What igniter fits my Lennox furnace?

The correct replacement for Lennox model OEM Lennox Silicon Carbide Hot Surface Ignitor 5.25" — 87X83 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Lennox equipment which lists the model number OEM Lennox Silicon Carbide Hot Surface Ignitor 5.25" — 87X83.

My furnace will not ignite. What part is bad?

A furnace that will not ignite after the draft inducer runs typically has a failed igniter. The hot surface igniter should glow bright orange within 60 seconds. If it does not glow at all, it is cracked or burned out. If it glows weakly, it is degrading and should be replaced preventively. Average lifespan: 3 to 7 years.

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Lennox

OEM Lennox Silicon Carbide Hot Surface Ignitor 5.25" — 87X83

Name: OEM Lennox Silicon Carbide Hot Surface Ignitor 5.25" — 87X83
Brand: Lennox
SKU: LNX-87X83
Price: 29.95 USD
Availability: InStock

SKU: LNX-87X83 Brand: Lennox

$29.95 $39.95

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The 87X83 is a genuine OEM Lennox silicon carbide hot surface ignitor featuring a 5.25" lead and a receptacle-style connector with 0.093" male pins. When your Lennox furnace calls for heat, this ignitor heats to incandescence to ignite the gas burners — without a healthy ignitor, the furnace simply cannot start a heating cycle. It directly replaces Robertshaw 41-404.

Common failure symptoms: no ignition despite an audible gas valve, the furnace short-cycles or locks out, cold air from the vents, a visibly cracked or discolored silicon carbide tip, or an ignitor that fails to glow when tested.

Because silicon carbide is fragile and wears out with repeated thermal cycling, a failing ignitor is one of the most frequent no-heat callbacks in the field. Installing the OEM Lennox 87X83 guarantees the proper glow temperature, resistance value, and connector match for your equipment, protecting the control board's ignition timing and giving you dependable, safe startups season after season.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Lennox Silicon Carbide Hot S...

$29.95

Frequently Asked Questions

Does this Igniter fit my Lennox OEM Lennox Silicon Carbide Hot Surface Ignitor 5.25" — 87X83?

Yes. This is the factory-specified OEM igniter for the Lennox OEM Lennox Silicon Carbide Hot Surface Ignitor 5.25" — 87X83. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the igniter on my Lennox OEM Lennox Silicon Carbide Hot Surface Ignitor 5.25" — 87X83?

Difficulty: Medium (20–30 min)
Step 1: Turn off power and gas. Step 2: Open furnace panel. Step 3: Locate igniter near burners. Step 4: Disconnect two-wire plug. Step 5: Remove mounting screw. Step 6: Install new igniter — do NOT touch element with fingers. Step 7: Reconnect, close panel, restore power/gas.

My furnace won’t ignite. What part is bad?

Furnace won’t ignite after the draft inducer runs = failed igniter. The hot surface igniter should glow bright orange within 60 seconds. No glow = cracked/burned out. Weak glow = degrading. Average lifespan: 3–7 years. Replacement: $15–$40 DIY.

Is this igniter compatible with Bryant or Payne too?

Many Lennox parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Lennox igniter?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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OEM Lennox Silicon Carbide Hot Surface Ignitor 5.25" — 87X83

Shipping Information

Return Policy

Frequently Asked Questions