If your Mr. Heater Big Buddy isn't lighting properly, this pilot assembly replacement is exactly what you need! This part #78422 (also known as F278527) fits multiple models including the popular MH18B and MH9B portable propane heaters. Installation is pretty straightforward - just follow your heater's manual and make sure to turn off the gas and disconnect the propane tank before starting. The quality matches the original equipment, so you can trust it to work reliably through many heating seasons. Whether your current pilot is damaged, corroded, or just not functioning right, this replacement will have your heater working like new again. Perfect for DIY repairs that save you money compared to buying a whole new heater. The construction feels solid and the connections fit precisely like they should. Just remember to check for gas leaks with soapy water after installation and always follow safety guidelines when working with propane equipment. Your winter camping trips, garage work sessions, and outdoor events will be much cozier with a properly functioning heater!
Free 30-day returns 
Free 30-day returns
