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Rochester Quadrajet, Dualjet Metering Jet 120-13-63
Rochester Quadrajet, Dualjet Metering Jet 120-13-63

Rochester Quadrajet, Dualjet Metering Jet 120-13-63

Your Price: $5.95
.063"
Part Number: 120-13-63
Availability: In Stock
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Quadrajet or Dualjet carburetor main jet. Please order by size. Price is for one jet and you will need a set of two.

SPECS:
  • Orifice: .063"
Jet Testing
To determine if you have the correct jets in your carburetor, operate your vehicle for 20 minutes at sustained speeds. Stop and pull a plug. Gray - Good, Black - move down one jet size, White - move up one jet size. Do it all over again until you get a gray plug.

This assumes your engine and electrical system is in good running order.

For moving from sea level to over 5,000 ft. reduce your jet size by .002.

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