Four Seasons 1400NK A/C Compressor and Component Kit

Complete A/C Kit for V5 Applications

Four Seasons 1400NK is a complete air conditioning kit with a new compressor for select GM vehicles using a V5 compressor. It is built for R134a systems and includes the major service components needed for a full A/C repair on 1996-1998 Buick, Oldsmobile, and Pontiac applications.

The Four Seasons Complete A/C Kit line is organized to simplify major HVAC service by grouping the compressor, accumulator, orifice tube, oil, and seals into one application-specific package. For this part, the kit is matched to vehicles that use an orifice tube expansion device and dual O-ring accumulator connections.

Key Features

• Four Seasons 1400NK complete air conditioning kit with new compressor
• Includes compressor oil with PAG Oil /150 formulation
• Designed for R134a refrigerant systems
• Uses an orifice tube expansion device with a 0.072 in. white standard orifice tube
• Accumulator features 3.500 in. diameter and 8.000 in. length
• Dual O-ring inlet and outlet fittings on the receiver drier/accumulator
• Gaskets and seals included
• Limited lifetime warranty

Detailed Description

Four Seasons 1400NK is a complete A/C compressor kit for select 1996-1998 Buick LeSabre, Park Avenue, and Park Avenue applications, plus Oldsmobile 88, 98, LSS, Regency, and Pontiac Bonneville models equipped with a V5 compressor. It includes the new compressor, accumulator, orifice tube, oil, and O-rings needed for a full system refresh. This part cross-references 520221 for the same application.

Use this kit when servicing a leaking, noisy, or inefficient air conditioning system that requires replacement of the compressor and related flow-control components. The included accumulator and orifice tube support proper refrigerant management in R134a systems, while the supplied PAG Oil /150 is specified for the compressor assembly.

What It Can Address

• Loss of cooling performance from a worn compressor
• Compressor noise or internal wear
• Restricted refrigerant flow from a contaminated orifice tube
• Moisture or debris concerns in the accumulator
• Seal leakage at A/C connection points

Installation Notes

Verify vehicle fitment by year, make, model, and compressor type before installation. This kit is for systems using an orifice tube expansion device and R134a refrigerant. Replace the accumulator and O-rings during service, and follow the vehicle service manual for evacuation, oil balancing, and recharge procedures.

Quality Assurance

Four Seasons backs this Complete A/C Kit with a limited lifetime warranty. Part number 1400NK is built for application-specific HVAC service and is intended for direct replacement on the listed Buick, Oldsmobile, and Pontiac vehicles.

• Fits 1997-1998 Oldsmobile Regency, N/A
• Fits 1996-1997 Buick LeSabre, N/A
• Fits 1996-1997 Oldsmobile 88, N/A
• Fits 1996-1997 Oldsmobile LSS, N/A
• Fits 1996-1997 Pontiac Bonneville, N/A
• Fits 1996 Buick Park Avenue, N/A
• Fits 1996 Oldsmobile 98, N/A