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Description
69W43 Furnace Flame Sensor - Exact ForLennox, Armstrong & Ducane Furnaces69W43 Furnace Flame Sensor Key Features Sensing rod detects flame presence for furnace operation Angled probe design Overall width: 4 5 8 in Features a 3 16 in male terminal for connection Durable construction for long service life Replaces Cross Reference Part Numbers 69W43 69W4301 LB 74940B LB74940B 102431 02 790 801A1 Compatibility & Fitment Direct replacement for specific furnace models from brands including: Armstrong Ducane Lennox Verify
69W43 Furnace Flame Sensor
Key Features
- Sensing rod detects flame presence for furnace operation
- Angled probe design
- Overall width: 4-5/8 in
- Features a 3/16 in male terminal for connection
- Durable construction for long service life
Replaces / Cross-Reference Part Numbers
- 69W43
- 69W4301
- LB-74940B
- LB74940B
- 102431-02
- 790-801A1
Compatibility & Fitment
- Direct replacement for specific furnace models from brands including:
- Armstrong
- Ducane
- Lennox
- Verify compatibility with your furnace model number prior to purchase.
When to Replace
- Furnace starts the ignition sequence but shuts off after a few seconds.
- Furnace control board indicates a flame sensor fault code.
- Visible carbon buildup, corrosion, or damage on the existing sensor rod.
- The ceramic insulator is cracked or broken.
Installation Tips
- Disconnect electrical power to the furnace unit before servicing.
- Avoid touching the metal rod with bare hands; handle by the ceramic base.
- Ensure the sensor is correctly positioned in the pilot or main burner flame.
- Confirm the mounting screw and wire are securely fastened.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Valet Tray
Size: 8.5" x 5.8" x 1.9", Color: Black
Perfect!
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Just lovely
Size: 8.5" x 5.8" x 1.9", Color: Orange
Purchased this several months ago and liked it, but I had received so many complements on this tray since then I had to submit this review. The tray is sturdy and put together well, and the size is exactly what was given before purchase.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
These are a good choice
Color: Black-2 Set
These are great. They are made well, look nice and are easy to move when I’m dusting.
I use these to keep perfumes, lotions and vitamins organized atop my dresser. The velvety compartments are a well sized and the layout is conducive to storing the kind of objects women or men typically store atop a dresser. I find these bins quite functional.
I feel like these were a good value. They weren’t the cheapest and they weren’t the most expensive. They look nice and feel high quality enough.
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Reviewed in the United States on July 4, 2025
★★★★★ 5
Nice and works great in my nightstand
Color: Beige
Smaller than I expected, but good quality and looks nice in my nightstand drawer. It will keep things from rolling around. Seems sturdy and I like the pinkish undertone to the beige.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Great end table organizer, Style, size, cost
Color: Brown-2 Set
Good size, very useful tray. The large compartments are laid out well. Small areas good to hold a watch, change, lip balm, etc.
Affordable price and made well, looks more expensive. Keeps "stuff" neat and clean.
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Reviewed in the United States on February 8, 2026