Product Overview:

The Lennox 45M44 (45M4401) Clean Cut oil pump, manufactured by Beckett as model 21844U, is designed to deliver consistent and precise fuel flow in oil-fired heating systems. This OEM replacement pump provides dependable oil delivery while minimizing after-drip through Beckett’s Clean Cut solenoid design. Supplied without a PD timer, it is intended for systems that do not require delayed oil cutoff, making it a direct-fit solution for compatible Lennox oil burners.

Built for durability and stable operation, this pump supports adjustable nozzle pressure from 100 to 200 PSI, allowing proper tuning for optimal combustion efficiency and burner performance. It is commonly used in residential and light commercial oil heating applications where accurate pressure control and clean shutdown are critical.

Key Features:

Clean Cut solenoid design helps reduce oil after-drip and improves combustion reliability
Adjustable nozzle pressure range from 100 to 200 PSI
Supplied without PD timer for systems that do not require timed shutoff
OEM-grade construction for direct replacement and long service life
Designed for consistent fuel delivery in oil-fired burners

Specifications:

Brand: Lennox
Manufacturer: Beckett
Lennox Catalog Number: 45M44
Lennox Part Number: 45M4401
Beckett Model Number: 21844U
Product Type: Clean Cut Oil Pump
PD Timer: Not included
Nozzle Pressure Range: 100–200 PSI
Application: Oil-fired heating systems

Compatibility and Application:

This Clean Cut pump is engineered for use in compatible Lennox oil burners and systems requiring a Beckett-style pump without a PD timer. Always verify part numbers, pressure requirements, and burner compatibility before installation to ensure proper fit and operation.

Why Choose This Part:

Using a genuine Lennox-specified replacement oil pump helps maintain proper burner operation, stable flame characteristics, and long-term system reliability. The Beckett 21844U Clean Cut pump offers precise pressure control and dependable shutoff, making it a trusted choice for technicians and homeowners servicing Lennox oil heating equipment.