What are the specs for this Flame Rollout Switch?

The correct replacement for Goodman model GUN050-2B — B1370108 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 Goodman equipment which lists the model number GUN050-2B — B1370108.

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Goodman

OEM Goodman 300°F Flame Rollout Switch for GUN050-2B — B1370108

Name: OEM Goodman 300°F Flame Rollout Switch for GUN050-2B — B1370108
Brand: Goodman
SKU: GOODMAN-13117
Price: 4.95 USD
Availability: InStock

SKU: GOODMAN-13117 Brand: Goodman

$4.95 $6.49

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Goodman B1370108 Flame Rollout Switch (300°F)

The Goodman B1370108 is a genuine OEM flame-rollout safety limit switch for the GUN050-2B gas furnace. Mounted on or near the burner assembly, this 300°F manual-reset switch trips and cuts power to the gas valve if flame "rolls out" of the burner box — a condition caused by a cracked heat exchanger, blocked flue, or plugged burners. It is a critical last line of defense against fire and CO exposure, so it should never be bypassed or jumpered.

Specifications

Trip temperature: 300°F
Type: Normally closed, opens on temperature rise
Reset: Manual (push-button)
Function: Flame rollout / burner-box safety cutoff
Fits: Goodman GUN050-2B furnace
OEM Part Number: B1370108

OEM vs. Generic

The OEM B1370108 is factory-calibrated to the precise 300°F opening point and bracket geometry this furnace requires. Because this is a life-safety component, we strongly recommend the OEM part; our generic-equivalent matches the temperature rating and terminal style for budget repairs but should only be used when spec-matched exactly.

Installation Difficulty

Rating: Easy (1/5). Cut power, slide off the two spade connectors, remove the mounting screws, install the new switch in the same orientation, and reconnect. If the old switch had tripped, always diagnose the root cause (heat exchanger, venting, gas pressure) before returning the furnace to service.

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 Goodman 300°F Flame Rollout ...

$4.95

Frequently Asked Questions

Does this Flame Rollout Switch fit my Goodman GUN050-2B — B1370108?

Yes. This is the factory-specified OEM flame rollout switch for the Goodman GUN050-2B — B1370108. 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 flame rollout switch on my Goodman GUN050-2B — B1370108?

Difficulty: Easy (10–15 min)
Step 1: Turn off power/gas. Step 2: Open furnace panel. Step 3: Locate flame sensor rod near burners. Step 4: Remove single mounting screw. Step 5: Clean rod with 400-grit sandpaper until shiny (or replace). Step 6: Reinstall and tighten. Most common furnace repair — saves $150–$300 vs technician.

My furnace lights then shuts off after a few seconds. Why?

Furnace lights then shuts off after 3–10 seconds = dirty flame sensor in 90% of cases. The sensor can’t detect flame through oxidation buildup. Fix: clean with 400-grit sandpaper (free, 15 min). If cleaning doesn’t work, replace the sensor.

Is this flame rollout switch compatible with Bryant or Payne too?

Many Goodman 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 Goodman flame rollout switch?

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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