Visit the Stanbroil Natural Gas Pilot Assembly Replacement Part for HHT, Majestic, Monessen, Temco, and Vermont Castings Fireplaces and StovesUsed for natural gas ONLY. Replacement of OEM Majestic SIT Pilot and HHT Pilot Assembly Part 10002264. With this unit you end up with a simple drop in replacement that should last for decades. Pilot tube length 24", thermocouple length 22. 5", thermopile length 22", and ignitor wire length 25. 5". Replacement 3 Way Pilot Assembly for HHT, Majestic, Monessen, Temco, and Vermont Castings Fireplaces and Stoves.