it provides exact fitment and terminal alignment

This kit is a direct OEM replacement part

For R410A applications

For multi-tap or higher voltage requirements

Modine 3H0346700004 Conversion Kit 30067439-890 it provides exact fitment andThe Modine 3H0346700004 is a professional grade Natural Gas to Propane (LP) conversion kit engineered specifically for Modine unit heaters. This kit allows for precise manifold pressure adjustments and orifice replacement to ensure stoichiometric combustion when switching fuel sources. As the direct field replacement and cross reference for Modine 28046, this kit maintains the structural integrity and safety parameters of the original burner assembly.