HomeAir and Fuel Delivery > CarburetionHygrade CV300 Carburetor Choke Thermostat
Part #: CV300

Hygrade CV300 Carburetor Choke Thermostat

29 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick and Cadillac, LeSabre, Regal, Commercial Chassis, Eldorado, DeVille, Fleetwood, and Calais
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Hygrade CV300 Carburetor Choke Thermostat Overview

The Hygrade CV300 Carburetor Choke Thermostat is designed to provide reliable choke control for select Buick and Cadillac models. Engineered with a single male blade terminal, this thermostat ensures precise temperature regulation for optimal carburetor performance.

  • Single male blade terminal for secure electrical connection
  • Terminal quantity: 1 for straightforward installation
  • Compatible with Buick and Cadillac carburetion systems
  • Part number CV300 for easy identification and replacement

Technical Details and Compatibility

This carburetor choke thermostat features a male blade terminal type, which is common in many classic vehicle electrical systems. The single terminal design simplifies wiring and reduces installation complexity. The Hygrade CV300 is specifically compatible with Buick models such as LeSabre, Regal, and Commercial Chassis, as well as Cadillac models including DeVille, Eldorado, and Fleetwood. This ensures proper fitment and function within the air and fuel delivery system of these vehicles.

Applications and Problem Resolution

The CV300 thermostat is used to regulate the choke mechanism in carburetors, helping maintain the correct air-fuel mixture during engine warm-up. It addresses several common issues:

  • Improper choke operation causing rough idling
  • Difficulty starting engines in cold conditions
  • Excessive fuel consumption due to choke malfunction
  • Delayed engine warm-up times
  • Inconsistent engine performance related to carburetor choke

Installation Notes and Tips

When installing the Hygrade CV300, ensure the male blade terminal is securely connected to the corresponding female connector to prevent electrical faults. Verify compatibility with your specific Buick or Cadillac model before installation. It is recommended to inspect the choke linkage and carburetor components for wear or damage during replacement to maintain overall system integrity.

Quality Assurance and Warranty

Hygrade manufactures the CV300 carburetor choke thermostat to meet industry standards for durability and performance. While specific warranty details may vary, Hygrade products typically come with a limited warranty against manufacturing defects. Always consult product documentation or the supplier for exact warranty terms.

BrandHygrade
Part NumberCV300
Terminal GenderMale
Terminal TypeBlade

This part fits 29 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1978BuickLeSabre3.8LV6N/Aw/ Rochester Carb.; M4ME; 17055840-17055842, 17058240, 17058246, 17058540
1978BuickRegal3.8LV6N/Aw/ Rochester Carb.; M4ME; 17055840-17055842, 17058240, 17058246, 17058540
1978BuickRegal3.8LV6N/Aw/ Rochester Carb.; M2ME; 17055868, 17058192
1978CadillacCommercial Chassis7.0LV8N/Aw/ Rochester Carb.; w/ Federal Emissions; M4ME; 17055833, 17058233, 17058532-17058533, 17058535, 17065250, 17065302
1978CadillacEldorado7.0LV8N/Aw/ Rochester Carb.; w/ Federal Emissions; M4ME; 17055833, 17058233, 17058532-17058533, 17058535, 17065250, 17065302
1977CadillacCommercial Chassis7.0LV8N/Aw/ Rochester Carb.; M4ME; 17055130-17055134, 17055519, 17055554-17055555, 17055559, 17057230-17057235, 17057530, 17057533, 17067032
1977CadillacCommercial Chassis7.0LV8N/Aw/ Rochester Carb.; M4MEA; 17055131-17055133, 17055554-17055555, 17057231-17057235
1977CadillacDeVille7.0LV8N/Aw/ Rochester Carb.; M4ME; 17055130-17055134, 17055519, 17055554-17055555, 17055559, 17057230-17057235, 17057530, 17057533, 17067032
1977CadillacDeVille7.0LV8N/Aw/ Rochester Carb.; M4MEA; 17055131-17055133, 17055554-17055555, 17057231-17057235
1977CadillacEldorado7.0LV8N/Aw/ Rochester Carb.; M4ME; 17055130-17055134, 17055519, 17055554-17055555, 17055559, 17057230-17057235, 17057530, 17057533, 17067032
1977CadillacEldorado7.0LV8N/Aw/ Rochester Carb.; M4MEA; 17055131-17055133, 17055554-17055555, 17057231-17057235
1977CadillacFleetwood7.0LV8N/Aw/ Rochester Carb.; M4ME; 17055130-17055134, 17055519, 17055554-17055555, 17055559, 17057230-17057235, 17057530, 17057533, 17067032
1977CadillacFleetwood7.0LV8N/Aw/ Rochester Carb.; M4MEA; 17055131-17055133, 17055554-17055555, 17057231-17057235
1976CadillacCommercial Chassis8.2LV8N/Aw/ Rochester Carb.; M4ME; 17052931-17052932, 17054693-17054694, 17056230, 17056232, 17056530
1976CadillacCommercial Chassis8.2LV8N/Aw/ Rochester Carb.; M4MEA; 17052931-17052932, 17054693-17054694, 17056230, 17056232, 17056530
1976CadillacDeVille8.2LV8N/Aw/ Rochester Carb.; M4ME; 17052931-17052932, 17054693-17054694, 17056230, 17056232, 17056530
1976CadillacDeVille8.2LV8N/Aw/ Rochester Carb.; M4MEA; 17052931-17052932, 17054693-17054694, 17056230, 17056232, 17056530
1976CadillacEldorado8.2LV8N/Aw/ Rochester Carb.; M4ME; 17052931-17052932, 17054693-17054694, 17056230, 17056232, 17056530
1976CadillacEldorado8.2LV8N/Aw/ Rochester Carb.; M4MEA; 17052931-17052932, 17054693-17054694, 17056230, 17056232, 17056530
1976CadillacFleetwood8.2LV8N/Aw/ Rochester Carb.; M4ME; 17052931-17052932, 17054693-17054694, 17056230, 17056232, 17056530
1976CadillacFleetwood8.2LV8N/Aw/ Rochester Carb.; M4MEA; 17052931-17052932, 17054693-17054694, 17056230, 17056232, 17056530
1975CadillacCommercial Chassis8.2LV8N/Aw/ Rochester Carb.; M4ME; 17054694, 7045193, 7045230, 7045530, 7047500
1975CadillacCommercial Chassis8.2LV8N/Aw/ Rochester Carb.; M4MEA; 7045193, 7045230, 7045530, 7047500
1975CadillacDeVille8.2LV8N/Aw/ Rochester Carb.; M4ME; 17054694, 7045193, 7045230, 7045530, 7047500
1975CadillacDeVille8.2LV8N/Aw/ Rochester Carb.; M4MEA; 7045193, 7045230, 7045530, 7047500
1975CadillacEldorado8.2LV8N/Aw/ Rochester Carb.; M4ME; 17054694, 7045193, 7045230, 7045530, 7047500
1975CadillacEldorado8.2LV8N/Aw/ Rochester Carb.; M4MEA; 7045193, 7045230, 7045530, 7047500
1975CadillacFleetwood8.2LV8N/Aw/ Rochester Carb.; M4ME; 17054694, 7045193, 7045230, 7045530, 7047500
1975CadillacFleetwood8.2LV8N/Aw/ Rochester Carb.; M4MEA; 7045193, 7045230, 7045530, 7047500

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

170619632-300572C1044779-1461CT317E6008TH317

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.