EMPI Inline Fan Thermostat for Oil Coolers - 180°F - 33-5721-0
EMPI

EMPI Inline Fan Thermostat | Air-Cooled VW Oil Coolers | 180°F Automatic 12V Fan Switch (33-5721-0)

Not currently available

Not currently available.

This part is discontinued or out at our supplier. We often have used stock, a substitute, or can fabricate an alternative.

Call (657) 438-7002 or send us your chassis number.

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$43.95
Product details
  • Vendor EMPI
  • SKU 33-5721-0
  • Barcode 707924363357
  • Fits
    • All Years|VW|Beetle
    • All Years|VW|Bus
    • All Years|VW|Karmann Ghia
    • All Years|VW|Type 3

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Description Shipping information Reviews

EMPI Inline Fan Thermostat — 180°F Automatic Electric Fan Control (33-5721-0)

The EMPI Inline Fan Thermostat puts your external oil cooler on autopilot. It automatically activates your 12V electric fan when oil temperature reaches 180°F, eliminating the need for a manual on/off switch and protecting your engine from a forgotten toggle.

Designed for versatile installation, the unit attaches directly to the inlet port of your cooler or splices into any existing 1/2" oil hose. All included fittings use a 37-degree flare for a secure, leak-free connection — the perfect finishing touch for a professional, "set-it-and-forget-it" cooling system.

Vehicle Fitment

  • VW Beetle: All years
  • VW Bus: All years
  • VW Karmann Ghia: All years
  • VW Type 3: All years

Note: Compatible with all 12V electric fans and stacked plate oil coolers.

Why Choose EMPI?

EMPI is one of the longest-established names in air-cooled Volkswagen parts. This thermostat bolts into a standard external oil-cooler setup with the correct flare fittings included.

Key Features & Benefits

  • Hands-Free Operation: Automatically switches the fan on at 180°F, so cooling never depends on remembering a manual switch.
  • Leak-Free Fittings: 37-degree flare fittings deliver a secure connection on 1/2" ID oil hose.
  • Flexible Mounting: Installs at the cooler inlet or splices inline into an existing hose.
  • Engine Protection: Maintains a consistent operating temperature and guards against overheating.

Technical Specifications

  • Activation Temp: 180°F (82°C), preset
  • Fitting Type: 37-degree flare for 1/2" ID hose
  • Mounting: Inline — cooler inlet or spliced into hose
  • Compatibility: All 12V electric fans and stacked plate coolers
  • Part Number: 33-5721-0

Frequently Asked Questions

  • At what temperature does the fan turn on? It is preset to switch your 12V electric fan on at 180°F (82°C).
  • What hose size and fittings does it use? It uses 37-degree flare fittings sized for 1/2" ID oil hose and can mount at the cooler inlet or splice into an existing line.
  • Will it work with my fan and cooler? Yes — it is compatible with all 12V electric fans and stacked plate oil coolers.

Explore Related Categories

Complete your cooling setup: Oil Cooling, Engine Parts, and All VW Air-Cooled.