Four Seasons 78541 A/C Compressor

Overview of Four Seasons New Compressor 78541

The Four Seasons New Compressor 78541 is designed specifically for select Audi and Volkswagen models, including the A3, Golf, Jetta, and TT series. This A/C compressor is engineered to meet the demands of vehicles using R134a refrigerant, ensuring reliable air conditioning performance.

• Compatible with R134a refrigerant and Pag 46 oil
• Includes oil pre-filled for immediate installation
• Features a 6-groove serpentine pulley for optimal belt engagement
• Comes with clutch assembly included, clutch max diameter 3.75 inches
• 12-volt coil with 1 wire lead terminal type (pin)
• Ear mount style with precise mounting distance of 35.56 mm
• Designed as a Sanden SD7V16 compressor type with VQS compressor head
• Includes green O-rings for suction and discharge ports

Four Seasons New Compressor Product Line Details

The New Compressor line from Four Seasons focuses on delivering brand-new, direct replacement A/C compressors that meet original equipment specifications. This line emphasizes compatibility and ease of installation, providing components such as the clutch and oil pre-filled to reduce installation time. The 78541 model exemplifies this approach by including all necessary internal components except mounting hardware, ensuring a straightforward upgrade for Audi and Volkswagen vehicles.

Technical Description and Features

The Four Seasons 78541 A/C compressor is a Sanden SD7V16 type, designed for vehicles equipped with R134a refrigerant systems. It comes pre-filled with Pag 46 oil, which is compatible with the refrigerant type, helping maintain system lubrication and longevity. The compressor features a 6-groove serpentine pulley with a diameter of 95.25 mm, designed to work with the vehicle’s belt system efficiently. The clutch assembly is included, with a maximum diameter of 3.75 inches and a coil voltage of 12 volts, utilizing a pin terminal type with a single wire lead for electrical connection. The mounting style is ear mount with a 35.56 mm distance, and the compressor head is configured with a rear vertical pad and VQS head type. Both suction and discharge ports use O-ring seals, with green O-rings included to ensure a proper seal and prevent leaks.

Compatible Vehicles and Common Applications

• Audi models: A3, TT, TT Quattro
• Volkswagen models: Beetle, Beetle Cabrio, Clasico, Golf, GTI, Jetta, Polo, R32, Sharan
• Designed for vehicles requiring a Sanden SD7V16 compressor with R134a refrigerant
• Suitable for systems using serpentine belt drives with 6-groove pulleys

Common Issues Addressed by This Compressor

• Loss of A/C cooling due to compressor failure
• Clutch engagement problems causing intermittent A/C operation
• Leaks at suction or discharge ports due to worn O-rings
• Noise or pulley bearing failure in original compressor units
• Incompatibility with R134a refrigerant systems requiring updated compressor design

Installation Notes and Tips

• May require use of original equipment (OE) electrical connector for clutch coil
• Mounting hardware is not included; reuse existing hardware or source separately
• Ensure system is properly evacuated and recharged with R134a refrigerant and Pag 46 oil
• Verify pulley alignment and belt tension during installation
• Check clutch air gap and electrical connections before final assembly

Quality Assurance and Warranty

The Four Seasons New Compressor 78541 is a brand-new replacement part manufactured to meet or exceed OEM specifications. It includes pre-filled oil and necessary O-rings to ensure proper sealing and lubrication. While mounting hardware is not included, the compressor is designed for direct fitment on compatible Audi and Volkswagen models. Warranty coverage details should be confirmed with the parts provider, but Four Seasons typically offers limited warranties covering defects in materials and workmanship.