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SKU:
NLT1Z00850
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Onan P220G Vacuum Fuel Pump 41-20OE01 for Wheel Horse 520-H 520-HC
$33.99
In Stock
$33.99
Sale price
$33.99
Regular price
This vacuum-operated fuel pump replaces 41-20OE01 on compatible Onan P220G 20 HP engines used in Wheel Horse 520-H and 520-HC tractors.
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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
- Wheel Horse 520-H with compatible Onan P220G engine
- Wheel Horse 520-HC with compatible Onan P220G engine
- Other Onan P220G equipment only when pump 41-20OE01 and port arrangement match
Product Overview
A 520-H that starts from a splash of fuel but fades under load may not be keeping the carburetor bowl full. After checking the tank vent, filter, hoses, pulse signal, and carburetor inlet, a weak diaphragm pump becomes the likely repair.
The pump uses engine vacuum pulses rather than an electric motor to draw fuel from the tank. Correct hose routing is essential: reversing the fuel or pulse connections can create a no-start even with a new pump.
Key Features & Performance
- Vacuum/pulse-operated diaphragm design
- For Onan P220G 20 HP applications
- Replaces 41-20OE01
- No separate electrical supply required
- New aftermarket fuel pump
Replaces Part Numbers
- 41-20OE01
Common Uses
- Repairing fuel starvation under load
- Replacing a leaking or hardened pump diaphragm
- Restoring fuel delivery after long storage or stale-fuel damage
Technical Specifications
- Product Type: Vacuum Fuel Pump
- Primary Application: Onan P220G 20 HP engines in Wheel Horse tractors
- Package Quantity: 1 pump
- Condition: New
- Replacement Type: Aftermarket
- Reference Number: 41-20OE01
- Operation: Engine vacuum / pulse
- Engine: Onan P220G 20 HP
- Fuel System: Carbureted gasoline
- Condition: New aftermarket
Installation & Fitment
- Work with a cool engine away from sparks
- Mark the inlet, outlet, and pulse hose before removal
- Replace brittle hose and a contaminated fuel filter
- Prime as directed and inspect every joint for leakage
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model, production date, serial number, connector, dimensions, installed options, and previous repairs can affect fitment. Compare the original component and reference information before purchase.
Frequently Asked Questions
Q: Why does the engine run briefly after priming? A: That often means fuel is not being replenished; the pump, pulse hose, filter, vent, and pickup all need checking.
Q: Can stale fuel damage this pump? A: Yes. Old gasoline can harden or swell diaphragm and check-valve materials.
Q: How do I confirm this is the correct part? A: Match 41-20OE01, P220G engine identification, mounting holes, port count and direction, hose size, and pulse connection.
Q: Is this supplied by the original equipment manufacturer? A: No. This is a new aftermarket item. Brand, model, and part numbers are used only to identify compatible applications.
Part Summary
keywords: 41-20OE01 fuel pump, Onan P220G vacuum pump, Wheel Horse 520-H fuel starvation, 520-HC fuel pump replacement, Onan 20 HP diaphragm pump
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.