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Four Seasons 33129 A/C Accumulator
| Brand | Four Seasons 33129 |
|---|---|
| Body Diameter | 3.500 |
| Body Length | 8.000 |
| Description | Accumulators |
| Dia. MM | 88.900 |
| Friction Material Attachment | w/o Service Port |
| Inlet Fitting Diameter | 3/4 |
| Inlet Fitting Type | Male Insert O-Ring |
| Inlet IN | 0.750 |
| Inlet MM | 19.050 |
| Length MM | 203.200 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Mounting Hardware? | Not Included |
| O-Ring A Number/Desc | [24222] / Spring |
| O-Ring B Number/Desc | [24672] / Green O-Ring |
| O-Ring C Number/Desc | [24650] / Green O-Ring |
| Outlet Fitting Diameter | 0.750 |
| Outlet Fitting Type | Male Insert O-Ring |
| Outlet Fraction | 3/4 |
| Outlet MM | 19.050 |
| 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, Oldsmobile, and Pontiac · 20 vehicles |
OE-spec replacement. Meets or exceeds OEM requirements for dependable service.
Aluminum construction. Lightweight body helps resist corrosion in the A/C system.
Complete unit. Includes the accumulator assembly with switch port provision.
Cross-references AMS Automotive 4548R, Four Seasons 33129 and Gates 21634 for the same application. See all 67.
Four Seasons 33129 A/C Accumulator
The Four Seasons 33129 A/C accumulator is a complete aluminum replacement built for vehicles that use a receiver-drier style accumulator in the HVAC system. It is engineered to meet or exceed OEM requirements and is listed for Buick, Cadillac, Oldsmobile, and Pontiac applications from 1991-1993.
- Brand: Four Seasons Accumulator line
- Part number: 33129
- Complete unit, aluminum construction
- Male insert O-ring inlet and outlet fittings
- Switch port included; no service port
- Meets or exceeds OEM specifications
- Direct replacement for select GM applications
Product Details
Four Seasons 33129 is an A/C accumulator designed to support proper refrigerant flow management in the air conditioning system. The aluminum body measures 3.500 inches in diameter and 8.000 inches in length, with 3/4-inch inlet and outlet connections. It includes a switch port and uses male insert O-ring fittings for the inlet and outlet, making it a practical replacement for select GM HVAC systems. This part cross-references Monroe Shocks & Struts (e.g., 172750) for the same application.
Compatible vehicle coverage includes Fits 1992-1993 Buick LeSabre, N/A; Fits 1991-1993 Buick Park Avenue, N/A; Fits 1991-1993 Cadillac DeVille, N/A; Fits 1992-1993 Oldsmobile 88, N/A; Fits 1991-1993 Oldsmobile 98, N/A; Fits 1992-1993 Pontiac Bonneville, N/A; Fits 1991-1992 Cadillac Fleetwood, N/A; and Fits 1992 Oldsmobile Custom Cruiser, N/A. The Four Seasons 33129 is also a fit for Pontiac Bonneville models noted with 8-inch or 9-inch canister accumulator configurations.
Common Replacement Reasons
- Leaking or damaged accumulator housing
- Restricted refrigerant flow through the A/C system
- Failed or aging accumulator on GM HVAC service repairs
- Switch-port related replacement during A/C system service
- Corrosion or wear on original aluminum components
Installation Notes
Verify inlet and outlet fitting style, switch-port configuration, and canister dimensions before installation. Replace O-rings during service and confirm the system is properly evacuated and recharged after installation. Mounting hardware is not included.
Quality Assurance
This Four Seasons accumulator is built to meet or exceed OEM specifications for the listed applications. The Four Seasons 33129 part number is used for direct replacement service on select Buick, Cadillac, Oldsmobile, and Pontiac vehicles.
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1993 | Buick | LeSabre | Sedan | 3.8L | V6 | N/A | Accumulator |
| 1993 | Buick | Park Avenue | — | — | — | N/A | Accumulator |
| 1993 | Cadillac | DeVille | — | — | — | N/A | Accumulator |
| 1993 | Oldsmobile | 88 | — | — | — | N/A | Accumulator |
| 1993 | Oldsmobile | 98 | — | — | — | N/A | Accumulator |
| 1993 | Pontiac | Bonneville | — | — | — | N/A | 8" Cannister; Accumulator |
| 1993 | Pontiac | Bonneville | — | — | — | N/A | 9" Cannister; Accumulator |
| 1992 | Buick | LeSabre | Sedan | 3.8L | V6 | N/A | Accumulator |
| 1992 | Buick | Park Avenue | — | — | — | N/A | Accumulator |
| 1992 | Cadillac | DeVille | — | — | — | N/A | Accumulator |
| 1992 | Cadillac | Fleetwood | — | — | — | N/A | Accumulator |
| 1992 | Oldsmobile | 88 | — | — | — | N/A | Accumulator |
| 1992 | Oldsmobile | 98 | — | — | — | N/A | Accumulator |
| 1992 | Oldsmobile | Custom Cruiser | — | 5.0L | V8 | N/A | Accumulator |
| 1992 | Pontiac | Bonneville | — | — | — | N/A | 8" Cannister; Accumulator |
| 1992 | Pontiac | Bonneville | — | — | — | N/A | 9" Cannister; Accumulator |
| 1991 | Buick | Park Avenue | — | — | — | N/A | Accumulator |
| 1991 | Cadillac | DeVille | — | — | — | N/A | Accumulator |
| 1991 | Cadillac | Fleetwood | — | — | — | N/A | Accumulator |
| 1991 | Oldsmobile | 98 | — | — | — | N/A | Accumulator |
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