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HOLLEYPART NUMBER: 510-122-78

Carburetor Standard Main Jet

Name: Carburetor Standard Main Jet
Brand: HOLLEY
SKU: 510-122-78
Price: 14.87 USD
Availability: InStock

^$14⁸⁷

1 left in stock

Ships on Sep 08, 2026

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Main Jets

Carburetor Standard Main Jet

All Holley 2010, 2300, 4010, 4011, 4150, 4160 & 4500

Jet Number: 78

Jet Size: 0.089 in.

Thread Diameter: 1/4-32

The Carburetor Standard Main Jet from Holley is a carburetor jet engineered and manufactured to Holley's specifications for consistent fit and function.

Carburetor Jet Highlights:

All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500.
Sizes from 40-110.
1/4-32 Thread.
.089 in. Jet size.
Standard Main Jet.

Part TypeCarburetor Jet

BrandHOLLEY

Package Height0.6

Package Width2.2

Package Length2.7

Weight0.025 PG

Part CategoryReplacement Parts

Jet Size0.087

Thread Size (In.)1/4-32

Jet TypeGasoline

QuantitySold as a pair

Jet MaterialBrass

Part FitmentUniversal

Jet Drill Size0.089 in (2.261 mm)

Vendor Part Number122-78

Package Qty1

Package TypeEA

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