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Four Seasons 33143 A/C Accumulator
| Brand | Four Seasons 33143 |
|---|---|
| Body Diameter | 3.500 |
| Body Length | 9.000 |
| Description | Accumulators |
| Dia. MM | 88.900 |
| Friction Material Attachment | w/o Service Port |
| Inlet Fitting Diameter | 3/4 |
| Inlet Fitting Type | Female O-Ring |
| Inlet IN | 0.750 |
| Inlet MM | 19.050 |
| Length MM | 228.600 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hardware? | Not Included |
| O-Ring A Number/Desc | [24650] / Green O-Ring |
| O-Ring B Number/Desc | [24612] / Green O-Ring |
| Outlet Fitting Diameter | 0.750 |
| Outlet Fitting Type | Male Insert O-Ring |
| Outlet Fraction | 3/4 |
| Outlet MM | 19.050 |
| Printed Foot Note | Swivel Top/Universal Accumulator also available Part No. [33705] - Tube kit not required. |
| Style | Complete Unit |
| Switch | w/ Switch Port |
| Switch Port Dia. IN | 0.250 |
| Switch Port Dia.MM | 6.350 |
| Type | Accumulator |
| Product line | Accumulator |
| Fits | Buick, Cadillac, and Chevrolet · 8 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable service.
Aluminum construction. Helps resist corrosion while keeping the unit lightweight.
Complete unit. Includes the accumulator body with O-ring fittings.
Cross-references Four Seasons 33143, Global Parts Distributors LLC 1411298 and Marmon Ride Control A5856 for the same application. See all 35.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 33143 A/C Accumulator
Four Seasons 33143 is a complete A/C accumulator for select Buick, Cadillac, and Chevrolet applications. It is built with an aluminum body, switch port, and OE-style O-ring fittings to support proper refrigerant flow and moisture control in the HVAC system.
The Four Seasons Accumulator line focuses on direct-fit replacement components for automotive air conditioning systems. This unit follows the listed inlet and outlet dimensions for service on vehicles that use a female O-ring inlet and male insert O-ring outlet configuration.
Key Features
- Part number 33143 A/C accumulator for HVAC service
- Aluminum construction with a complete-unit style
- Female O-ring inlet and male insert O-ring outlet
- Switch port included; no service port
- Meets or exceeds OEM requirements
- Direct-fit dimensions: 3.500 in body diameter and 9.000 in body length
- Compatible with OE-style green O-rings at the listed connection points
Detailed Description
This Four Seasons accumulator is used in automotive air conditioning systems to separate refrigerant vapor from liquid and help protect the compressor from liquid carryover. The 33143 configuration includes a switch port and the specified inlet and outlet fitting sizes, making it a practical replacement for vehicles that require this exact accumulator layout. It is listed for 1991-1993 Buick Roadmaster, 1993 Cadillac Fleetwood, 1991 Chevrolet Caprice, and 1991 Chevrolet Commercial Chassis. This part cross-references Monroe Shocks & Struts 172749 for the same application.
What This Part Helps Address
- Weak or inconsistent A/C cooling performance
- Moisture buildup inside the air conditioning system
- Compressor protection concerns caused by liquid refrigerant carryover
- Leaking accumulator connections at the inlet or outlet fittings
- Service replacement needs on vehicles with the listed accumulator design
Installation Notes and Tips
Verify the inlet and outlet fitting style, body dimensions, and switch-port configuration before installation. Replace the O-rings at the connection points with the correct green O-rings listed for this unit, and confirm the system is evacuated and recharged to the vehicle specification after service. Mounting hardware is not included.
Fits 1991-1993 Buick Roadmaster, N/A; Fits 1993 Cadillac Fleetwood, N/A; Fits 1991 Chevrolet Caprice, N/A; Fits 1991 Chevrolet Commercial Chassis, N/A.
Quality Assurance
Four Seasons lists this accumulator as meeting or exceeding OEM requirements. The aluminum construction and OE-style connection layout support accurate replacement service for the specified applications.
| Year | Make | Model | Submodel | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 1993 | Buick | Roadmaster | — | Sedan | 5.7L | V8 | N/A | Optional swivel top or universal A/C accumulator; no tube kit required.; Accumulator |
| 1993 | Buick | Roadmaster | — | Wagon | 5.7L | V8 | N/A | Optional swivel top or universal A/C accumulator; no tube kit required.; Accumulator |
| 1993 | Cadillac | Fleetwood | Base | — | — | — | N/A | Optional swivel top or universal A/C accumulator; no tube kit required.; Accumulator |
| 1992 | Buick | Roadmaster | — | Sedan | 5.7L | V8 | N/A | Optional swivel top or universal A/C accumulator; no tube kit required.; Accumulator |
| 1992 | Buick | Roadmaster | — | Wagon | 5.7L | V8 | N/A | Optional swivel top or universal A/C accumulator; no tube kit required.; Accumulator |
| 1991 | Buick | Roadmaster | — | Wagon | 5.0L | V8 | N/A | Optional swivel top or universal A/C accumulator; no tube kit required.; Accumulator |
| 1991 | Chevrolet | Caprice | — | — | — | — | N/A | Optional swivel top or universal A/C accumulator; no tube kit required.; Accumulator |
| 1991 | Chevrolet | Commercial Chassis | — | — | — | — | N/A | Optional swivel top or universal A/C accumulator; no tube kit required.; Accumulator |
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