Four Seasons 78545 A/C Compressor

Reliable A/C Compressor for Dodge B-Series Vans

The Four Seasons New Compressor 78545 is designed to restore efficient air conditioning performance in Dodge B1500, B2500, B3500, Ram 1500 Van, Ram 2500 Van, and Ram 3500 Van models. Engineered for compatibility with R134a refrigerant, this A/C compressor ensures proper cooling and system reliability.

• Compatible with R134a refrigerant and Pag 46 oil
• Includes clutch and heat sensor switch for optimal operation
• Features a 7-groove serpentine pulley with 3.75-inch diameter
• 12-volt coil with 1 wire lead for straightforward electrical connection
• Tangent mount type with precise 1.90625-inch clutch to mounting flange distance
• Sealing washer type suction and discharge ports with included O-rings
• Designed specifically for Dodge B1500, B2500, B3500, Ram 1500 Van, Ram 2500 Van, and Ram 3500 Van

Four Seasons New Compressor Product Line

The New Compressor line by Four Seasons offers brand-new, direct replacement A/C compressors engineered to meet original equipment specifications. This product line focuses on delivering reliable performance and durability, featuring components such as included clutches and heat sensor switches to ensure seamless integration with your vehicle’s HVAC system. The 78545 model exemplifies this approach with its precise fit and comprehensive features tailored for Dodge vans.

Detailed Product Description

The Four Seasons 78545 A/C compressor is a TRF105 type compressor designed for use with R134a refrigerant and compatible with Pag 46 oil. It comes oil-filled and includes a clutch assembly with a maximum diameter of 3.75 inches, ensuring proper engagement and operation. The compressor features a 7-groove serpentine pulley with a 3.75-inch diameter lip and ridge, providing reliable belt alignment and power transfer. The coil operates at 12 volts with a single wire lead, simplifying installation. Both suction and discharge ports use sealing washers with included O-rings (part numbers 24354 and 24355) to maintain system integrity and prevent leaks. The mounting type is tangent mount with a 48 mm mount distance, designed to fit securely in the specified Dodge van models.

Common Applications and Issues Addressed

• Restores A/C cooling performance in Dodge B1500, B2500, B3500, and Ram 1500/2500/3500 Vans
• Replaces faulty or worn compressors causing insufficient cooling
• Solves clutch engagement problems with included clutch assembly
• Addresses refrigerant leaks with new sealing washers and O-rings
• Eliminates electrical issues related to coil or heat sensor switch failure

Installation Notes and Tips

• Ensure compatibility with vehicle refrigerant type R134a and use Pag 46 oil as specified
• Verify mounting hardware is available as it is not included with this compressor
• Check clutch clearance and pulley alignment during installation
• Replace O-rings and sealing washers to prevent leaks
• Follow manufacturer torque specifications for mounting bolts and fittings

Quality Assurance and Warranty

This Four Seasons New Compressor 78545 is a brand-new, direct replacement part manufactured to meet or exceed OEM standards. It includes essential components such as the clutch and heat sensor switch to ensure proper function. While mounting hardware is not included, the compressor is supplied oil-filled and ready for installation. Four Seasons products typically come with a limited warranty covering defects in materials and workmanship; please refer to the product documentation for specific warranty details.