Multiquip EE16942 Vented Gas Cap Female 3" NPT

The Multiquip EE16942 is a genuine OEM Vented Gas Cap Female 3" NPT designed for Multiquip trailer models including TRLR45H, TRLR45E, TRLR502XFH, TRLR502XFE, TRLRSG1600XFH, and TRLRSG1600XFE. As a factory-original component, EE16942 is manufactured to the same specification as the cap it replaces, ensuring a proper seal and correct venting behavior in service. Sourced directly from Multiquip, this part is the right call when you need a verified, drop-in replacement for your trailer fuel system.

Key Features

• OEM Venting Spec: — Engineered to deliver the correct venting rate for the fuel tank, preventing vacuum lock and pressure buildup that can restrict fuel flow or cause tank deformation.
• Female 3" NPT Thread: — Matches the factory filler neck thread standard directly, threading on cleanly without thread adapters or modifications to the tank opening.
• Broad Trailer Fitment: — Confirmed fit for Multiquip TRLR45, TRLR502XF, and TRLRSG1600XF trailer series in both H and E configurations.
• Fuel System Integrity: — A properly functioning vented cap allows the tank to breathe while preventing fuel spillage, keeping the fuel system running efficiently and safely across extended use.
• Fuel Safety Compliance: — Correct cap venting is a fuel system safety requirement; using an unvented or mismatched cap can create dangerous pressure conditions or allow fuel vapor to accumulate near ignition sources.

A vented gas cap serves two roles on a trailer fuel tank: it seals the filler opening to prevent fuel from escaping during transport and operation, while also allowing air to enter the tank as fuel is consumed. Without this controlled venting, a vacuum forms inside the tank that can starve the engine of fuel or cause the tank walls to collapse under negative pressure. A cap that fails to vent properly — whether through wear, damage, or an incorrect replacement — disrupts fuel delivery and can create hazardous pressure differentials in the tank.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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