Auto-Lite IAT-20231 Vacuum Advance Unit 1951-1959 Chrysler Dodge Plymouth NOS

Genuine Auto-Lite IAT-20231 Vacuum Advance Unit (NOS)

Restore the ignition timing precision of your classic Mopar with this genuine Auto-Lite IAT-20231 Vacuum Advance Unit. This is a vintage New Old Stock (NOS) part, preserved in excellent condition. It ensures proper spark advance under load for peak engine efficiency.

This part is designed for the Distributor position on specific 1951-1959 Chrysler, Dodge, and Plymouth vehicles equipped with Auto-Lite ignition systems.

Key Features:

• Part Number: IAT-20231 (Auto-Lite)
• Interchange Part: IAT-2023, IAT2023, IAT-2023RJ, IAT-2023RF, IAT-2023RG
• Position: Distributor Vacuum Advance
• Engine Fitment: 6-Cylinder & V8 (See Distributor ID)
• Origin: Made in USA (Vintage Stock)
• Condition: New Old Stock (NOS)

Verified Vehicle Fitment:

Fits Years:

1951 1952 1953 1954 1955 1956 1957 1958 1959

Important Verification Note

Please inspect your original part! Vintage distributors were often swapped or modified over the decades. Ensure your distributor number matches Auto-Lite specifications for this vacuum unit before purchasing.

Unbeatable Prices & Expectations

We scour the country to find the best deals on NOS and NORS parts so we can pass the savings on to you. Our prices are often significantly lower than major competitors.

Please Note: While we verify fitment to the best of our ability using vintage catalogs, there can be variations. We strongly recommend comparing our photos and specs to your original part before purchasing.