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Holley

HOLLEY Main Jets (2)

MPN: 122-58 Catalog #: 001508858 Category: Carburetor Jets And Components Check Vehicle Fitment

Product Details

Carburetor Jet - 0.057 in ID - Number 58 - Brass - Holley Carburetors - Pair

Carburetor Jet; Standard Main Jet; 1/4-32 UNF Thread; Hole Size 0.058 in.; Pair;

These metering orifices control fuel flow into the metering system. They are rated in flow capacity cubic centimeters per minute and are changeable for tuning purposes. The shape of the entry, exit, and size determines flow. All Holley Main Jets are flow tested and then stamped with the correct number

Fitment: These metering orifices control fuel flow into the metering system. They are rated in flow capacity cubic centimeters per minute and are changeable for tuning purposes. The shape of the entry; exit; and size determines flow. All Holley Main jets are flow tested and then stamped with the correct number. Click on Catalog Product Page for complete listing of jets and sizes.

DETAILS:

Part Number 122-58 SPECS:

DETAILS:

  • Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
  • Carburetor Metering Jet
  • Carburetor Jet
  • 0.058 in. Jet Size
  • 1/4 in.-32 Thread
  • Fits Models 2010/2300/4010/4011/4150/4160/4500
  • Sizes From 40-110
  • Standard Main Jet
  • JET
  • Carburetor Jet

Part Number 122-58 SPECS:

  • Carburetor Type: Holley
  • Jet Number: 58
  • Jet Size: 0.057
  • WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
  • WARNING CA Proposition 65: Yes

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Product Specs

Brand
Holley
Part Number
122-58
Catalog Number
001508858
Product Line
Carburetor Jets and Components
Category
Fuel Delivery
Type
Carburetor Jets And Components
UPC / Barcode
090127021460
Length
5.00 in
Width
3.50 in
Height
0.55 in
Weight
0.02 lb
Ship Alone
No
Air Restricted
No

Shipping & Availability

Current status 8 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

Inventory shown: 8 available as of 6/4/2026.

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