Enginetech BC420J.25 is a 0.25mm undersize main bearing set for 1982-2008 Ford, Lincoln, Mercury 3.8L-4.2L 232-256ci V6 engines.
Important Notes:
- Sized for crankshaft main journals machined .25mm undersize. Measure journal diameter before installation - installing on the wrong journal size will cause immediate clearance failure.
- Always replace main bearings as a complete set. Never mix new bearings with used bearings - uneven wear and clearance differences will cause premature failure.
- Excludes supercharged.
| Part Number | BC420J.25 |
| Bearing Size | 0.25mm Undersize |
| Quantity Per Set | 4 main bearings per set |
| Engine | 3.8L-4.2L 232-256ci V6 |
| Year Range | 1982-2008 |
| Makes | Ford, Lincoln, Mercury |
| Country of Origin | IL |
| Weight | 1.0 lbs |
| UPC | 707473000000 |
| OEM Cross-Refs | ACL:4M7295A, Clevite:MS-1812A, FEL-PRO:7295M, King Engine Bearings:MB4034AM, MAHLE:MS-1812P |
Complete main bearing set covering all main journals for the V6 application - one set required per engine.
Fitment:
- 1982-1982 Ford Granada 3.8L 232ci V6
- 1982-1982 Lincoln Continental 3.8L 232ci V6
- 1982-1983 Ford F-100 3.8L 232ci V6
- 1982-1987 Mercury Cougar 3.8L 232ci V6
- 1983-1986 Ford Mustang 3.8L 232ci V6
- 1983-1986 Mercury Capri 3.8L 232ci V6
- 1983-1986 Mercury Marquis 3.8L 232ci V6
- 1984-1984 Mercury Marquis 3.8L 232ci V6
- 1987-1997 Mercury Cougar 3.8L 232ci V6
- 1988-1994 Lincoln Continental 3.8L 232ci V6
- 1988-1995 Ford Taurus 3.8L 232ci V6
- 1988-1995 Mercury Sable 3.8L 232ci V6
- 1989-1993 Ford Thunderbird 3.8L 232ci V6
- 1994-2004 Ford Mustang 3.8L 232ci V6
- 1995-2003 Ford Windstar 3.8L 232ci V6
- 1997-2002 Ford E-150 Econoline 4.2L 256ci V6
- 1997-2002 Ford E-150 Econoline Club Wagon 4.2L 256ci V6
- 1997-2002 Ford E-250 Econoline 4.2L 256ci V6
- 1997-2003 Ford F-150 4.2L 256ci V6
- 2005-2008 Ford F-150 4.2L 256ci V6
- 2003-2003 Ford E-150 4.2L 256ci V6
- 2003-2003 Ford E-150 Club Wagon 4.2L 256ci V6
- 2003-2003 Ford E-250 4.2L 256ci V6
- 2004-2004 Ford F-150 Heritage 4.2L 256ci V6
- 2004-2004 Ford Mustang 3.9L 238ci V6
- 2004-2007 Ford Freestar 3.9L 238ci V6
- 2004-2007 Ford Freestar 4.2L 256ci V6
- 2004-2007 Mercury Monterey 4.2L 256ci V6
Enginetech main bearings are engineered to OEM specifications, drawing on over 40 years of engine rebuilding expertise to deliver the precise clearance, crush, and eccentricity required for long-term durability under both stock and moderate-performance loads. Each set is application-specific: materials, wall thickness, oil clearance, and surface finish are all matched to the crankshaft main journal geometry and operating loads of the engine family it serves. Main bearings are a wear component and must be selected to match the crankshaft main journal size - bearings sized for standard journals will not seat correctly on undersize-machined journals and vice versa, so verify your journal measurement with a precision micrometer before ordering or installing. Always replace main bearings as a complete set. Mixing new bearings with used bearings produces uneven oil clearance across the crankshaft and accelerates wear on the freshly installed bearings - the small cost of a complete set is insurance against premature failure on the bearings you just paid to install. Enginetech documents every set with clear application-specific notes, journal-size designation, and cross-references so the right part lands on the bench the first time.
WARNING: This product can expose you to chemicals including lead and nickel, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
