OEM replacement motor run capacitor for Coleman Mach 8633, 9213-877, select 49000 Series, and 47000 Series Mach 8 rooftop air conditioners. Cylindrical form factor, 40 microfarads, 370V AC, 50/60 Hz — maintains steady motor current and protects against voltage fluctuation during AC operation.
The 1499-5721 is the OEM replacement motor run capacitor for Coleman Mach 8633, 9213-877, select 49000 Series, and 47000 Series Mach 8 rooftop RV air conditioners. Run capacitors are a serviceable wear component in AC units — they store and release electrical energy to maintain steady current to the fan motor during operation, stabilize motor speed, and reduce the electrical stress that leads to premature motor wear.
This capacitor is rated at 40 microfarads (MFD) ±5% and 370V AC, and is compatible with both 50 Hz and 60 Hz systems. It shares the same cylindrical form factor and overall dimensions as other capacitors in the 1499-57xx series — 1-15/16" diameter, 4-1/8" body height, and 4-5/8" total height including terminals — but the 40 MFD rating makes it specific to its listed models only. Using the correct MFD-rated capacitor is critical; even a close value substitution can cause the motor to run inefficiently, draw excess current, or fail prematurely.
Common signs of a failing run capacitor include the unit struggling or refusing to start, a humming noise with no cooling output, the system overheating and tripping off shortly after startup, or a visible bulge or fluid leak on the capacitor body. Confirm the original capacitor's MFD value before ordering.
40-microfarad (±5%) run capacitor rated at 370 volts AC — must match the MFD of the original capacitor being replaced
1-15/16" diameter × 4-1/8" body / 4-5/8" total height — direct drop-in replacement for all compatible models listed below
Rated for both 50 Hz and 60 Hz AC power systems
Backed by a 90-day limited manufacturer's warranty
The microfarad (MFD or µF) rating on the replacement capacitor must match the original capacitor exactly. Installing a different MFD value — even a close one — can cause the motor to run at the wrong speed, draw excess current, overheat, or fail prematurely. The 1499-5721 is rated at 40 MFD. Verify this matches the label on the original capacitor before installing.
Disconnect all power to the unit before inspecting or replacing the capacitor.
Disconnect and lock out all electrical power to the air conditioner before beginning replacement. Run capacitors can retain a charge even after power is removed — discharge the capacitor through an appropriate resistor before handling. Note wire connections before removing the old capacitor and reconnect the new unit in the same configuration. Restore all assemblies before reapplying power and run-testing the system.