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Holley 0-1850S 600 CFM Classic Holley Carburetor

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#42501850S

Holley 0-1850S 600 CFM Classic Holley Carburetor

Name: Holley 0-1850S 600 CFM Classic Holley Carburetor
Brand: Holley
SKU: 42501850S
Price: 441.95 USD
Availability: InStock
Rating: 4.9 (17 reviews)

17 Reviews

5 Questions

The universal calibration makes for easy bolt-on performance
Includes vacuum secondaries for use on wide variety of vehicles
An ideal performance upgrade for stock to mildly modified vehicles

$441.95

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$491.95

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Product Summary

Universal Fit, 4-Barrel Carburetor Barrels, 600 CFM CFM

The universal calibration makes for easy bolt-on performance
Includes vacuum secondaries for use on wide variety of vehicles
An ideal performance upgrade for stock to mildly modified vehicles
Carb is 100% wet-flow tested by Holley technicians to assure it arrives ready to run
Features a vibratory polished aluminum for good looks, weight savings and long lasting shine

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Key Specs

Carburetor Barrels	4-Barrel
Fuel Type	Gasoline
Choke Type	Manual
CFM Range	600-699 CFM
CFM	600 CFM

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Need To Know

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Holley 0-1850S Details

One of the most trusted carburetors of all times -the 1850! Its 600 CFM of airflow, vacuum secondaries, single fuel inlet and mechanical choke makes it amazingly universal. The 1850S has a shiny finish that will make you proud to pop the hood on your ride. Don't trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's.

Vibratory polished for good looks
Performance upgrade for stock to mildly modified vehicles
Universal calibration for easy bolt-on performance
Manual choke (cable actuated - hand controlled) for precise cold start control
Vacuum secondaries for use on wide variety of vehicles. Compensate for all vehicle weights, gearing & transmissions to allow smooth opening of secondaries.
Single feed fuel inlet for easy installation
Ford A/T kickdown
Power valve blow-out protection
100% wet-flow tested by Holley technicians to assure it arrives ready to run!

Charts

Installation Instructions (PDF)

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Holley October Promo 10% Off Select Parts Sale

Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.

Guides & Documents

Carburetors Installation Instructions (42501850S)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Holley 0-1850S Specifications

KEY SPECS
MFG. Part #	0-1850S
Brand	Holley
Carburetor Barrels	4-Barrel
Fuel Type	Gasoline
Choke Type	Manual
CFM Range	600-699 CFM
CFM	600 CFM
Carburetor Flange Type	4-Barrel Square Bore
Finish	Shiny
Material Type	Aluminum
Color	Silver
Secondary Type	Vacuum
Fuel Inlet Type	Single
Gasket(s) Included	Yes
New or Remanufactured	New
Throttle Linkage Type	Universal
Supercharged Application	No

GENERAL
Model	4160
Booster	straight
Number of Circuits	2
Emission Code	3
Throttle Bore	1.563 inch
Bolt Hole Pattern	5.160" x 5.625"
GTIN Code	090127420072
Sold in Quantity	Each

Ratings & Reviews

4.9

17 Reviews

Overall Assessment

Customers consistently commend the carburetor for its excellent performance, reliability, and easy installation. Many note it works perfectly straight out of the box and no adjustments are needed, reflecting on its practicality and user-friendliness. Users particularly appreciate its exceptional functionality on various car models, from 1967 El Camino to 72 Nova. Its quality and superiority stood out against competitors, leading many customers to prefer this product, highlighting its adaptability and dominance in the market. The overall customer satisfaction confirms recommendations of purchase with its dependable performance.

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4.9

17 reviews

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Sort Reviews

Great plug and go

5.0

5 months ago

Ford Truck

Verified

Installed on my ford 302 and adjusted the idle and away I went.

Would Recommend

I had a big Demon on my car and couldent tune it to specs.

4.0

a year ago

Cashmere washington

Verified

Plug and play. Works well on my car.

Would Recommend

Nice and easy

5.0

a year ago

Jack

Phoenix, AZ

Verified

Worked perfectly right out of the box.

Would Recommend

Simply Amazing

5.0

a year ago

Rust bucket

Jacksonville FL

Verified

Out the box bolted it on an she was perfect. The car never ran so good

Would Recommend

great carb

5.0

a year ago

whiskey river

85392

Verified

put it on my 69 firebird w /400 engine

Would Recommend

Great carburetor!

5.0

2 years ago

Burnout

Rochester NY

Verified

Looks great & works great!

Would Recommend

I would buy it again

5.0

3 years ago

One

Phoenix

Verified

Works great

Would Recommend

I would buy this product again.

5.0

4 years ago

RA West Hauling

Steelville, MO

Verified

100% satisfied with this carb. Easy to order, reasonable price, quick shipping. It came with everything needed to bolt it on.

Would Recommend

Carburetor

5.0

4 years ago

Pam

Abilene Kansas

Verified

Used this carb on my 1967 El amino. Works great and I'm happy with my purchase.

Would Recommend

Carburetor

5.0

5 years ago

Bone

Connecticut

Verified

Carburetor works great!

Would Recommend

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Showing 10 of 17 reviews

Questions & Answers

5 Questions • 5 Answers

Sort Questions

Can you tell me what jet size and power valve size comes in this carb

by dennis caples

• 4 years ago

1 answer

View Answer

I'm interested in putting this on a performer intake manifold (2101) will this work?

by Todd

• 8 years ago

1 answer

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I see this carb has a fitting for fuel hose. Does that screw out so I can add fitting for #6 an? Also this is going on blower motor. Any problem? Thanks

by Birddog

• 9 years ago

1 answer

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What is the part number for the 1850 standard finish, with electric choke?

by TIM

• 9 years ago

1 answer

View Answer

Do you carry this with the electric choke, or do I need to buy the conversion kit, and if so, which kit do I need? I want the 1850, shiny, with the electric choke. Also, are the conversion kits chrome or also polished? Thank You.

by TIM

• 9 years ago

1 answer

View Answer

5 of 5 questions shown