OEX Starter Solenoid 12 Volt OS51

The OEX Starter Solenoid 12 Volt, part number OS51, is an electrical component supplied as one each for starter circuit applications. It sits within the electrical parts and engine management groups, and the 12 volt specification is the key detail to check against the vehicle’s starting system before ordering.

This solenoid is manufactured to OEM specifications and is supported by a two year warranty. For buyers comparing replacement parts, the part number OS51 and the 12 volt rating are the most useful identifiers to confirm before fitment, especially where similar solenoids may differ by terminal layout, mounting style, or duty requirements.

OEX identifies this product as a starter solenoid rather than a general relay, so it should be matched to the intended starting application only. If you are replacing a failed unit, compare the existing part number, the electrical system voltage, and the vehicle’s application details before assuming compatibility.

Key Features

• Starter solenoid, 12 volt
• Part number OS51
• Brand: OEX
• Sold individually, each
• Manufactured to OEM specifications
• Two year warranty

Specifications

• Product type: Solenoid
• Voltage: 12 volt
• Part number: OS51
• Brand: OEX
• Unit of measure: Each
• Warranty: Two years
• Product group 1: Electrical Parts
• Product group 2: Engine Management

Application and Buying Notes

When choosing a starter solenoid, the most important checks are the voltage rating, the part number, and the intended application. This unit is a 12 volt starter solenoid with part number OS51, so it should only be considered where those details align with the vehicle or the existing component already fitted.

Solenoids can look similar while still differing in internal specification, mounting arrangement, or terminal configuration. Because no vehicle list is supplied here, the safest approach is to compare the old unit’s markings and the vehicle’s starting system requirements before ordering. That is especially important if the vehicle has had previous repairs, aftermarket changes, or a non-standard replacement fitted.

The OEM specification note indicates the part has been manufactured to an original-equipment standard, which is useful when replacing a worn or failed solenoid in a standard 12 volt system. Even so, final suitability still depends on the exact application, so the part number OS51 remains the best confirmation point for a correct match.

This product is supplied as one each, so if the job calls for more than one solenoid or related electrical hardware, those items need to be ordered separately. The two year warranty provides a clear reference point for the purchase, but it does not replace a proper fitment check against the vehicle and the existing part.

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 OS51 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 SOLENOID, Unit of Measure EACH, Warranty Two Years, Product Group 1 ELECTRICAL PARTS, Part No. OS51, Brand OEX, Description OEX Starter Solenoid 12 Volt, Product Group 2 ENGINE MANAGEMENT.

OEX Starter Solenoid 12 Volt. Part number OS51 should be checked first. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number OS51, 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 solenoid 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.

Where no verified application list is available, the part number, mounting details, connector style, and published specifications should be used as the primary selection criteria.

In the absence of a verified fitment list, the safest approach is to compare the removed unit directly with the listed product details. That includes checking the housing style, pulley layout, regulator arrangement, and any visible identification numbers before supply is approved.

Compatibility note: Confirm compatibility by checking the 12 volt requirement, the existing part number OS51, and the vehicle’s application details before purchase. If you are unsure, compare the original solenoid directly or have the vehicle checked by a qualified parts interpreter or technician.

FAQ

What is this product?

It is an OEX starter solenoid with a 12 volt specification and part number OS51. For this listing, part number OS51 is the main reference point. These details should still be checked against the original unit before ordering.

Is this sold as a set?

No. The unit of measure is each, so it is supplied individually. For this listing, part number OS51 is the main reference point. These details should still be checked against the original unit before ordering.

What warranty is supplied?

It carries a two year warranty. For this listing, part number OS51 is the main reference point. These details should still be checked against the original unit before ordering.

Is the part manufactured to OEM standard?

Yes. The listed feature states it is manufactured to OEM specifications. For this listing, part number OS51 is the main reference point. These details should still be checked against the original unit before ordering.

What should I check before ordering?

Check the 12 volt requirement, the part number OS51, and the vehicle’s application details against the existing solenoid. For this listing, part number OS51 is the main reference point. These details should still be checked against the original unit before ordering.

Is a vehicle fitment list provided?

No. No fitment data is supplied here, so compatibility should be confirmed by part number and application details. For this listing, part number OS51 is the main reference point. These details should still be checked against the original unit before ordering.