Genuine Federal Mogul 388M-20 Main Bearing Set (.020 Undersize)
Restore the bottom-end stability and oil pressure of your classic Ford Flathead with this genuine Federal Mogul 388M-20 Main Bearing Set. This is a vintage New Old Stock (NOS) set. It is precision-engineered to meet original Ford specifications for the "21-Stud" V8 engines and is sized for a crankshaft that has been ground .020" undersize.
This part is designed for the Crankshaft Main position on specific 1937-1938 Ford vehicles (and late 1936) equipped with the 85HP Flathead V8.
Vintage Sourcing Note: To ensure consistent availability of these hard-to-find parts, we source our inventory from several premier US manufacturers, including Federal Mogul, TRW, Clevite, and Sealed Power. While the specific brand packaging may vary based on current stock, we guarantee that you will receive a genuine, American-made component that is fully interchangeable and verified to fit the advertised application 100%.
Key Features:
- Part Number: 388M-20 (Federal Mogul)
- Interchange: Replaces Ford 68-6331
- Position: Crankshaft Main Bearings (Complete Set)
- Engine Fitment: Ford Flathead V8 (85HP / 21-Stud)
- Size: .020" Undersize (.020 US)
- Origin: Made in USA (Vintage Stock)
- Condition: New Old Stock (NOS)
Verified Vehicle Fitment:
| Make |
Model |
Year |
Engine |
Notes |
| Ford |
Passenger Cars & Trucks |
1937-1938 |
V8 (85 HP) |
.020 Crankshaft Required |
| Ford |
Model 68 / Model 78 |
1936-1938 |
V8 (85 HP) |
Late '36 Production |
Fits Years:
1936 1937 1938
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: All vehicle fitment data is manually researched from vintage catalogs. While we strive for accuracy, historical data can sometimes be imperfect. Additionally, this part may fit other vehicle makes, models, and years not explicitly listed. We strongly encourage you to perform your own due diligence by comparing our provided photos and specifications to your original part to ensure proper fitment before purchasing.
