technical specifications I should know?

The clutch kit is built for TRSA12 compressor housings and electrical systems, operating at standard 12 volts. The pulley rotates on a built-in bearing and is sized to match factory belt routing and front-end accessory spacing.

• Compressor style: TRSA12
• Pulley grooves: 6 (multi-rib belt compatible)
• Pulley diameter: 105 mm
• Operating voltage: 12 V

What comes in the package and how does installation go?

The kit is supplied as a three-piece assembly so you can replace the worn clutch components without changing the entire compressor. Basic mechanical skills and common shop tools are enough for a competent DIYer; some installations may require specialized pullers or torque tools, so inspect the vehicle before starting.

• Included parts: pulley with bearing, front plate, electromagnetic coil
• Typical needs: clutch puller, snap-ring tools, torque wrench (vehicle-specific)
• Fitment check: enter vehicle details on the listing page before purchase

How reliable is the A-Premium kit and what warranty is offered?

A-Premium offers a one-year unlimited-mileage guarantee on this clutch kit, covering manufacturing defects under normal use. The company positions this as a cost-effective repair option to restore A/C engagement without replacing the entire compressor when the rest of the unit is in good condition.

• Warranty: 1-year unlimited mileage
• Scope: covers workmanship and material defects (refer to policy)
• Customer note: verify special notes and vehicle data in the listing before ordering

Who is this for: The A-Premium AC Compressor Clutch Kit is aimed at owners and technicians servicing mid-2000s GM-derived SUVs and trucks with the 4.2L inline-six who need a direct-fit replacement clutch assembly. It's a practical choice for repair shops, automotive DIYers comfortable with A/C components, and anyone seeking a cost-saving alternative to full compressor replacement—provided the compressor body and internal components are in good condition. Always confirm compressor type (TRSA12) and pulley dimensions against your vehicle before installation.