Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Clevite P-Series Main Bearings MS-178P-20 MAIN BEARING SET

SKU: CLEMS-178P-20

Main Bearings

Clevite P-Series Main Bearings MS-178P-20 MAIN BEARING SET

SKU: CLEMS-178P-20

Main Bearings
A$383.21
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Clevite P-Series main bearings are the oldest members of the Clevite 77 bearing family and are intended for high-revving engines. To compensate for the high-load factors and distortion in these engines, these bearings have higher eccentricity and a high crush factor. P-Series bearings are constructed of tri-metal cast copper lead. They have a steel back for support, a cast copper lead lining to withstand the loads of engine operation, and an electroplated babbit overlay on the running surface to provide searing surface qualities. In addition, the oil grooves on most applications extend all the way around both halves for better oiling.

Clevite P-Series main bearings are an ideal design, producing a degree of conformability, embedability, slipperiness, and fatigue resistance, not found in original equipment and competitive bimetal bearings.

Part Type

Main Bearings

Data: v4.2 - Upd: 2026-10-14 10:29:36

Specifications

Product Attributes - Brand
Clevite Engine Parts
Product Attributes - Manufacturer's Part Number
MS-178P-20
Product Attributes - Part Type
Main Bearings
Product Attributes - Product Line
Clevite P-Series Main Bearings
Product Attributes - UPC
027067529619
Product Attributes - Bearing Usage
Direct replacement
Product Attributes - Engine Crankshaft Undersize (in.)
0.020 in.
Product Attributes - Engine Crankshaft Undersize (mm)
0.50mm
Product Attributes - Grooved Bearing
Yes
Product Attributes - Groove Location
Upper and lower
Product Attributes - Groove Style
Full
Product Attributes - Thrust Bearing Oversize
Stock
Product Attributes - Bearing Material
Tri-metal, TM-77
Product Attributes - Quantity
Sold as a set of 5.

Reference Information

Brand Name/s Clevite
StreetFX SKU cleMS-178P-20
SFX Item ID 4885358
Supplier Item Code 4885358
Manufacturer SKU MS-178P-20
Manufacturer UPC 27067529619

Compatibility

Application Data
  • MakeMERCURY
    ModelMONTCLAIR
    SubmodelSPECIAL
    Beginning Year1956
    Ending Year1960
    Engine TypeV8
    Liter4.5
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.5L/272
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeB
  • MakeMERCURY
    ModelMONTCLAIR
    SubmodelSPECIAL
    Beginning Year1960
    Ending Year1960
    Engine TypeV8
    Liter4.5
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.5L/272
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeB
  • MakeMERCURY
    ModelMONTCLAIR
    SubmodelSTARLINER
    Beginning Year1961
    Ending Year1961
    Engine TypeV8
    Liter4.5
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.5L/272
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020in Undersize
    Engine VIN CodeB
  • MakeMERCURY
    ModelMONTCLAIR
    SubmodelSTARLINER
    Beginning Year1961
    Ending Year1961
    Engine TypeV8
    Liter3.9
    CID239
    CC3917
    Engine FamilyFord Y-block
    Engine Size3.9L/239
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020in Undersize
    Engine VIN CodeM
  • MakeMERCURY
    ModelMONTEREY
    SubmodelSTARLINER
    Beginning Year1961
    Ending Year1955
    Engine TypeV8
    Liter3.9
    CID239
    CC3917
    Engine FamilyFord Y-block
    Engine Size3.9L/239
    Application NotesOE Replacement P Series (Tri-Metal) .020in Undersize
    Engine VIN CodeC
  • MakeMERCURY
    ModelMONTEREY
    SubmodelSTARLINER
    Beginning Year1961
    Ending Year1959
    Engine TypeV8
    Liter3.9
    CID239
    CC3917
    Engine FamilyFord Y-block
    Engine Size3.9L/239
    Application NotesMaterial Grade: OE Replacement Series: P Series (Tri-Metal) Size: .020" Undersize
    Engine VIN CodeC
  • MakeMERCURY
    ModelMONTEREY
    SubmodelSUNLINER
    Beginning Year1961
    Ending Year1959
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeC
  • MakeMERCURY
    ModelMONTEREY
    SubmodelSUNLINER
    Beginning Year1961
    Ending Year1959
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeP
  • MakeMERCURY
    ModelMONTEREY
    SubmodelSUNLINER
    Beginning Year1960
    Ending Year1961
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesOE Replacement P Series (Tri-Metal) .020in Undersize
    Engine VIN CodeW
  • MakeMERCURY
    ModelMONTEREY
    SubmodelSUNLINER
    Beginning Year1960
    Ending Year1961
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesColumn1 OE Replacement Column2 P Series (Tri-Metal) Column3 .020in Undersize Column13 Domestic Column20 64-54 FOR 4.4L-4.8L
    Engine VIN CodeW
  • MakeMERCURY
    ModelMONTEREY
    SubmodelTOWN VICTORIA
    Beginning Year1960
    Ending Year1961
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesColumn1 OE Replacement Column2 P Series (Tri-Metal) Column3 .020in Undersize Column13 Domestic Column20 64-54 FOR 4.4L-4.8L
    Engine VIN CodeW
  • MakeMERCURY
    ModelMONTEREY
    SubmodelTOWN VICTORIA
    Beginning Year1960
    Ending Year1962
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeW
  • MakeMERCURY
    ModelMONTEREY
    SubmodelTOWN VICTORIA
    Beginning Year1961
    Ending Year1961
    Engine TypeV8
    Liter3.9
    CID239
    CC3917
    Engine FamilyFord Y-block
    Engine Size3.9L/239
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeU
  • MakeMERCURY
    ModelMONTEREY
    SubmodelTOWN VICTORIA
    Beginning Year1961
    Ending Year1961
    Engine TypeV8
    Liter3.9
    CID239
    CC3917
    Engine FamilyFord Y-block
    Engine Size3.9L/239
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeP
  • MakeMERCURY
    ModelMONTEREY
    SubmodelCUSTOM
    Beginning Year1959
    Ending Year1958
    Engine TypeV8
    Liter3.9
    CID239
    CC3917
    Engine FamilyFord Y-block
    Engine Size3.9L/239
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020in Undersize
    Engine VIN CodeU
  • MakeMERCURY
    ModelMONTEREY
    SubmodelCUSTOM
    Beginning Year1958
    Ending Year1958
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020in Undersize
    Engine VIN CodeD
  • MakeMERCURY
    ModelMONTEREY
    SubmodelCUSTOM
    Beginning Year1961
    Ending Year1960
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeP
  • MakeMERCURY
    ModelMONTEREY
    SubmodelCUSTOM
    Beginning Year1961
    Ending Year1960
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesColumn1 OE Replacement Column2 P Series (Tri-Metal) Column3 .020in Undersize Column13 Domestic Column20 64-54 FOR 4.4L-4.8L
    Engine VIN CodeD
  • MakeMERCURY
    ModelMONTEREY
    SubmodelBASE
    Beginning Year1961
    Ending Year1958
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade: OE Replacement Series: P Series (Tri-Metal) Size: .020" Undersize
    Engine VIN CodeM
  • MakeMERCURY
    ModelMONTEREY
    SubmodelCLUB VICTORIA
    Beginning Year1956
    Ending Year1958
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeM
  • MakeMERCURY
    ModelMONTEREY
    SubmodelCUSTOM
    Beginning Year1956
    Ending Year1959
    Engine TypeV8
    Liter4.8
    CID292
    CC4786
    Engine FamilyFord Y-block
    Engine Size4.8L/292
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeC
  • MakeMERCURY
    ModelMONTEREY
    SubmodelCUSTOM
    Beginning Year1956
    Ending Year1959
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade: OE Replacement Series: P Series (Tri-Metal) Size: .020" Undersize
    Engine VIN CodeC
  • MakeMERCURY
    ModelMONTEREY
    SubmodelCUSTOM
    Beginning Year1960
    Ending Year1959
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade: OE Replacement Series: P Series (Tri-Metal) Size: .020" Undersize
    Engine VIN CodeW
  • MakeMERCURY
    ModelMONTEREY
    SubmodelCUSTOM
    Beginning Year1961
    Ending Year1956
    Engine TypeV8
    Liter4.2
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.2L/256
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020" Undersize
    Engine VIN CodeW
  • MakeMERCURY
    ModelMONTEREY
    SubmodelSUN VALLEY
    Beginning Year1956
    Ending Year1960
    Engine TypeV8
    Liter4.5
    CID256
    CC4196
    Engine FamilyFord Y-block
    Engine Size4.5L/272
    Application NotesMaterial Grade OE Replacement Series P Series (Tri-Metal) Size .020in Undersize
    Engine VIN CodeB

Loading compatibility information...

Keep shopping

More from Clevite