This Dometic replacement capacitor is a critical component in RV air conditioning and cooling systems. If your air conditioner won't start or compressor cycles on and off, a failed capacitor is often the culprit. This genuine OEM part restores proper electrical function to get your cooling system running reliably again.

Key Features

• 3 MFD (microfarad) capacitor rating for reliable AC performance
• Wire leads for easy connection to existing wiring harness
• 8MM stud terminal for secure mounting
• Genuine OEM Dometic part—exact factory replacement
• Direct fit for Dometic roof and wall air conditioning units
• Essential for compressor starting and run functionality

Technical Specifications

Specification	Detail
Part Number	290330670
Capacitance Rating	3 MFD
Terminal Type	Wire leads with 8MM stud
Manufacturer	Dometic
Application	RV air conditioning systems

Frequently Asked Questions

How do I know if my capacitor has failed?

Common signs include: air conditioner won't start, compressor hums but doesn't run, or system cycles on and off repeatedly. A failed capacitor prevents the compressor motor from starting properly.

Is this a direct replacement for my Dometic AC unit?

Yes—this is a genuine OEM Dometic part (290330670) designed as a direct replacement. However, verify your unit's documentation or contact our support team to confirm compatibility with your specific model before ordering.

Can I install this capacitor myself?

Capacitors store electrical charge and can be dangerous. We recommend having a qualified RV technician handle installation. Always disconnect power before working on electrical components.

Why Choose Elkhart RV Parts

We specialize in hard-to-find Dometic replacement parts for RV owners who need exact OEM components. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock genuine Dometic parts and provide expert support to help you identify and install the right component for your rig.