Contact Us
Home
Blog
Technical
My Account
Login
Register
search
0
$0
Carburetor Parts
Applications Make & Model
Scroll to see more
Aero Coach
Alfa Romeo
American Bantam
American General
American LaFrance
American Motors Nash Rambler
Auburn
Audi
Austin
Autocar
Available Truck
BMW
Bristol
Buick
Cadillac
Checker
Chevrolet
Chevrolet/GMC Trucks
Chrysler
Cortina
Desoto
Dodge
Dodge Truck
Edsel
Federal Truck
Fiat
Ford/Mercury
Ford Truck
Goliath
Graham Paige
Hall Scott
Hillman
Honda
Hudson
Hupmobile
I.H.C. International
Innocenti
Jaguar
Jeep/Willys
Kaiser Frazer
Lafayette
Lancia
LaSalle
Latham Supercharger
Legonda
Lincoln
Lotus
Mazda
Mercedes
MG
Mini
Morgan
Morris
Nissan/Datsun
Oldsmobile
Opel
Packard
Plymouth
Plymouth Arrow
Pontiac
REO
Riley
Rover
Stewart
Studebaker
Studebaker Truck
Terraplane
Toyota
Triumph
Vanden Plas
Volvo
White
Wolseley
by Carb Types
Aisan 2 Barrel
Carter
Edelbrock 4 Barrel
Ford Autolite Motorcraft
Hitachi
Holley
IHC
Keihin
Kingston
Marvel Schebler
Mikuni Solex
Mercarb
Nikki
Rochester
Solex
Stromberg
SU
Weber
Zenith
Zenith Stromberg
by Part Type
Accelerator Pump
Ball Stud
Brass Fittings
Bushings
Carburetor Kits
Clean Out Plugs
Clips & Retainers
Electric Choke Conversion Kits
Fuel Filters
Floats
Gaskets
Idle Mixture Screws
Check Balls & Check Weights
Fuel & Vacuum Hose
Jets & Metering Rods
Needle and Seat
Power Valves & Jets
Pull-Off
Rods & Linkage
Rubber Caps
Screws
Thermostats
Throttle Position Sensors and Solenoids
Float Pins
Springs
Marine
Acadia
Aero
Aeroceanic Motors
Aquanautics
Chris Craft
Chrysler Marine
Chrysler Outboard
Clinton Outboard
Crosley Marine Carburetor Parts
Crusader Marine Carburetor Parts
Daytona
Dearborn
Ford Marine
Gray Marine
Grumman Allied
Holley Universal
Johnson Evinrude Marine Outboard
Kermath Marine
Kiekhaefer Carburetor Parts
Kohler
Lathrop Marine
Marine Chokes
Medalist Marine
Mercury Marine
Mercury Marine Outboard
Mercury Mariner
Montgomery Ward Sea King Outboard Parts
Nordberg Marine
Oldsmobile Marine
OMC Marine Parts
Outboard Motors
Owens
Palmer Marine
Pleasure Craft
Redwing Marine
Revley Marine
Salmon Stiles
Scripps Marine
Tillotson Marine Outboard
Universal Motors
Volvo Penta
Yamaha Outboard
Ag & Industrial
Scroll to see more
Acadia
Allis Chalmers
American Tractor
Automatic Transportation Company
Avco
Baker
Bardco
Bay City
Buda
Buffalo Springfield
Burmeister Wain
Butler Bin
Case
Caterpiller
Champ Lift Truck
Clark Agriculture
Chicago Pneumatic
Chrysler Industrial
Climax Engineering
Clinton
Clyde Iron Works
Cockshutt
Continental
Crosley
Davey
Divco
Duplex
Earthmaster
Easthope Brothers
Eaton Corporation
Elwell Parker Company
Fairbanks Morse
Fairmont
Fate Root Heath
Federal Machine
Ford
General Industrial
Gibson
Gordon Smith
Hercules
Hobart Brothers
Hollingsworth
Hough
Holtkamp
Huber
Hyster
IHC Carburetor Parts
Ingersoll Rand Industrial
Intercontinental
Jacques
Jaeger
John Deere Tractor
Joy Manufacturing
Kaiser Industrial
Kalamazoo Railroad
Kohler Industrial
Kurtz Root
Leroi
Lincoln Electric Industrial
Lunnenberg
Lycoming Industrial
Massey Ferguson
Mercury Manufacturing
Miller Applications
Minneapolis Moline
Motor
Motoresearch
National Farm Agriculture
New Holland
New Idea Farm Equipment
Novo
Oliver Carburetor Parts
Onan Industrial Carburetor Parts
Owatonna
Palmer
Perkins
Pettibone
Pioneer Agriculture & Industrial
Railcar
Ready Power
Redwing
Reiner
Robinson Machinery
Russell Agriculture & Industrial
Schramm
Seagrave
Service Caster
Sullair
Tenant
Thermo King
Thew Shovel
Toro
Towmotor
Toyota Forklift
Transicold
Transitier
Universal Motors
U.S. Motors
Volvo
Western Gear
White Motors Truck Carburetor Parts
Winpower
Wisconsin Motors
Waukesha Industiral
Yale and Towne
Odds & Ends
Carburetors
Injectors
Acura Injector Parts
Alfa Romeo Injector Parts
Audi Injector Parts
BMW
Buick
Cadillac Injector Parts
Chevrolet
Chevrolet Truck
Chrysler
Daewoo
Daihatsu
Dodge Injector Parts
Dodge Truck
Eagle Injector Parts
Fiat
Ford Injectors
Ford Truck
GMC
Geo
Honda
Hyundai Injector Parts
Infinity Injector Parts
Isuzu
Jaguar
Jeep
Kia Injector Parts
Land Rover Injector Parts
Lexus
Lincoln Injector Parts
Mazda Fuel Injector Parts
Mercedes Benz
Mercury Fuel Injector Parts
Mercury Marine Fuel Injector Parts
Merkur
Mini
Mitsubishi Fuel Injector Parts
Nissan Injector Parts
Oldsmobile
OMC Marine Injector Parts
Plymouth Injector Parts
Pontiac Fuel Injector Parts
Porsche Injector Parts
Renault
Rover
Saab Injector Parts
Saturn
Scion
Subaru
Suzuki
Toyota
Volkswagen Fuel Injector Parts
Volvo Injector Parts
Volvo Penta Injector Parts
Yamaha Outboard
Injector Cleaning
Manuals
Aisan Carburetor Manual
Carter Carburetor Manuals
Ford, Autolite, Motorcraft Manuals
Holley Carburetor Manuals
Nikki Carburetor Manuals
Stromberg Carburetor Manuals
Home
Carburetor Parts
by Carb Types
Ford Autolite Motorcraft
2100 2 Barrel
Autolite, Holley, & Motorcraft Hi Performance Metering Jets 120-40
Autolite, Holley, & Motorcraft Hi Performance Metering Jets 120-40
Autolite, Holley, & Motorcraft Hi Performance Metering Jets 120-40
15
Review(s)
5
0
5
Your Price:
$5.95
1/4" thread
Part Number:
120-40
Availability:
In Stock
Choose Options
Holley Jets 120-40
*
Holley Jets 120-40
.040
.041
.042
.043
.044
.045
.047
.048
.049
.050
.051
.052
.053
.054
.055
.056
.057
.058
.059
.060
.061
.062
.063
.064
.065
.066
.067
.068
.069
.070
.071
.072
.073
.074
.075
.076
.077
.078
.079
.080
.081
.082
.083
.084
.085
.086
.087
.088
.089
.090
.091
.092
.093
.094
.095
.096
.097
.098
.099
Put me on the Waiting List
Quantity
+
-
Add to Cart
Write a Review
Email a friend
Description
Customer Reviews
Price is for one jet.
Holley jets. In addition to Holley, these jets can be used on some of the early Autolite 4100 carburetors as well as the early Motorcraft 2100 carburetors and the Holley 1904 1 barrel carburetors. The later (after 1963)
Motorcraft 2100 & 4100 use this jet
. Includes the Holley 2100, 2 barrel carburetor
Dos not fit the 2280, or 6280 2 barrel.
Threaded end: 1/4"
Don't ruin your engine. Printed specifications for jets were printed many years before the introduction of ethanol so you need to use trial & error to get the correct jet size. Test by looking at your spark plugs. Gray burning plugs are good, black is too rich, white is too lean. Change 1, or 2 jets sizes and repeat the test.
These jet sizes assume 0-5000 feet in elevation. For 5000-10000 reduce by 2, for 10000-15000 reduce by 4.
Some Holley jets were marked using 3 digits. Example 630 would equate to .063 in our list.
Also fits these Holley carburetors.
94
847
1904
1920
1940
2100
4000
4150
4160
Rating Snapshot
Select a row below to filter reviews.
5 Stars
14
4 Stars
1
3 Stars
0
2 Stars
0
1 Stars
0
4 Stars
Clear Filter
×
Average Customer Ratings
4.9
View All Reviews
hobbyist
Very nice jets. Shipped with care. Love all the supporting manuals and videos you have. Best in the business!
Did you find this helpful?
5 of 5
Found Helpful
Reviewed by:
Jim Anderson
from Lake Villa, IL on 6/17/2013
5
Great Service
Not everything has been replaced by computers just yet, good to have service after the sale if needed.
Did you find this helpful?
2 of 2
Found Helpful
Reviewed by:
Ted Peterson
from Waterloo on 4/23/2016
5
Jets
I received the carb jets. Havnt installed them yet but am pleased with being able to source these rarer jets.
Did you find this helpful?
2 of 2
Found Helpful
Reviewed by:
Wes Clarke
from Dawson Creek BC on 6/25/2015
5
Works for me
Purchased to increase primary jet size in my Autolite 4100 to accommodate ethanol fuels. Seems to be working fine. Thanks Mike!
Did you find this helpful?
1 of 1
Found Helpful
Reviewed by:
Bill
from Chesapeake, VA on 10/30/2015
5
Jets
Got a cple of the 0.04=51 jets from Mike. They came in fast, looked awesome and are performing very nicely. Nice parts! Thanks
Did you find this helpful?
1 of 1
Found Helpful
Reviewed by:
Yvan Alleau
from Corvallis, Oregon on 1/12/2014
5
Boss
Always fast and perfect
Did you find this helpful?
Reviewed by:
Art Jordan
from Julian on 11/2/2020
5
Jets
Ordered these jets and some gaskets. Remarkably fast and cost effective shipping and great quality products!
Did you find this helpful?
Reviewed by:
Maurice Fox
from Olympia, WA on 9/6/2020
5
carb jets
These jets are OEM quality in fit and finish. The phone staff was courteous and efficient. However, these are pricey. I bought a second set of jets from another company for half the price, and same quality. Still a good company to get parts from though, they just need to work on their shipping prices.
Did you find this helpful?
0 of 1
Found Helpful
Reviewed by:
ken
from pittsburgh PA on 3/26/2020
4
Tom Terrific
Jets just fine but too lean for my dual 4bbls, put 45s back in.
Did you find this helpful?
Reviewed by:
Thomas
from Butte on 8/11/2019
5
mr.
Large selection of jets to choose from, quick delivery, and a perfect fit. Excellent source for my needs.
Did you find this helpful?
Reviewed by:
richard
from louisville, ky on 8/22/2018
5
Load More
Related Items
Item In Cart
Plastic Choke Nut 22-28
In Stock
Part Number
22-28
(16)
$5.95
Add To Cart
Item In Cart
Motorcraft 2100 4100 Diaphram Pump Assembly - AP279
In Stock
Motorcraft 2100 Diaphragm
Part Number
AP279
(43)
$7.95
Select Options
Item In Cart
Dashpot Assembly - 85-900B
Out of Stock
Part Number
85-900B
(35)
$23.95
Add To Cart
Item In Cart
Autolite & Motorcraft Carburetor Main Jet Assortment
In Stock
5/16" thread 1100, 1101, 2100, 2150, 4100, 4300 4350
Part Number
120-4A
(5)
$55.00
Select Options
Browse Similar Items
Carburetor Parts
>
by Carb Types
>
Holley
>
4150 4160 4 Barrel
Carburetor Parts
>
by Carb Types
>
Holley
>
1904 1 Barrel
Carburetor Parts
>
by Carb Types
>
Holley
>
94, 2100, AA-1 2 Barrel
Carburetor Parts
>
by Carb Types
>
Holley
>
1940, 1945, 6145 1 Barrel
Carburetor Parts
>
by Carb Types
>
Holley
>
2140, 4000 4 Barrel Parts
Carburetor Parts
>
by Carb Types
>
Holley
>
847 1 Barrel
Carburetor Parts
>
by Part Type
>
Jets & Metering Rods
Carburetor Parts
>
by Carb Types
>
Ford Autolite Motorcraft
>
2100 2 Barrel
>
Jets
Carburetor Parts
>
by Carb Types
>
Holley
>
2209, 2210, 2245 2 Barrel
Carburetor Parts
>
by Carb Types
>
Holley
>
1920 1 Barrel
Carburetor Parts
>
by Carb Types
>
Holley
>
2300 2 Barrel
Carburetor Parts
>
by Carb Types
>
Ford Autolite Motorcraft
>
1250 1 Barrel
Carburetor Parts
>
by Carb Types
>
Ford Autolite Motorcraft
>
4100 4 Barrel
>
Metering Jets
Recently Viewed Items
Turn History Off
[history_item_name]
[ITEMPRICE]
[ITEMPRICE]
[ITEMSALEPRICE]
Sale
Clear
×
Can't find what you need?
Contact Us
TOP
Categories
Carburetor Parts
Applications Make & Model
Aero Coach
Alfa Romeo
American Bantam
American General
American LaFrance
American Motors Nash Rambler
Auburn
Audi
Austin
Autocar
Available Truck
BMW
Bristol
Buick
Cadillac
Checker
Chevrolet
Chevrolet/GMC Trucks
Chrysler
Cortina
Desoto
Dodge
Dodge Truck
Edsel
Federal Truck
Fiat
Ford/Mercury
Ford Truck
Goliath
Graham Paige
Hall Scott
Hillman
Honda
Hudson
Hupmobile
I.H.C. International
Innocenti
Jaguar
Jeep/Willys
Kaiser Frazer
Lafayette
Lancia
LaSalle
Latham Supercharger
Legonda
Lincoln
Lotus
Mazda
Mercedes
MG
Mini
Morgan
Morris
Nissan/Datsun
Oldsmobile
Opel
Packard
Plymouth
Plymouth Arrow
Pontiac
REO
Riley
Rover
Stewart
Studebaker
Studebaker Truck
Terraplane
Toyota
Triumph
Vanden Plas
Volvo
White
Wolseley
by Carb Types
Aisan 2 Barrel
Carter
Edelbrock 4 Barrel
Ford Autolite Motorcraft
Hitachi
Holley
IHC
Keihin
Kingston
Marvel Schebler
Mikuni Solex
Mercarb
Nikki
Rochester
Solex
Stromberg
SU
Weber
Zenith
Zenith Stromberg
by Part Type
Accelerator Pump
Ball Stud
Brass Fittings
Bushings
Carburetor Kits
Clean Out Plugs
Clips & Retainers
Electric Choke Conversion Kits
Fuel Filters
Floats
Gaskets
Idle Mixture Screws
Check Balls & Check Weights
Fuel & Vacuum Hose
Jets & Metering Rods
Needle and Seat
Power Valves & Jets
Pull-Off
Rods & Linkage
Rubber Caps
Screws
Thermostats
Throttle Position Sensors and Solenoids
Float Pins
Springs
Marine
Acadia
Aero
Aeroceanic Motors
Aquanautics
Chris Craft
Chrysler Marine
Chrysler Outboard
Clinton Outboard
Crosley Marine Carburetor Parts
Crusader Marine Carburetor Parts
Daytona
Dearborn
Ford Marine
Gray Marine
Grumman Allied
Holley Universal
Johnson Evinrude Marine Outboard
Kermath Marine
Kiekhaefer Carburetor Parts
Kohler
Lathrop Marine
Marine Chokes
Medalist Marine
Mercury Marine
Mercury Marine Outboard
Mercury Mariner
Montgomery Ward Sea King Outboard Parts
Nordberg Marine
Oldsmobile Marine
OMC Marine Parts
Outboard Motors
Owens
Palmer Marine
Pleasure Craft
Redwing Marine
Revley Marine
Salmon Stiles
Scripps Marine
Tillotson Marine Outboard
Universal Motors
Volvo Penta
Yamaha Outboard
Ag & Industrial
Acadia
Allis Chalmers
American Tractor
Automatic Transportation Company
Avco
Baker
Bardco
Bay City
Buda
Buffalo Springfield
Burmeister Wain
Butler Bin
Case
Caterpiller
Champ Lift Truck
Clark Agriculture
Chicago Pneumatic
Chrysler Industrial
Climax Engineering
Clinton
Clyde Iron Works
Cockshutt
Continental
Crosley
Davey
Divco
Duplex
Earthmaster
Easthope Brothers
Eaton Corporation
Elwell Parker Company
Fairbanks Morse
Fairmont
Fate Root Heath
Federal Machine
Ford
General Industrial
Gibson
Gordon Smith
Hercules
Hobart Brothers
Hollingsworth
Hough
Holtkamp
Huber
Hyster
IHC Carburetor Parts
Ingersoll Rand Industrial
Intercontinental
Jacques
Jaeger
John Deere Tractor
Joy Manufacturing
Kaiser Industrial
Kalamazoo Railroad
Kohler Industrial
Kurtz Root
Leroi
Lincoln Electric Industrial
Lunnenberg
Lycoming Industrial
Massey Ferguson
Mercury Manufacturing
Miller Applications
Minneapolis Moline
Motor
Motoresearch
National Farm Agriculture
New Holland
New Idea Farm Equipment
Novo
Oliver Carburetor Parts
Onan Industrial Carburetor Parts
Owatonna
Palmer
Perkins
Pettibone
Pioneer Agriculture & Industrial
Railcar
Ready Power
Redwing
Reiner
Robinson Machinery
Russell Agriculture & Industrial
Schramm
Seagrave
Service Caster
Sullair
Tenant
Thermo King
Thew Shovel
Toro
Towmotor
Toyota Forklift
Transicold
Transitier
Universal Motors
U.S. Motors
Volvo
Western Gear
White Motors Truck Carburetor Parts
Winpower
Wisconsin Motors
Waukesha Industiral
Yale and Towne
Odds & Ends
Carburetors
Injectors
Acura Injector Parts
Alfa Romeo Injector Parts
Audi Injector Parts
BMW
Buick
Cadillac Injector Parts
Chevrolet
Chevrolet Truck
Chrysler
Daewoo
Daihatsu
Dodge Injector Parts
Dodge Truck
Eagle Injector Parts
Fiat
Ford Injectors
Ford Truck
GMC
Geo
Honda
Hyundai Injector Parts
Infinity Injector Parts
Isuzu
Jaguar
Jeep
Kia Injector Parts
Land Rover Injector Parts
Lexus
Lincoln Injector Parts
Mazda Fuel Injector Parts
Mercedes Benz
Mercury Fuel Injector Parts
Mercury Marine Fuel Injector Parts
Merkur
Mini
Mitsubishi Fuel Injector Parts
Nissan Injector Parts
Oldsmobile
OMC Marine Injector Parts
Plymouth Injector Parts
Pontiac Fuel Injector Parts
Porsche Injector Parts
Renault
Rover
Saab Injector Parts
Saturn
Scion
Subaru
Suzuki
Toyota
Volkswagen Fuel Injector Parts
Volvo Injector Parts
Volvo Penta Injector Parts
Yamaha Outboard
Injector Cleaning
Manuals
Aisan Carburetor Manual
Carter Carburetor Manuals
Ford, Autolite, Motorcraft Manuals
Holley Carburetor Manuals
Nikki Carburetor Manuals
Stromberg Carburetor Manuals
Menu Links
Home
Blog
Technical
My Account
×
Store Login
Email
Password
Log in to my account
Reset my password