Description
Universal receiver-drier — 3/8″ O-ring, switch & service ports, sight glass
A versatile 8″ receiver-drier with everything a custom or heavy-duty A/C build needs in one part: 3/8″ male-insert O-ring inlet and outlet, a built-in switch port for a pressure switch, a 1/4″ service port for charging and gauges, and a sight glass to check the system. It filters and dries the refrigerant while giving you the ports you'd otherwise have to add — and it cross-references a wide range of automotive, truck, and ag/industrial driers.
Clean, dry refrigerant — plus the ports you need
On the high side after the condenser, a receiver-drier filters debris, stores a reserve of liquid refrigerant, and uses desiccant to pull moisture out of the system — heading off the acid, corrosion, and ice that wreck A/C components.
What sets the 207-504 apart is that it's built for the job on any system: a switch port lets you thread in a binary or trinary pressure switch for fan and clutch control, a 1/4″ service port gives you a Schrader connection for charging and gauge readings, and a sight glass lets you eyeball the charge and moisture condition at a glance.
Know exactly what you're ordering
One drier, every connection
Filters & dries
Desiccant and filtration remove moisture and debris that would otherwise attack the compressor and expansion valve.
Integrated switch port
Thread a binary or trinary pressure switch straight into the drier for fan and compressor-clutch control — no extra tee needed.
1/4″ service port
A built-in Schrader service port for charging, evacuating, and taking gauge readings on the high side.
Sight glass
Check charge level and moisture condition at a glance through the built-in sight glass.
Universal 3/8″ O-ring
3/8″ male-insert O-ring inlet and outlet (5/8-18 thread) make it a flexible fit for custom and replacement work.
Wide interchange
Cross-references UAC, ACDelco, Four Seasons, Freightliner, Mack, and many more — see the table below.
Add the switch, harness & oil
The switch port is sized for a 3/8-24 male pressure switch. Add the switch, its harness, and oil for the recharge.
Binary pressure switch · 3/8-24 M
A 3/8-24 male binary switch threads into the drier's switch port for high/low pressure protection. Confirm your pressure settings.
Shop the switch →Pressure switch pigtail
A 2-wire pigtail harness to connect the pressure switch into your system wiring.
Shop the pigtail →Retrolube POE · 861-2112
Premium POE lubricant with UV leak-detection dye for the recharge and easy future diagnosis.
Shop the oil →Interchange & cross-reference numbers
Match your old drier against the numbers below.
| Brand | Part number(s) |
|---|---|
| UAC | RD 6166C |
| ACDelco | 1510842 · 1510820 |
| Four Seasons | 33334 |
| NAPA | 208756 · 936127 · TEM208756 · TEM936127 |
| Omega | 3713309 · 3713309AM · 3713594AM |
| Freightliner | A22144251 · A22144252 |
| Mack | 7979402492 |
| Massey Ferguson | 1018462M91 · 1618743M1 |
| Deutz-Allis | 72502208 |
| JCB | 402562 |
| AutoCar | 564252 |
| Atco | 1558308 |
| Compressor Works | 708194 · 708221 |
| Global Parts Distributors | 1411487 |
| MEI | 7120 |
| Parker | 08526803 |
| Sunair | ARD1109 |
| Visteon | 540322 |
| Panafrio | 022099 |
| AFI | 3140 |
| Frigette | 207504 |
Technical specs
Fit it right
The desiccant starts absorbing moisture as soon as the drier is opened to air, so timing matters.
Replace when open
Fit a new drier any time the system is opened, or after a leak or compressor failure.
Keep it sealed
Leave the caps on until the moment of install — the desiccant absorbs ambient humidity quickly.
Fit switch & O-rings
Install with fresh O-rings and correct flow direction; add a pressure switch to the switch port if your system uses one.
Evacuate & charge
Pull a deep vacuum, then charge to spec and verify through the sight glass.
Receiver-drier FAQ
What is the switch port for?
Which pressure switch fits?
What's the service port?
Will it fit my vehicle?
When should I replace the drier?
Shop driers & accumulators
Browse universal driers and accumulators and set your quantities in one place.
| Image | Product Name | SKU | Price | In Stock | Quantity | Add To Cart |
|---|---|---|---|---|---|---|
|
Receiver Drier 3/8 Male Insert Oring X 3/8 Male Insert Oring With Switch Port & 1/4" Service port 8" Long | 207-504 | $30.53 | In stock | ||
|
Receiver Drier RV / Motor Home 18mm X 18mm Male Insert Oring With Sevice Port, Sight Glass & Bracket | 207-961 | $28.57 | In stock | ||
|
Filter Drier Inline Male Insert O-ring 1/2" X 1/2" X 9" | 207-2008 | $34.90 | In stock | ||
|
Receiver Drier RV/ Motor Home GM W/ QD Fitting | 207-962 | $31.60 | In stock | ||
|
Mack Truck 221RD334 STANDRD | 207-1025 | $40.50 | In stock | ||
|
Receiver Drier / Motor Home 2.5 in x 6 in 18mm Male Insert Oring x 12mm QD | 207-958 | $26.37 | In stock | ||
|
Receiver Drier Hyundi Kia Toyota Inlet 5/8 - 18 Outlet 5/8 - 18 Diameter 60 (mm) Length 199 (mm) 3/8 Fuse Plug & Sight Glass | 207-1201 | $18.17 | In stock | ||
|
Accumulator Chevy Suburban 81-83 | 207-445 | $42.83 | In stock |
Match your drier before you buy
Connections, length, and ports have to match. Send us your old drier's numbers or call and we'll confirm the right fit.
Add to cart ↑ Confirm my fitmentAll manufacturer names and part numbers are trademarks of their respective owners and are listed for identification and cross-reference purposes only; their use does not imply affiliation or endorsement. This is a universal receiver-drier. Confirm connections, length, port sizes, and pressure-switch settings against your application before ordering.
