Four Seasons 33105 A/C Accumulator

Four Seasons 33105 A/C Accumulator

The Four Seasons 33105 A/C accumulator is a complete aluminum replacement for select GM minivan applications with rear A/C service considerations. It is built to meet or exceed OEM requirements and uses OE-style O-ring connections for a direct-fit HVAC repair.

Compatible with 1994-1995 Chevrolet Lumina APV, 1994-1995 Pontiac Trans Sport, and 1994 Oldsmobile Silhouette, this Four Seasons accumulator is a practical choice when servicing the air conditioning system on these vehicles. The Four Seasons 33105 is also identified by common cross-reference applications such as UAC RD1617C.

Key Features

• Brand: Four Seasons Accumulator line
• Part number: 33105
• Complete unit aluminum construction
• Female O-ring inlet and male insert O-ring outlet
• Switch port included; no service port
• Meets or exceeds OEM specifications
• Body diameter: 3.500 in. / 88.900 mm
• Body length: 9.000 in. / 228.600 mm
• Inlet and outlet thread size: M27x2.000

Detailed Description

The accumulator is a key part of the A/C system on the Chevrolet Lumina APV, Pontiac Trans Sport, and Oldsmobile Silhouette. It helps manage refrigerant flow on the low-pressure side of the system while providing a mounting point for the switch port used in the vehicle’s HVAC setup. This Four Seasons 33105 accumulator uses aluminum construction, OE-style female O-ring inlet and male insert O-ring outlet fittings, and includes the correct green O-ring sealing points for service work.

Four Seasons 33105 is a direct replacement style accumulator for 1994-1995 Chevrolet Lumina APV, 1994-1995 Pontiac Trans Sport, and 1994 Oldsmobile Silhouette applications. If you are replacing a leaking, restricted, or damaged A/C accumulator on these vehicles, this part number is a fitment-specific option built around the original connection style and dimensions.

What It Helps Fix

• Refrigerant leaks at the accumulator body or O-ring connections
• Moisture contamination in the A/C system after component failure
• Poor cooling caused by a restricted or saturated accumulator
• Switch-port related service issues on the HVAC assembly
• Fitment problems when replacing the original accumulator on GM minivans

Installation Notes and Tips

Verify the inlet and outlet fitting style, thread size, and switch-port configuration before installation. Replace the O-rings during service, evacuate the system, and recharge the A/C system to the vehicle manufacturer’s specifications after repairs. Mounting hardware is not included.

For fitment-specific service, confirm this part number against the vehicle’s original accumulator before ordering. Fits 1994-1995 Chevrolet Lumina APV, 1994-1995 Pontiac Trans Sport, and 1994 Oldsmobile Silhouette, with rear A/C not included in the Lumina APV and Silhouette notes.

Quality Assurance

This Four Seasons accumulator meets or exceeds OEM requirements for the listed applications. Four Seasons 33105 is built as a complete replacement unit for service-focused HVAC repair on the specified GM vehicles.