Air Brake Corp Switch S/light SL4 1/4NPT Male Part No. 274746

The Air Brake Corp Switch S/Light SL4 1/4NPT Male is a single switch component sold each, identified by part no. 274746 and the description Switch S/Light SL4 1/4NPT Male. It sits within the braking product group and is listed under truck braking, so it should be treated as a braking-related control item rather than a universal electrical accessory.

The key identifier in the product description is the 1/4NPT male connection. That thread detail is important when checking whether the switch will physically suit the receiving port or fitting arrangement on the truck system. Because no fitment list is provided, the part number 274746 and the thread format are the main references to confirm before ordering.

This item is supplied as a switch, brand Air Brake Corp, unit of measure each, with no warranty listed. The absence of verified vehicle applications means buyers should check the exact thread style, installation point, and system requirements against their existing part before choosing this item for replacement work.

Key Features

• Air Brake Corp switch for braking applications
• Listed description: Switch S/Light SL4 1/4NPT Male
• Part no. 274746
• Sold individually, unit of measure each
• Male 1/4NPT connection detail
• No warranty listed

Specifications

• Brand: Air Brake Corp
• Product type: Switch
• Part no.: 274746
• Description: Switch S/Light SL4 1/4NPT Male
• Connection: 1/4NPT male
• Product group 1: Braking
• Product group 2: Truck braking
• Unit of measure: Each

Application and Buying Notes

The main buying check for this switch is the 1/4NPT male thread. If the existing unit on the vehicle or braking assembly uses a different thread size, thread form, or gender, the part will not be a direct match. For that reason, compare the current component carefully against part no. 274746 and the listed description before placing an order.

This item is categorised under truck braking, so it should be matched to the correct braking circuit or control point rather than assumed to fit a wide range of vehicles. With no application list provided, it is best to verify the installation position, thread engagement, and any physical access requirements around the switch location.

No warranty is listed for this part, so it is sensible to confirm the condition of the receiving fittings, sealing surfaces, and associated components before installation. If the original issue is more than a failed switch, inspect the surrounding air or braking hardware at the same time so the replacement is not fitted into a compromised system.

When comparing replacement parts, use both the description Switch S/Light SL4 1/4NPT Male and part no. 274746. Those two details are the most reliable identifiers available here, and they are more useful than a general product name alone when checking against an existing truck braking component.

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 274746 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 No Warranty, Product Group 2 TRUCK BRAKING, Part No. 274746, Brand AIR BRAKE CORP, Description SWITCH S/LIGHT SL4 1/4NPT MALE, Product Group 1 BRAKING.

SWITCH S/LIGHT SL4 1/4NPT MALE. Part number 274746 should be checked first. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 274746, 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.

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 fitment by matching part no. 274746, the Air Brake Corp brand, and the 1/4NPT male connection to your existing braking component before ordering.

FAQ

What is this part?

It is an Air Brake Corp switch listed as Switch S/Light SL4 1/4NPT Male, part no. 274746. For this listing, part number 274746 is the main reference point. These details should still be checked against the original unit before ordering.

Is this sold as a set or individually?

It is sold each, so one unit is supplied per order quantity. For this listing, part number 274746 is the main reference point. These details should still be checked against the original unit before ordering.

What connection does it use?

The listed connection is 1/4NPT male. For this listing, part number 274746 is the main reference point. These details should still be checked against the original unit before ordering.

Does a fitment list come with this product?

No fitment applications are provided, so compatibility needs to be checked against the part number and the 1/4NPT male thread detail. For this listing, part number 274746 is the main reference point. These details should still be checked against the original unit before ordering.

What product group is it listed under?

It is listed under braking, with product group 2 shown as truck braking. For this listing, part number 274746 is the main reference point. These details should still be checked against the original unit before ordering.

Is there a warranty listed?

No warranty is listed for this part. For this listing, part number 274746 is the main reference point. These details should still be checked against the original unit before ordering.