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Pro-Parts 78018 Temperature Fuel Control Knob Replacement (12.5mm Shaft) for Older MH18B Mr. Heater Big Buddy Portable Propane Heaters,

4.4 (8) Write Review
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$10.99

$ 4 .99 $4.99

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About this item

  • Temperature Fuel Control Knob 78018 for Mr. Heater replacement temperature / fuel control knob for the older MH18B Mr. Heater BIG Buddy Portable Propane Heaters.
  • This knob will ONLY fit BIG Buddy heaters with the serial number MHC748000097071 and LOWER.
  • This knob has a 12.5mm OD shaft size. Please measure outside diameter of knob shaft for proper fit.
  • For use on Mr. Heater, Heat Star, and Enerco older MH18B BIG Buddy Portable Propane Heaters.
  • (*Use Part #78418 knob for heaters with the serial number MHC748000097072 and HIGHER, and all CURRENT models, where the knob has a 27mm shaft base*.)


Temperature Fuel Control Knob (12.5mm shaft) for older MH18B Mr. Heater BIG Buddy Portable Propane Heaters
Part #78018
For use on Mr. Heater, Heat Star, and Enerco older MH18B BIG Buddy Portable Propane Heaters.


gail McDonnell
2025-09-03 09:45:54
fast shipping
Freedom Builder
2025-08-10 17:58:51
Replaced the knob on not Mr heater with this and it fit perfectly.
Michele Stone
2025-08-04 14:56:19
I have the older model Buddy heater. This knob fit perfectly
Perry B.
2025-06-21 11:58:36
Perfect replacement for my 20 year old heater! Make sure you pay attention to the model and serial numbers to ensure you are ordering the right knob.
Robin DeMeyer
2025-06-17 11:37:13
Too big.
Chad Lopez
2025-06-06 10:01:45
Fit perfectly
Briana Teasdale
2025-05-26 15:29:03
Works perfect for my heater!
Big W
2025-02-12 20:23:25
Some drunk broke my Mr buddy heater this year while ice fishing and this replacement fit perfect. My heater is the dual sided one from about 15 years ago if that helps.