Beckett 3666U Bulkhead Locknut AF AFII 85 150 CF Oil Burner

Overview

Beckett 3666U Bulkhead Locknut – OEM Oil Burner Replacement Part

This genuine RW Beckett bulkhead locknut (MFG# 3666U) is designed to secure burner bulkhead fittings in Beckett oil burner assemblies. Manufactured for durability and precise fitment, this locknut ensures proper mounting and secure component retention in AF and AFII series burners.

Compatible With:• Beckett AF• Beckett AFII 85• Beckett AFII 150• Beckett CF

Product Features

• • Genuine Beckett OEM Part• Heavy-duty zinc-plated steel construction• Corrosion-resistant finish• Precision thread for proper fit• Ideal for burner repair and rebuild applications
• Application:Used to fasten and secure bulkhead-mounted components within oil-fired burner systems. Essential for maintaining proper alignment and safe operation during service or replacement.
• Media Compatibility:Designed for heating oil systems using No. 1 or No. 2 fuel oil.

Condition

Brand New – Factory Original Part

Perfect for HVAC technicians, oil burner service contractors, and heating system maintenance professionals needing reliable OEM hardware components.

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Product details

Part / SKU	3666U

Package includes

• Beckett 3666U Bulkhead Locknut AF AFII 85 150 CF Oil Burner

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.