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Unpublished Item

JEGS Performance Products 25051 - JEGS Main Bearings



JEGS Performance Products 25051 - JEGS Main Bearings

Part Number: 555-25051

Performance Main Bearing Set
  • Small Block Ford
  • +.001"
  • $19.99
    Ships

    Specifications:

    Bearing Usage
    Performance
    Groove Location
    Upper
    Grooved Bearing
    Yes
    Crank Undersize (in.)
    0.001
    Engine Family
    Small Block
    Engine Make
    Ford
    Engine Size
    289-351W
    Material
    Bi-metal, silicon aluminum

    Traditional bearings have three layers: steel, copper-lead, and thin babbitt overlay (only 0.0005" to 0.0008"). JEGS Main Bearings in a Performance or High-Performance series have two layers: high-strength steel and bonded silicon, tin, and copper in an aluminum matrix (0.015" thick). Because an alloy, properties are maintained through its entire depth to deliver consistent, reliable output. Additionally, micro-fine machined High-Performance Bearings have chamfered oil holes and offer a copper-lead version for Chevy Gen III/IV LS Engines only. Bearings are sold in sets for Chevy and Ford applications.

    High Load Capacity
    Aluminum silicon bearings withstand the stress of high-performance engines. JEGS Bearings are made from the same metallurgical alloy so cars that have standard bearings benefit from this alloy used in race engines.

    Temperature Resistance
    This alloy's melting/fatigue point is 450°+ F (100° more than the thin babbitt overlay of tri-metal bearings). This means extra protection against localized overheating due to misalignment, detonation, overloading, loss of coolant, etc.

    Particle Embedability
    More than half of engine bearing failure is caused by metallic particles that scratch crank journals and weaken or tear thin bearing overlays. Because aluminum silicon overlay is much thicker than babbitt in tri-metal bearings (0.015" vs. 0.0008"), it provides 18 times more embedability to trap particles to prevent crank journal scratches. This is especially true for particles over 0.0004", which cause most of the damage.

    Conformability
    The thicker aluminum silicon layer allows bearings to better conform to problems, such as metal-to-metal contact due to misalignment. Greater conformability also means fewer bearing failures.

    Control of Wall Tolerance
    Bearing-to-journal clearance is affected by several factors. We've alleviated concerns about inconsistent shell-to-shell bearing wall thickness by using statistical control methods to minimize wall thickness variation. JEGS Engine Bearing thickness varies no more than 0.00010". Other manufacturers produce bearings with wall thickness at the crown that varies as much as 0.00025".

    Does this fit your vehicle?

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    1979 FORD MUSTANG

    • Liter: 5.0
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    1972 FORD BRONCO

    • CC: 4949
    • Liter: 5.0
    • SubModel: WAGON
    • EngineType: V8

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    • EngineType: V8

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    • EngineType: V8

    1990-1991 FORD E-150 ECONOLINE

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    • SubModel: BASE
    • EngineType: V8

    1977 FORD LTD II

    • Liter: 5.0
    • EngineType: V8
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    1970-1974 MERCURY MONTEGO

    • Liter: 5.0
    • SubModel: MX
    • CUI: 302
    • EngineType: V8

    1964-1965 FORD COUNTRY SQUIRE

    • CC: 4727
    • Liter: 4.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 289
    • EngineType: V8

    1990-1991 FORD E-250 ECONOLINE

    • Liter: 5.0
    • EngineType: V8
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    1971 FORD MUSTANG

    • Liter: 5.0
    • SubModel: GRANDE
    • CUI: 302
    • EngineType: V8

    1985-1993 FORD MUSTANG

    • EngineType: V8
    • SubModel: LX

    1970-1974 FORD TORINO

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1968-1974 FORD RANCHERO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: 500

    1978-1979 MERCURY MONARCH

    • EngineType: V8
    • SubModel: BASE

    1983 FORD E-250 ECONOLINE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CUSTOM

    1968 MERCURY MONTEGO

    • Liter: 5.0
    • SubModel: MX
    • CUI: 302
    • EngineType: V8

    1979-1981 FORD LTD

    • Liter: 5.0
    • EngineType: V8
    • SubModel: COUNTRY SQUIRE

    1970 FORD E-300 ECONOLINE

    • Liter: 5.0
    • SubModel: CHATEAU WAGON
    • CUI: 302
    • EngineType: V8

    1969 MERCURY COMET

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1983-1986 FORD LTD

    • Liter: 5.0
    • EngineType: V8
    • SubModel: COUNTRY SQUIRE

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    • EngineType: ALL
    • SubModel: CARGO

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    • SubModel: GHIA

    1970-1971 FORD TORINO

    • Liter: 5.0
    • SubModel: SQUIRE
    • CUI: 302
    • EngineType: V8

    1969 FORD GT40

    • Liter: 4.7
    • EngineType: V8
    • SubModel: MK III

    1984-1985 LINCOLN MARK VII

    • EngineType: V8
    • SubModel: BASE

    1990-1991 FORD E-250 ECONOLINE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SUPER CARGO

    1995 FORD MUSTANG

    • EngineType: ALL
    • SubModel: COBRA SVT

    1970-1974 FORD RANCHERO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SQUIRE

    1966-1967 FORD BRONCO

    • CC: 4727
    • Liter: 4.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: C
    • CUI: 289
    • EngineType: V8

    1970 FORD FALCON

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1972 FORD P-350 VAN

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1970-1972 FORD RANCH WAGON

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1966-1967 FORD GALAXIE

    • CC: 4727
    • Liter: 4.7
    • SubModel: BASE
    • CUI: 289
    • EngineType: V8

    1979 FORD E-250 ECONOLINE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SUPER CARGO

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    • EngineType: ALL
    • SubModel: ALL

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    • CC: 4727
    • Liter: 4.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 289
    • EngineType: V8

    1964-1967 MERCURY CALIENTE

    • CC: 4727
    • Liter: 4.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 289
    • EngineType: V8

    1968 MERCURY COUGAR

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1969 FORD TORINO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SQUIRE

    1979-1980 FORD E-250 ECONOLINE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: SUPER PASSENGER WAGON

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    • EngineType: ALL
    • SubModel: GT

    1998-2001 FORD MOTORHOME

    • EngineType: ALL
    • SubModel: CLASS C; E-450

    1970 MERCURY COUGAR

    • Liter: 5.0
    • SubModel: XR-7
    • CUI: 302
    • EngineType: V8

    1973 FORD MUSTANG

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1974 FORD GRAN TORINO

    • Liter: 5.0
    • SubModel: BROUGHAM
    • CUI: 302
    • EngineType: V8

    1987-1989 FORD E-150 ECONOLINE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CUSTOM

    1969-1971 FORD BRONCO

    • EngineType: V8
    • SubModel: BASE

    1963 FORD FAIRLANE

    • CC: 4727
    • Liter: 4.7
    • SubModel: BASE
    • CUI: 289
    • EngineType: V8

    1963-1967 FORD GALAXIE 500

    • Liter: 4.7
    • EngineType: V8
    • SubModel: BASE

    1991-1992 FORD THUNDERBIRD

    • EngineType: V8
    • SubModel: BASE

    1977-1979 FORD RANCHERO

    • Liter: 5.0
    • EngineType: V8
    • SubModel: 500

    1970-1974 MERCURY MONTEGO

    • Liter: 5.0
    • SubModel: VILLAGER
    • CUI: 302
    • EngineType: V8

    1968 FORD LTD

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1970-1974 MERCURY MONTEGO

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1970 FORD GALAXIE 500

    • Liter: 5.0
    • SubModel: XL
    • CUI: 302
    • EngineType: V8

    1969 FORD FALCON

    • Liter: 5.0
    • EngineType: V8
    • SubModel: FUTURA

    1968 FORD FALCON

    • Liter: 4.7
    • SubModel: BASE
    • CUI: 289
    • EngineType: V8

    1972-1974 FORD F-350

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1971-1977 FORD MAVERICK

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1973 FORD E-200 ECONOLINE

    • EngineType: V8
    • SubModel: CUSTOM WAGON

    1968 MERCURY COMET

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1983 FORD E-150 ECONOLINE CLUB WAGON

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CUSTOM

    1987-1991 FORD F-150

    • Liter: 5.0
    • EngineType: V8
    • SubModel: CUSTOM

    1986-1989 FORD E-150 ECONOLINE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: XL

    1970 FORD FAIRLANE

    • Liter: 5.0
    • SubModel: 500
    • CUI: 302
    • EngineType: V8

    1968 FORD TORINO

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1963 FORD FORD 300

    • Liter: 4.7
    • EngineType: V8
    • SubModel: BASE

    1974 FORD E-200 ECONOLINE

    • CC: 4949
    • Liter: 5.0
    • SubModel: CUSTOM WAGON
    • EngineType: V8

    1971 FORD MUSTANG

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1967 FORD RANCHERO

    • Liter: 4.7
    • EngineType: V8
    • SubModel: 500

    1969 FORD GALAXIE 500

    • Liter: 5.0
    • EngineType: V8
    • SubModel: XL

    1995 FORD MUSTANG

    • Liter: 5.0
    • Aspiration: N
    • SubModel: GT
    • Engine Vin: T
    • CUI: 302
    • EngineType: V8

    1964-1965 FORD GALAXIE

    • CC: 4727
    • Liter: 4.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 289
    • EngineType: V8

    1971-1972 FORD LTD

    • Liter: 5.0
    • SubModel: BROUGHAM
    • CUI: 302
    • EngineType: V8

    1978-1979 FORD FAIRMONT

    • EngineType: V8
    • SubModel: FUTURA

    1969-1971 FORD BRONCO

    • EngineType: V8
    • SubModel: WAGON

    1995 FORD BRONCO

    • EngineType: ALL
    • SubModel: EDDI BAUER

    1970 FORD MUSTANG

    • Liter: 5.0
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 302
    • EngineType: V8

    1987-1991 FORD LTD CROWN VICTORIA

    • EngineType: ALL
    • SubModel: LX

    1987-1991 FORD LTD CROWN VICTORIA

    • EngineType: ALL
    • SubModel: S

    1975-1977 MERCURY MONARCH

    • Liter: 5.0
    • EngineType: V8
    • SubModel: GHIA

    1967 FORD FAIRLANE

    • Liter: 4.7
    • SubModel: 500
    • CUI: 289
    • EngineType: V8

    1969-1986 FORD F-250

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1972 FORD MUSTANG

    • Liter: 5.0
    • Aspiration: N
    • SubModel: GRANDE
    • Engine Vin: F
    • CUI: 302
    • EngineType: V8

    1978-1979 FORD GRANADA

    • EngineType: V8
    • SubModel: BASE

    1971-1972 FORD E-300 ECONOLINE

    • EngineType: V8
    • SubModel: CUSTOM PASSENGER WAGON

    1984-1985 FORD LTD

    • EngineType: V8
    • SubModel: BROUGHAM

    1984 FORD E-150 ECONOLINE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE

    1984 FORD E-250 ECONOLINE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: BASE
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