Standard Ignition Alternator Capacitor,Radio Capacitor RC-19
Standard Ignition Alternator Capacitor,Radio Capacitor RC-19 - view 2
Standard Ignition Alternator Capacitor,Radio Capacitor RC-19 - view 3
Standard Ignition Alternator Capacitor,Radio Capacitor RC-19
Standard Ignition Alternator Capacitor,Radio Capacitor RC-19 - view 2
Standard Ignition Alternator Capacitor,Radio Capacitor RC-19 - view 3

Standard Ignition Alternator Capacitor,Radio Capacitor P/N:RC-19

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$20.99
MPN: RC-19
Item Package Quantity: 1
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Standard Ignition Alternator Capacitor,Radio Capacitor P/N:RC-19
Standard Ignition Alternator Capacitor,Radio Capacitor P/N:RC-19
$20.99

Quiet the alternator whine and pops in your speakers with the Standard Ignition Radio / Alternator Capacitor RC-19 (also written RC19). This suppression capacitor wires into the charging circuit to filter the electrical noise the alternator generates, helping keep it out of the audio system — if a failed capacitor is the source of your radio interference, this replaces it. It's a direct-fit replacement for a range of Mazda applications, including the 1989-1995 and 2003-2006 Mazda MPV, 1990-1993 Mazda B2200, 1990-1993 Mazda B2600, 1990 Mazda Protege, 1992 Mazda MX-3, 1992-1995 Mazda 929, 1994-1997 and 2000-2001 Mazda 626, and 1994-1996 Mazda MX-6. See the Buyer's Guide tab for the full list and engine details.

  • Mylar insulation: high-quality Mylar insulating materials withstand electrostatic stresses and protect the internal metal foil windings.
  • 100% tested: every unit is tested so its capacitance value meets performance specifications.
  • OEM-style connectors: for precise installation.
  • Proven supplier: built by an original-equipment ignition manufacturer serving the aftermarket since 1919.

Interchange: G303 · U1517 · RC112 · F2G866991 · FG2866991

This part cross-references / interchanges with the following part numbers:

G303, U1517, RC112, F2G866991, FG2866991, RC-19

Frequently Asked Questions

What does this capacitor do?

It wires into the charging circuit to filter the electrical noise the alternator generates, helping keep that interference out of the vehicle's radio and audio system.

Will the RC-19 fit my vehicle?

It's a direct-fit replacement for the listed Mazda applications, including the MPV, 626, 929, B2200, B2600, Protege, MX-3 and MX-6. Check the Buyer's Guide tab to confirm your exact vehicle.

Is RC-19 the same as RC19?

Yes. RC-19 and RC19 are the same manufacturer part number, written with or without the dash.

What are the signs this capacitor may need replacing?

Whine, hum, or popping through the speakers that changes with engine speed can indicate charging-system noise. Diagnose the cause first, since other components can create similar interference.

What numbers does this part interchange with?

It cross-references G303, U1517, RC112, F2G866991 and FG2866991.

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