OEX Thermatic Fan Switch OES Europe OFS40

The OEX Thermatic Fan Switch OES Europe, part number OFS40, is an electrical switch used to control operation of electric thermo fan(s). It is listed as a switch and supplied as each, which makes it a straightforward replacement item for cooling system control where the correct application is confirmed.

This part sits in the engine management and electrical parts groups, so the important buying check is application matching rather than appearance alone. The listed brand is OEX, and the product description identifies it as a thermatic fan switch for European OES applications.

The warranty shown is two years, and the product features note a 2 year / 40,000 km warranty. As with any cooling-system switch, correct fitment is best confirmed against the part number OFS40 and the vehicle application details before purchase.

Key Features

• Controls operation of electric thermo fan(s).
• OEX thermatic fan switch for OES Europe applications.
• Part number: OFS40.
• Supplied as each.
• Covered by a two year warranty.
• Listed under electrical parts and engine management.

Specifications

• Brand: OEX.
• Product type: Switch.
• Part number: OFS40.
• Unit of measure: Each.
• Warranty: Two years.
• Product group 1: Electrical parts.
• Product group 2: Engine management.

Fitment details provided

• BMW
• BMW 3
• BMW 5
• BMW 6
• BMW 7
• BMW 3 1982
• BMW 3 1983
• BMW 3 1984

Application and Buying Notes

When replacing a thermo fan switch, the key check is whether the vehicle uses the same part number and application, because the switch is designed specifically to control electric thermo fan operation. The most useful identifiers here are OEX, OFS40, and the OES Europe description, which should be compared with the old part and the vehicle’s cooling system requirements.

The fitment data supplied includes BMW, BMW 3, BMW 5, BMW 6 and BMW 7 references, with BMW 3 applications shown across 1982 through 1992. That is useful as a guide, but the safest approach is still to confirm the exact vehicle match against the part number OFS40 before ordering, especially where cooling-system components may vary within the same model range.

Because this is an electrical control component, a correct visual match is not enough on its own. Check the connector style, sensor location, and application details already fitted to the vehicle, then compare them with the listed switch type and OE/OES Europe identification. A mismatch here can affect fan control, so careful verification is worthwhile.

The warranty is listed as two years, with the features also referring to a 2 year / 40,000 km warranty. That gives a clear ownership reference, but it does not replace the need to match the application correctly. For a cooling-related part like this, accurate fitment matters more than simply matching the brand name.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number OFS40 helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type SWITCH, Unit of Measure EACH, Warranty Two Years, Product Group 1 ELECTRICAL PARTS, Part No. OFS40, Brand OEX, Description OEX Thermatic Fan Switch OES Europe, Product Group 2 ENGINE MANAGEMENT.

OEX Thermatic Fan Switch OES Europe. Part number OFS40 should be checked first. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number OFS40, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a switch in workshop, fleet, trade, agricultural, or construction service, the listed electrical specification should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include BMW 3, BMW 3 1982, BMW 3 1983, BMW 3 1984. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

The listed warranty is Two Years. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Please confirm fitment using part number OFS40 and the vehicle application details before purchase. The supplied fitment references include BMW, BMW 3, BMW 5, BMW 6 and BMW 7, with BMW 3 applications shown from 1982 to 1992, but final suitability should always be checked against the vehicle’s existing part and cooling-system setup.

FAQ

What does this thermatic fan switch do?

It is designed to control operation of the electric thermo fan(s). For this listing, part number OFS40 is the main reference point. Published fitment references include BMW 3, BMW 3 1982, BMW 3 1983. These details should still be checked against the original unit before ordering.

What is the part number?

The part number listed is OFS40. For this listing, part number OFS40 is the main reference point. Published fitment references include BMW 3, BMW 3 1982, BMW 3 1983. These details should still be checked against the original unit before ordering.

What brand is it?

The brand listed is OEX. For this listing, part number OFS40 is the main reference point. Published fitment references include BMW 3, BMW 3 1982, BMW 3 1983. These details should still be checked against the original unit before ordering.

Is it sold as a kit or individual item?

It is supplied as each. For this listing, part number OFS40 is the main reference point. Published fitment references include BMW 3, BMW 3 1982, BMW 3 1983. These details should still be checked against the original unit before ordering.

What warranty is listed?

The warranty listed is two years, and the features also refer to a 2 year / 40,000 km warranty. For this listing, part number OFS40 is the main reference point. Published fitment references include BMW 3, BMW 3 1982, BMW 3 1983. These details should still be checked against the original unit before ordering.

What should I check before ordering?

Confirm the vehicle application and part number OFS40 against the part already fitted. The supplied fitment references include BMW, BMW 3, BMW 5, BMW 6 and BMW 7, with BMW 3 applications shown from 1982 to 1992. For this listing, part number OFS40 is the main reference point. Published fitment references include BMW 3, BMW 3 1982, BMW 3 1983. These details should still be checked against the original unit before ordering.