Four Seasons 33133 A/C Accumulator
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Four Seasons
Accumulator

Four Seasons 33133 A/C Accumulator

Brand Four Seasons 33133
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 Female 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 [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 Chevrolet and GMC · 26 vehicles

OE direct replacement. Meets or exceeds OEM requirements for dependable service.

Aluminum construction. Lightweight body resists corrosion in demanding HVAC systems.

Complete unit. Includes the accumulator with switch port for a cleaner install.

Cross-references Bosch 16328, Dixie Electric Ltd 11366 and Febi-Bilstein 33154 for the same application. See all 64.

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Four Seasons 33133 A/C Accumulator

Four Seasons 33133 is a complete A/C accumulator for select 1989-1990 Chevrolet and GMC trucks. Built with an aluminum body and OE-style fittings, it supports proper refrigerant flow and moisture control in the HVAC system.

Key Features

  • Brand: Four Seasons Accumulator line
  • Part number: 33133
  • 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
  • Compatible with 1989-1990 Chevrolet C1500, C2500, C35, C3500, K1500, K2500, and K3500
  • Compatible with 1989-1990 GMC C1500, C2500, C3500, K1500, K2500, and K3500

Product Details

The Four Seasons Accumulator product line is built for direct-fit HVAC service where accurate dimensions and OE-style connections matter. This 33133 accumulator measures 3.500 inches in body diameter and 8.000 inches in body length, with 3/4-inch inlet and outlet fittings. It uses green O-ring sealing points and includes a switch port for systems that require that connection. This part cross-references Gates 7449 for the same application.

Common HVAC Issues It Can Address

  • Restricted refrigerant return in the A/C system
  • Moisture buildup inside the HVAC circuit
  • Leaking accumulator seals or aged O-rings
  • Incorrect fitment from worn or mismatched replacement parts
  • Loss of cooling performance on Chevrolet C1500 and GMC K2500 truck applications

Installation Notes

Verify inlet and outlet orientation, switch-port requirements, and overall dimensions before installation. This unit uses female O-ring inlet and male insert O-ring outlet connections, and mounting hardware is not included. The printed foot note indicates a swivel top/universal accumulator option is also available under Part No. 33705, with no tube kit required.

  • Fits 1989-1990 Chevrolet C1500, N/A
  • Fits 1989-1990 Chevrolet C2500, N/A
  • Fits 1989-1990 Chevrolet C35, N/A
  • Fits 1989-1990 Chevrolet C3500, N/A
  • Fits 1989-1990 Chevrolet K1500, N/A
  • Fits 1989-1990 Chevrolet K2500, N/A
  • Fits 1989-1990 Chevrolet K3500, N/A
  • Fits 1989-1990 GMC C1500, N/A
  • Fits 1989-1990 GMC C2500, N/A
  • Fits 1989-1990 GMC C3500, N/A
  • Fits 1989-1990 GMC K1500, N/A
  • Fits 1989-1990 GMC K2500, N/A
  • Fits 1989-1990 GMC K3500, N/A

Quality Assurance

Four Seasons lists this accumulator as meeting or exceeding OEM requirements, with aluminum construction and OE-style sealing surfaces for service-ready HVAC replacement on 1989-1990 Chevrolet and GMC truck applications. Part number 33133 is also referenced by multiple aftermarket catalogs for the same use.

Related reading

This part fits 26 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1990ChevroletC1500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990ChevroletC2500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990ChevroletC35N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990ChevroletC3500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990ChevroletK1500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990ChevroletK2500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990ChevroletK3500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990GMCC1500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990GMCC2500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990GMCC3500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990GMCK1500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990GMCK2500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1990GMCK3500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989ChevroletC1500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989ChevroletC2500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989ChevroletC35N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989ChevroletC3500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989ChevroletK1500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989ChevroletK2500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989ChevroletK3500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989GMCC1500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989GMCC2500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989GMCC3500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989GMCK1500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989GMCK2500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
1989GMCK3500N/AOptional swivel top or universal A/C accumulator; no tube kit required.; Accumulator
Directly replaces or cross-references 64 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 16328Dixie Electric Ltd — 11366Febi-Bilstein — 33154Four Seasons — 33133Gates — 7449Global Parts Distributors LLC — 1411306Marmon Ride Control — A5850Quality-Built — 19408UAC — RD6729CWalker Exhaust — 216784490N746616328D2167621676R4149044900071814071814A071817A151490151528151591151676151677172714207714208558208571023313302331545000577036807037347050247050387085587085711131650113175311671330148090419100041910005272447527245252724687272484327248443705024370503837232507133133713315411133133V11133154VAC2348AC2348CACD151676CWK705024E804512ED714RD6729ZGG19408