Honda Wb20Xt Carb - OEM Number: 16100-Z4H-931

The Honda WB20XT Carburetor (OEM 16100-Z4H-931) is a direct replacement fuel metering component designed for use on Honda WB20XT water pump units fitted with compatible Honda small industrial engines. It forms a critical part of the engine’s fuel delivery system, mixing air and fuel in the correct ratio to ensure efficient combustion, smooth running, and reliable starting performance.

Manufactured to OEM specifications, this carburettor is engineered for precision fuel atomisation, durability, and stable performance under varying load conditions. It is designed to operate in demanding site and utility environments where consistent engine response and reliability are essential for continuous water pumping applications.

FUNCTION AND OPERATION

• Meters and mixes fuel with air for combustion
• Regulates engine speed under varying load conditions
• Supports smooth starting and stable idle performance
• Maintains correct fuel delivery for efficient operation
• Designed for reliable performance in continuous-duty pump applications

TECHNICAL DETAILS

• OEM Part Number: 16100-Z4H-931
• Type: Carburettor assembly
• Function: Air-fuel mixture delivery system
• Application: Honda WB20XT water pump engines
• Construction: Precision-cast aluminium body with internal jets, float chamber, and throttle mechanism
• Design: OEM-calibrated carburettor for direct replacement fitment

The OEM 16100-Z4H-931 carburettor is listed as a genuine Honda replacement part used across compatible small engine configurations, including pump and utility power equipment.

TYPICAL APPLICATIONS

Suitable for a range of Honda equipment, including:

• Honda WB20XT water pumps
• Small industrial petrol engine pump units
• Site and construction water transfer equipment
• Agricultural and irrigation pump systems
• General-purpose Honda GX-series based applications (model-dependent)

IMPORTANT INFORMATION

Always confirm the correct OEM part number, engine model, and pump configuration before ordering, as carburettor jetting, throttle linkage, and mounting interfaces may vary between engine variants and serial number ranges. Incorrect carburettor specification can result in poor starting, flooding, lean running conditions, or reduced engine performance.

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery*
£11.95 or FREE for orders over £150
Orders placed before 4pm Monday to Friday will be delivered on the next business day.
Orders placed after 4pm on Friday will be delivered the following Tuesday.
*Next day delivery applies to stocked items only. Availability can be found on the product pages.

Premium Delivery*
£27.50 for delivery before 10:30am
£20.00 for delivery before 12:30pm
*Premium delivery applies to stocked items only. Availability can be found on the product pages.

For all other countries, please click here for full delivery information.

**Separate carriage charges apply to bulk products such as 205L barrels.