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254678 - Miller Vented Fuel Tank Cap 3.5 Inch with Lanyard

Packaging: 1 PER EA
$108.60/EA $71.01/1 PER EA only $71.01/EASave 35%

Usually ships within 3-5 business days

OVERVIEW

Genuine Miller Replacement Tank Cap

The Miller 254678 is a high-quality, genuine OEM replacement tank cap designed specifically for Miller engine-driven welding equipment. Maintaining the integrity of your fuel system is critical for the longevity and performance of your machinery. This cap features a robust screw-on design with a 3.5-inch diameter, ensuring a tight seal that prevents contaminants such as dust, dirt, and moisture from entering the fuel tank. Contaminated fuel can lead to clogged filters, injector issues, and costly engine repairs, making a secure cap an essential component of your maintenance regimen.

One of the critical technical features of this cap is its integrated venting system. As fuel is consumed by the engine, a vacuum can form inside the tank if air is not allowed to replace the volume of the used fuel. This vacuum can restrict fuel flow, causing the engine to sputter, lose power, or stall completely. The Miller 254678 is engineered with a precise vent that equalizes pressure, ensuring a continuous and smooth supply of fuel to the engine under all load conditions. This is particularly important for welders operating at high amperages for extended periods.

In addition to its mechanical features, this product includes an 8-inch lanyard. This simple yet effective addition secures the cap to the machine, preventing it from being misplaced during refueling operations. In busy industrial environments or remote job sites, a lost fuel cap can cause significant downtime. The lanyard ensures the cap remains with the unit at all times. This part is a direct replacement for the original equipment, guaranteeing correct thread pitch and diameter for a hassle-free installation.

Key Specifications:

  • Part Number: 254678
  • Type: Screw-On Tank Cap
  • Diameter: 3.500 Inches
  • Venting: Yes, Integrated
  • Lanyard: Yes, 8 Inches
Additional Information
----- new values below ----
Product Type:Fuel Tank Cap
Diameter:3.5 in
Mounting Type:Screw-On
Features:Vented, Lanyard Included
Lanyard Length:8 in
Brand:Miller
Packaging Description:1 Per Ea

INCLUDED

  • 1 x Miller 254678 Tank Cap
  • 1 x 8-inch Lanyard

APPLICATIONS

  • Replacement fuel cap for Miller engine-driven welders.
  • Suitable for machines requiring a 3.5-inch screw-on vented cap.
  • Prevents debris ingress in outdoor welding environments.
  • Used to replace lost or damaged caps on rental fleets and industrial equipment.

FAQ

Yes, this is a genuine Miller Electric replacement part, ensuring the correct fit and material quality for your equipment.

The cap has a diameter of 3.500 inches.

Yes, it includes an attached 8-inch lanyard to prevent loss.

Yes, the Miller 254678 is a vented cap designed to prevent vacuum buildup in the fuel tank.

The vent allows air to enter the tank as fuel is consumed. Without it, a vacuum can form, restricting fuel flow and causing the engine to stall or lose power.

This cap fits many Miller engine drives with a 3.5-inch tank opening. We recommend checking your machine's parts manual or verifying the serial number to confirm fitment.

Yes, the lanyard is a safety feature to prevent loss. You can usually attach the lanyard anchor to a nearby bolt or designated spot on the machine.

Absolutely. It is designed for industrial environments and provides a seal that helps keep rain and debris out of your fuel tank.