Holley 2 and 4 Barrel Carb Number Location
Holley 2300, 4150/4160 and 4180 models usually have the carburetor number stamped on the front of the choke tower.
4160
4150
The Ford number is on the first line, the Holley List number on the second line and the build date code on the third:
- D0OF-9510-N: Ford number, can be shortened to D0OF-N since all Ford carbs have the number 9510
- LIST-4627: Holley number, also written as R-4627
- 904: date code = 1969, October, 4th week
This carb is from a 1970 Ford G.T. Cobra-Jet Cougar & Mustang, 429 CID, Manual Trans. w/A.C.
Holley Teapot Carburetor Number Locations
Holley 2140 and 4000 carbs are stamped on the rear face of the mounting flange. Ford carbs are typically stamped with a Ford number and the Holley list number.
ECU-9510-E: The Ford carb number. This can be shortened to ECU-E, since all Ford carbs are part # 9510.
LIST 1094-4: The Holley number, typically cataloged as R-1094-4.
This one is from a 1956 Lincoln or Continental.
Other Holley Carb Number Locations
More Carb Number Examples
Holley 5210 carburetor from 1978 AMC Gremlin with 2.0L Audi engine, List R-7711A, AMC # SF3229630, Build date code 0897 = Day 89 of 1977 (March 30, 1977) (click image to enlarge)
Holley 4150EG carburetor from 1978-up GMC medium-duty truck with 366 CID engine, List R-7923, showing GMC # 2011491 on first line, Build date code 1140 = Day 114 of 1980 (Wednesday, April 23, 1980) (click image to enlarge)
Numerical indexes
Once you have the carburetor number from the list number, you can look up the basic parts in the numerical index, which also links to a page with a comprehensive parts listing for each Carter carburetor number: