Main Bearing Set - Ford - 040 MB7703AM/MS3808 040K - King - NOS
| Brand | King |
| Part Number | 040 MB7703AM |
| Type | Main Bearing |
| Condition | New Old Stock |
Specifications
- Undersize / oversize: 0.040 inch (for crankshaft reground 0.040 inch undersize)
- Bearing construction: Bi-metal, aluminium-based running layer on steel back (AM Series)
Vehicle Fitment
| Ford | Falcon XR/XT/XW/XY/XA/XB/XC 200 & 250 pre-crossflow inline-six (AU/NZ), 1966-1979 |
| Ford | Falcon XD/XE/XF 250 4.1L crossflow inline-six (AU/NZ), 1979-1988, shares 200/250 block and main journals |
| Ford | Mustang 200 3.3L & 250 4.1L inline-six (US), 1969-1973 |
| Ford | Maverick / Mercury Comet 200 & 250 inline-six (US/North America), 1970-1977 |
| Ford | Fairmont / Mercury Zephyr 200 3.3L inline-six, 1978-1983 |
| Ford | Granada 200 3.3L & 250 4.1L inline-six, 1975-1982 |
| Ford | Fairlane 200 & 250 6-cyl (US), 1963-1970 |
| Ford | Bronco 170 2.8L 6-cyl (shares 7-main block family), 1966-1977 |
Cross References
| Part Numbers | Relationship |
|---|---|
| MB7703AM | OE original |
Additional Information
- Set includes a flanged thrust main bearing pair which controls crankshaft endplay.
- 0.040 inch undersize, fits crankshafts that have been machined 0.040 inch undersize on the main journals during a rebuild. Not suitable for standard untouched cranks.
- Ford 200 and 250 inline-six engines both use seven main bearings and share main journal diameters, which is why one set covers both capacities.
New Old Stock (NOS) — Unused part in original condition. Packaging may show age-related shelf wear. New old stock, shells sealed in original shrink wrap inside original King printed box; box shows light age toning and shelf wear on the label, bearings unused with no scoring or oxidation on running faces. Rubber and elastomer components such as belts, seals, and gaskets may harden or degrade during extended storage — inspect before fitting. Please confirm this part number suits your vehicle before purchasing.
SKU: ENG-00334
