Main Bearing Set for 1975-1979 Ford F-150 & More - Sealed 4907M 20

$122.99

Sealed Power Engine Crankshaft Main Bearing Set 4907M20

Part number: 4907M20

UPC: 724956144754

Condition: New

Weight: 1.90 LBS

Item Package Quantity: 1

$122.99

Current Stock: 164

Quantity:

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Sealed Power Engine Crankshaft Main Bearing Set P/N:4907M 20

$122.99

Description

Sealed 4907M 20 main bearing set for the 1975-1979 Ford F-150 V8 7.5L and other vehicles supports the crankshaft as it turns in the engine block. The set meets or exceeds OEM specifications.

Steel-backed bronze alloy lining with an overplate
Popular for fatigue resistance and strength
Conformability suited to older applications
Exacting tolerances from state-of-the-art manufacturing
0.020 inch undersize bearing set

Quick facts

Part: Sealed 4907M 20 main bearing set
Also called: crankshaft main bearings
Fits: 1975-1979 Ford F-150 V8 7.5L and other vehicles
Material: Steel backed overplated bronze alloy
Condition: New

Low oil pressure, a deep knock from the lower engine or metal in the drained oil can mean the main bearings are worn, though a tired oil pump or a bad oil pressure sensor can also give a low-pressure reading, so find the cause before replacing the set.

Fits

The 1975-1979 Ford F-150 V8 7.5L, the 1983-1996 Ford F-250 V8 7.5L and the 1969-1971 Ford Mustang V8 7.0L all take this set, and so do many other Ford, Lincoln and Mercury models. Open the "Vehicles it fits" section to check your exact model and engine.

Specifications

Fit and size

Undersize: 0.020 inch
Quantity per vehicle: 1
Engines: V8-6.1L, V8-7.0L, V8-7.5L

Build and materials

Type: main bearing set
Material: Steel backed overplated bronze alloy
Condition: New
Country of origin: Mexico

In the box

One main bearing set. This listing holds one set, and the application calls for one set.

Interchange: MB4186.20 · MB5650SI 020
5M1039P20 · MS1039P20 · BC341J020 · MS3039P20

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

This part cross-references / interchanges with the following part numbers:

5M1039P20, MS1039P20, MB4186.20, BC341J020, MB5650SI 020, MS3039P20

Buyer's Q&A

Frequently Asked Questions

Does the Sealed 4907M 20 main bearing set fit a 1983-1996 Ford F-250 with the 7.5L V8?

Yes. Sealed 4907M 20 is listed for the 1983-1996 Ford F-250 V8 7.5L. Open the "Vehicles it fits" section to check your exact model and engine.

What does 0.020 undersize mean on the Sealed 4907M 20 bearing set?

Sealed 4907M 20 is 0.020 inch undersize, made for a crankshaft journal ground to that size. A machine shop can measure the journals to confirm which size you need.

What is this main bearing set made of?

The lining is steel-backed bronze alloy with an overplate, which is popular for fatigue resistance and strength and for its conformability in older applications.

What are the signs of worn crankshaft main bearings?

A low oil pressure reading, a deep knock from the bottom of the engine or metal in the drained oil can point to worn bearings. Have a shop confirm it promptly.

Is the Sealed Power 4907M 20 the same as bearing set MS1039P20?

Yes. MS1039P20 is listed as one of the numbers the Sealed 4907M 20 replaces. The Interchange line on this page lists the others.