51484U Beckett Electrode Kit – For AFII Oil Burners with Up to 9" Blast Tube

The Beckett 51484U Electrode Kit is designed for AFII series oil burners using an HLX series blast tube (9" or shorter). This OEM-quality kit provides all the essential components for maintaining reliable ignition performance, ensuring long-lasting burner operation.

✅ Kit Includes

• (2) Electrode Insulator Assemblies for HLX Heads

• (2) 31891 Electrode Contacts (Spade Terminals)

• (2) 21705 Transformer Wires

• (2) 393008 Electrode Extension Rods

• (2) 3925 Electrode Rod Couplings

⚠️ Important Note

• The Beckett T501 gauge is not included with the 51484U Electrode Kit and must be purchased separately, as Beckett does not provide this gauge as part of the kit.

• The T501 gauge is essential for:

  • Setting the electrode gap and position

  • Determining the correct oil nozzle distance from the burner head on AF, AFG, AFII, NX, SF, SM, and SR burners

  • Checking firing pin length and motor-to-blower wheel gap on AFII burners

🔧 Common Symptoms Requiring Replacement

• Hard starting or failed ignition

• Weak or inconsistent burner flame

• Worn or cracked insulators

• Carbon tracking or pitting on electrode rods

💡 Quick Shopper Tips

• Verify that your AFII burner uses an HLX series blast tube that is 9" or shorter before ordering.

• Always use the T501 gauge for accurate electrode gap settings.

• If your burner has an air tube longer than 9", use the Beckett 5782 Electrode Kit instead.

❓ Frequently Asked Questions

Q: Does this kit fit Beckett AF and AFG burners?
A: No, the 51484U is specifically for AFII burners with HLX blast tubes 9" or shorter. For AF/AFG models, see Beckett 5780 or 5782 kits.

Q: Is the T501 gauge included?
A: No. The T501 gauge must be purchased separately. Beckett does not provide it in this kit.

Q: How often should I replace my electrodes?
A: Typically during annual burner service or if you notice ignition issues, cracked insulators, or carbon buildup.