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Distributor Cap

Critical For Operation

Ignition System

Houses the rotor and connects to the spark plug wires, distributing spark to each cylinder.

The distributor cap covers the distributor rotor and contains terminals for each spark plug wire, directing the high-voltage current to the correct cylinder in the firing order.

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Typical part cost
$20–$60🔒
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Typical labor cost
$50–$150🔒
🛣️
Typically lasts
80,000–150,000 mi
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Or about
5.0–10.0 years
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DIY difficulty
4/10

⚠️ Owners Often Notice

If the Distributor Cap is starting to fail, these are the signs owners most commonly report before it gets worse:

Engine misfires
Poor engine performance
Rough idling
Hard starting
Check engine light
Loss of power

Related Services

Services commonly performed on or around this part.

Replace Distributor Cap

No standard interval on file

Clean Distributor Cap

No standard interval on file

Inspect Distributor Cap

No standard interval on file