HomeHVAC > A/C Accumulator / Receiver DrierFour Seasons 33721 A/C Receiver Drier
Part #: 33721

Four Seasons 33721 A/C Receiver Drier

Filter Drier
⚙️ 8 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Filter Drier
🚗Fitment: BMW, 740i, 740iL, and 750iL
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Four Seasons Filter Drier 33721

The Four Seasons Filter Drier 33721 is designed specifically for BMW 740i, 740iL, and 750iL models. This A/C receiver drier plays a critical role in maintaining the efficiency and longevity of your vehicle's air conditioning system by filtering and drying refrigerant.

  • Constructed from durable aluminum material
  • Pad mount inlet and outlet fittings for secure installation
  • Includes desiccant to absorb moisture and contaminants
  • Body diameter of 5.000 inches and length of 7.500 inches
  • Gaskets and seals included for proper sealing
  • Meets or exceeds OEM specifications
  • New part, no washer or mounting bracket included

Detailed Product Description

The Four Seasons Filter Drier 33721 is an A/C receiver drier engineered to fit BMW 740i, 740iL, and 750iL vehicles. Made from aluminum, it offers corrosion resistance and durability under high-pressure conditions. The pad mount inlet and outlet fittings, both sized at 0.375 inches, ensure a secure and leak-free connection within the HVAC system. This filter drier contains a non-replaceable desiccant that effectively removes moisture and contaminants from the refrigerant, preventing damage to the A/C components. The body measures 5 inches in diameter and 7.5 inches in length, providing the correct fitment for the specified BMW models. Gaskets and seals are included to maintain system integrity during installation.

About the Four Seasons Filter Drier Product Line

The Filter Drier line by Four Seasons focuses on delivering reliable filtration and moisture removal solutions for automotive air conditioning systems. This product line is designed to meet or exceed OEM standards, ensuring compatibility and performance for specific vehicle applications such as the BMW 740i, 740iL, and 750iL. The 33721 part number represents a new, high-quality receiver drier option within this line, engineered for durability and effective system protection.

Common Issues Addressed by This A/C Receiver Drier

  • Prevents moisture buildup that can cause corrosion and system damage
  • Filters out debris and contaminants from refrigerant flow
  • Helps maintain optimal A/C system pressure and performance
  • Reduces risk of compressor failure due to contaminated refrigerant
  • Ensures longer lifespan of HVAC components in BMW 740i, 740iL, and 750iL models

Installation Notes and Tips

  • Compatible with BMW 740i, 740iL, and 750iL air conditioning systems
  • Ensure all old refrigerant is properly evacuated before installation
  • Use included gaskets and seals to prevent leaks
  • Do not reuse old washers; note that washers are not included with this part
  • Mounting bracket is not included; verify existing bracket condition before installation

Quality Assurance and Warranty

The Four Seasons Filter Drier 33721 is a new part that meets or exceeds OEM specifications for BMW 740i, 740iL, and 750iL models. It is manufactured with high-quality aluminum and includes necessary seals to ensure proper function. While specific warranty details are not provided, Four Seasons products typically adhere to industry standards for reliability and performance.

BrandFour Seasons
Part Number33721
PositionFilter Drier
Body Diameter5.000
Body Length7.500
Bracket?w/o Bracket
Connector B TypePad Mount
Connector TypePad Mount
DescriptionFilter Driers
DesiccantYes
Desiccant ReplaceableNot Replaceable
Dia. MM127.000
Fuse PlugNo
Gasket / Seals?Included
In Line Filter MaterialDesiccant
In Line Filter Outlet Fitting TypePad Mount
Inlet Filter Fitting TypePad Mount
Inlet Fitting Diameter0.375
Inlet Fitting TypePad Mount
Length MM190.500
MaterialAluminum
Meets / Exceeds OEM?Yes
Moisture Indicator WindowNo
Mounting Bracket IncludedNot Included
New or RemanNew
O-Ring A Number/Desc[24608] / Green O-Ring
Outlet Fitting TypePad Mount
Outlet IN0.375
Overall Depth IN7.500
Overall Depth MM190.500
P. R. V.?No
Pad Mountw/ Pad Mount
Service Port?w/o Service Port
Sight Glass?No
Stud?No
StyleAluminum Filter Drier w/ Pad Mount
Switch Port?w/o Switch Port
TypeW/ Pad Mount
TypeWasher Not Included

This part fits 8 vehicles. Search below:

YearMakeModelPositionNotes
1997BMW740iN/AFilter Drier
1997BMW740iLN/AFilter Drier
1997BMW750iLN/AFilter Drier
1996BMW740iLN/AFilter Drier
1996BMW750iLN/AFilter Drier
1995BMW740iN/AFilter Drier
1995BMW740iLN/AFilter Drier
1995BMW750iLN/AFilter Drier

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

11133721123759791254608314117121510073161010161010D172987191888262079872087422805833721370905537185023718508433943644782084491516453837297864538375757645383903427090557138980806888919505A78742AC2780AC2780CCWK709055ED987RD10140CRD4339CT33721

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.