[Lifetime Warranty] SP-KFA1009 Heater Spark Plug - Fit for 120-210K Dyna Gl Dura Heat Thermoheat Heaters - Replace VE53F DFA400T2 KFA125DGD KFA125H KFA125L KFA125WH KFA170DGD KFA170WH KFA400DGD KFA400PF2

SP-KFA1009 Heater Spark Plug

Key Features

• High-Temperature Ceramic Insulator:Features a thick ceramic core designed to withstand extreme thermal cycling and prevent electrical arcing to the heater chassis.
• Corrosion-Resistant Electrode:The spark tip is constructed from specialized alloys to maintain a sharp ignition point and resist carbon fouling.
• Precision Threading:Engineered for a secure fit within the burner assembly, ensuring consistent grounding for reliable spark generation.
• High-Output Ignition:Designed to provide a high-voltage spark capable of igniting kerosene or diesel fuel in low-temperature environments.

Replaces / Cross-Reference Part Numbers

• Primary Part Number:SP-KFA1009
• Manufacturer Substitutions:VE53F, DFA400T2
• Alternative Identification:2144-0010-00, 2144001000

Compatibility & Fitment

• Dyna-Glo:KFA125DGD, KFA125H, KFA125L, KFA125WH, KFA170DGD, KFA170WH, KFA210DGD, KFA210H, KFA400DGD, KFA400PF2
• Dura Heat:Various 125K, 170K, and 210K BTU kerosene models.
• Thermoheat:High-output forced-air heater series.
• WorkHorse & Pleasant Hearth:Specific models requiring the SP-KFA1009 specification.

When to Replace

• No Ignition:The heater fan runs and fuel is spraying, but there is no spark to ignite the fuel.
• Cracked Ceramic:Visible hairline cracks in the white ceramic insulator, which cause the spark to "leak" or short out before reaching the tip.
• Fouled Tip:Heavy carbon deposits or soot buildup that bridges the gap between the electrode and the ground.
• Eroded Electrode:The metal tip has burned away or shortened, making the gap too wide for the spark to jump.

Installation Tips

• Gap Adjustment:Before installation, verify the spark gap is set to approximately 0.140 inches (3.5mm) or as specified by the manufacturer for optimal ignition.
• Clean the Burner:Use a soft brush or compressed air to remove soot from the burner head before installing the new spark plug.
• Avoid Over-tightening:Tighten the plug until snug; over-tightening can crack the ceramic insulator or strip the threads in the burner plate.
• Wiring Inspection:Ensure the high-voltage ignition wire is firmly seated on the plug terminal and that the insulation is not melted or cracked.
• Safety Check:Always disconnect the heater from the power source and ensure the unit is cool to the touch before performing maintenance.