Product Description
Genuine Allstate 4090 Crankshaft Main Bearing Set (.002 Undersize) (NOS)
Ensure the precision and longevity of your classic Mopar flathead engine with this genuine Allstate 4090 Crankshaft Main Bearing Set. Sourced from the legendary Sears, Roebuck and Co. automotive line, this New Old Stock (NOS) component is designed for 1942-1958 Chrysler, Dodge, Plymouth, and DeSoto Inline-6 engines, including the 218, 230, 251, and 265 cubic inch powerplants. These bearings are precision-manufactured to .002 undersize, providing the necessary clearance for journals that have been lightly turned or polished. Engineered to meet the high standards of mid-century American manufacturing, this set is a critical find for collectors and restorers looking to maintain the authentic performance of their vintage Shoebox-era Mopar.
Key Features:
- Brand: Allstate (Sears Roebuck)
- Part Number: 4090 .002
- Position: Engine Internal (Crankshaft Main)
- Engine Fitment: 218 / 230 / 251 / 265 Inline-6
- Origin: Made in the USA
- Condition: New Old Stock (NOS)
Fitment:
| Make | Model | Year | Engine | Notes |
|---|---|---|---|---|
| Plymouth | Belvedere / Savoy / Plaza / Cranbrook / Cambridge / Deluxe | 1942-1958 | 3.6L 218 / 3.8L 230 L6 | .002 Undersize Main Set |
| Dodge | Coronet / Meadowbrook / Royal / Custom / Power Wagon / B-Series Truck | 1942-1958 | 3.8L 230 L6 | .002 Undersize Main Set |
| Chrysler / DeSoto | Windsor / Saratoga / Firedome / Powermaster / Firesweep | 1942-1954 | 4.1L 251 / 4.3L 265 L6 | .002 Undersize Main Set |
Fits Years:
1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958
Note on Photos: The images provided are of the actual item you will receive. Please inspect the photos carefully to confirm the condition and specific features of the part. Because these are vintage components, minor surface variations or packaging wear may be present; however, the part pictured is the exact unit being sold.
A Note on Fitment Accuracy: We manually research our fitment data using vintage manufacturer catalogs to provide you with the most accurate information possible. However, because we are human and these decades-old resources can occasionally contain errors, we cannot guarantee 100% accuracy. We strongly encourage you to perform your own due diligence and verify this part number for your specific application before purchasing. Please note that this part may also fit other vehicles or years not explicitly listed in our research.
Unbeatable Prices & Expectations
While many of our vintage parts were manufactured decades ago, they remain unused and high-quality. Some original boxes may show signs of shelf-wear, such as dust, tape, or surface distress from years of storage. Rest assured, the components inside have been inspected to ensure they are complete and ready to help you finish your project without breaking the bank.
