Four Seasons 77344 A/C Compressor

Overview of Four Seasons Reman Compressor 77344

The Four Seasons Reman Compressor 77344 is a remanufactured A/C compressor designed specifically for select Mercedes-Benz models. Engineered to work with R134a refrigerant and compatible with Pag 46 refrigerant oil, this compressor ensures reliable air conditioning performance for vehicles such as the Mercedes-Benz 400E, 500E, and S500.

• Compatible refrigerant type: R134a
• Compatible refrigerant oil: Pag 46
• Includes oil and clutch assembly
• 12-volt coil voltage with 1 wire lead coil clock position
• Equipped with an RPM speed sensor switch
• Serpentine belt pulley with 8 grooves
• Tangent mount type with pad mount suction and discharge ports
• Pulley diameter approximately 4.75 inches (120.65 mm)
• Remanufactured Nippondenso 10pa17c compressor type
• Includes diode and bullet terminal type

Four Seasons Reman Compressor Product Line

The Reman Compressor line by Four Seasons offers remanufactured A/C compressors that meet strict quality standards to restore factory-level performance. This product line focuses on providing reliable, cost-effective replacements for original equipment compressors, including essential components such as the clutch and oil. The 77344 model is part of this line, ensuring compatibility and durability for Mercedes-Benz vehicles requiring a Nippondenso 10pa17c compressor.

Detailed Product Description

The Four Seasons Reman Compressor 77344 is designed for Mercedes-Benz models including the 400E, 500E, 500SEC, 600SEC, 600SEL, 600SL, E300, E320, E420, E500, S320, S350, S420, S430, S500, S600, and SL600. This remanufactured compressor uses R134a refrigerant and is pre-filled with oil to ensure proper lubrication and performance. It features a serpentine belt pulley with 8 grooves and a clutch maximum diameter of 4.75 inches, which is included with the unit. The compressor is equipped with a speed sensor switch and a bullet terminal for electrical connections. Its tangent mount design and pad mount suction and discharge ports facilitate straightforward installation in compatible Mercedes-Benz vehicles.

Common Applications and Issues Addressed

• Restores A/C cooling performance in Mercedes-Benz 400E and 500E models
• Replaces failing or noisy compressors in S-Class models like S320 and S500
• Solves clutch engagement problems in E-Class vehicles such as E300 and E420
• Addresses refrigerant leaks and compressor oil contamination
• Resolves electrical issues related to the compressor coil or speed sensor

Installation Notes and Tips

• May require use of original equipment manifold due to pad mount port design
• Mounting hardware is not included; reuse existing hardware or source separately
• Ensure proper refrigerant oil type (Pag 46) is used during installation
• Verify clutch and coil connections match vehicle specifications
• Check pulley alignment and belt condition to prevent premature wear

Quality Assurance and Warranty

This Four Seasons Reman Compressor 77344 undergoes thorough remanufacturing processes to meet OEM standards. It includes a clutch assembly, oil fill, and a speed sensor switch to ensure full functionality. While mounting hardware is not included, the compressor is tested for electrical and mechanical performance. Warranty coverage details should be confirmed with the distributor or installer.