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SKU:
NLT1C01607
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Vacuum Fuel Pump 149-1544 149-2187 for Cummins Onan Generators
$28.99
In Stock
$28.99
Sale price
$28.99
Regular price
This aftermarket vacuum fuel pump replaces Cummins Onan 149-1544, 149-1982, and 149-2187 on compatible generator, welder, and equipment engines.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Cummins Onan generator sets using the listed pump style
- Cummins Onan engine-driven welders using the listed pump style
- John Deere 316 / 318 / 420 with compatible Onan engine configurations
- Compatible Onan-powered skid steer and industrial equipment
Product Overview
A generator that runs briefly from a primed carburetor but dies as the bowl empties may have lost fuel-pump output. Cracked pulse hose, air leaks, blocked pickup, tank venting, and a stuck carburetor inlet can produce the same symptom and should be checked.
This diaphragm pump uses engine vacuum or crankcase pulses to move fuel through compatible 1/4-inch lines. Port direction and pulse connection matter. Onan used multiple pump arrangements, so match the casting, mounting holes, hose size, and all original numbers.
Key Features & Performance
- Pulse-operated diaphragm fuel pump
- 1/4-inch fuel-line connections for compatible systems
- No separate electric pump circuit required
- Cross-references several common Cummins Onan numbers
Replaces Part Numbers
- 149-1544
- 149-1982
- 149-2187
- 149-2187-01
Common Uses
- Restoring fuel delivery to a generator that starts only on prime
- Replacing a pump with a leaking diaphragm
- Servicing an Onan-powered welder or industrial engine
Technical Specifications
- Product Type: Vacuum / pulse fuel pump
- Fuel Line Size: 1/4 in compatible hose
- Operation: Engine pulse / vacuum
- Condition: New aftermarket replacement
Installation & Fitment
- Identify the inlet, outlet, and pulse ports before connecting hoses
- Replace cracked pulse and fuel hose rather than trimming failed ends
- Keep fuel lines away from exhaust heat and moving parts
- Compare the original pump body, port direction, mounting, and part number
Compatibility Notice
Northline Parts does its best to list all known compatible models. The correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: How can I tell whether the pump is moving fuel? A: Use the equipment service procedure to check flow and pulse supply safely.
Q: Can a blocked tank vent mimic pump failure? A: Yes. A vacuum in the tank can stop fuel flow.
Q: Is this an electric fuel pump? A: No. It is a diaphragm pump driven by engine vacuum or pressure pulses.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Onan 149-1544 fuel pump, 149-2187 generator pump, Cummins Onan vacuum fuel pump, John Deere 318 Onan pump, welder fuel delivery replacement
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.