Multiquip PS620172 Fuel Jet 0.136 (4000-5000 Ft.)

The Multiquip PS620172 Fuel Jet 0.136 (4000-5000 Ft.) is a genuine OEM component designed for the WBH-21EFP Whiteman hydraulic power buggy. This altitude-specific jet is calibrated for operation at elevations between 4,000 and 5,000 feet, ensuring the carburetor delivers the correct air-to-fuel ratio for those conditions. Using the exact OEM jet maintains engine efficiency and prevents the rich-running issues that occur when a sea-level jet is used at elevation. Sourced directly from Multiquip, PS620172 is the manufacturer-specified replacement for WBH-21EFP machines operating in high-altitude environments.

Key Features

• Altitude-Calibrated Orifice Size — The 0.136 metering diameter is precision-matched for 4,000–5,000 ft. elevation operation, delivering the correct fuel flow where thinner air reduces oxygen availability.
• Genuine OEM Specification — Manufactured to the exact Multiquip specification, ensuring the jet seats and seals correctly within the carburetor body without modification.
• Direct-Fit for WBH-21EFP — Confirmed fitment for the Whiteman WBH-21EFP hydraulic power buggy; drop-in installation into the existing carburetor circuit.
• Protects Engine Output at Elevation — A correctly sized jet prevents fuel-rich combustion, excessive carbon buildup, and power loss that result from running the wrong jet at altitude.
• Fuel System Integrity — As a carburetor metering component, using the OEM-specified jet helps maintain clean combustion and protects downstream engine components from fuel contamination and fouling.

A fuel jet is the small metering orifice inside a carburetor that controls the volume of fuel drawn into the engine's air stream. At higher elevations, air density decreases, so less fuel is needed to maintain the correct combustion mixture — a smaller jet orifice compensates for this by restricting fuel flow accordingly. When the wrong jet is installed for the operating altitude, the engine runs inefficiently: too rich a mixture causes fouled plugs, rough idle, and lost power, while sustained mismatched jetting can accelerate internal wear and increase exhaust emissions.

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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