OEM Carrier LP Gas Pressure Switch (HK02LB008 / HK02MB008) for Model PG8JAA048090AGJA

This is the factory OEM LP gas pressure switch for the Carrier PG8JAA048090AGJA packaged gas unit. The pressure switch monitors gas supply pressure and acts as a safety device — if inlet LP pressure falls outside the acceptable operating range, the switch opens the control circuit and locks out the furnace, preventing unsafe combustion. A failed pressure switch typically causes a no-heat condition, repeated ignition lockout, or a fault code indicating pressure switch failure. This listing covers OEM part numbers HK02LB008, HK06WC091, and HK06WC100 (bracket-mounted version).

• Specs: LP (Propane) Gas Pressure Switch | Cut-out pressure: 6.5" W.C. | Cross-reference: GFS3451-4036 | Also sold as HK02MB008 (current superseding OEM part number)
• OEM vs Generic: This is a genuine OEM Carrier factory-authorized part, calibrated to exact 6.5" W.C. cut-out tolerance. Generic switches often carry wider pressure tolerances, risking nuisance lockouts or, worse, unsafe operation on LP systems.
• Install Difficulty: 2/5 — Shut off gas supply and power before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, manometer (to verify inlet LP pressure post-install). Note: HK06WC100 variant includes a mounting bracket — confirm your application before ordering.
• Warranty & Shipping: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG8JAA048090AGJA packaged gas/electric unit. Superseding OEM part HK02MB008 is a direct drop-in replacement for discontinued HK02LB008. Cross-references HK06WC091 and HK06WC100 (w/ bracket). Always verify LP vs. natural gas application and inlet pressure spec on your unit's data plate before ordering. Need fitment confirmation? Our team is here to verify before you buy — ships today.