Sealed Power 7291MA main bearing set for the 1989-1997 Ford Ranger 4-cylinder 2.3L, the 1998-2001 Ranger 4-cylinder 2.5L and other vehicles gives the crankshaft a bearing surface to spin on inside the block. These Sealed Power main bearings, also called crankshaft main bearings, are for engine rebuilds and repairs where worn bearings need replacing.
- A-Series bi-metal aluminum alloy bearing material
- Silicon in the alloy for greater surface hardness
- Bi-metal construction with seizure resistance
- Designed to reduce bearing wear dramatically or eliminate it
- Built to exacting tolerances
Quick facts
- Part: Sealed Power 7291MA main bearing set
- Also called: crankshaft main bearings
- Fits: the 1989-1997 Ford Ranger 4-cylinder 2.3L, the 1998-2001 Ranger 4-cylinder 2.5L and other vehicles
- Material: A-Series aluminum
- Condition: New
Worn main bearings can show up as a deep knock from the lower engine, low oil pressure or metal in the oil. Before you replace the set, rule out the oil pump, the oil level and other oil-pressure problems, because those can look similar.
Fits
The 1991-1993 Ford Mustang 4-cylinder 2.3L also takes this main bearing set as a direct-fit replacement, and so does the 1998-2001 Mazda B2500 4-cylinder 2.5L, one set per engine. If your car is not one of these, look up its year and engine under the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per application: 1
- Sold as: one main bearing set
Build and materials
- Material: A-Series aluminum, bi-metal alloy with silicon
- Grade: Premium
- Condition: New
- Country of origin: Mexico
Interchange: BM13-323-S
MS1743A · MS1743P · F87Z6333AA · F87Z6333HA · F87Z6337AA · XW7Z6D309BDA · MB5278AM
This part cross-references / interchanges with the following part numbers:
MS1743A, MS1743P, F87Z6333AA, F87Z6333HA, F87Z6337AA, XW7Z6D309BDA, MB5278AM, BM13-323-S
Frequently Asked Questions
Does the Sealed Power main bearing set 7291MA fit the 1991-1993 Ford Mustang 4-cylinder 2.3L?
Yes. Sealed Power 7291MA fits the 1991-1993 Ford Mustang 4-cylinder 2.3L, which takes one set. For another car, check its year and engine under the "Vehicles it fits" section.
Is the 7291MA main bearing set bi-metal or tri-metal?
Sealed Power 7291MA is bi-metal, made from A-Series aluminum alloy with silicon for greater surface hardness. The alloy has greater seizure resistance than tri-metal material.
What are common symptoms of worn main bearings?
A deep knock from the lower engine, low oil pressure or metal in the oil can be linked to worn main bearings. A shop can confirm it, since checking them means opening the engine.
Does the Sealed Power 7291MA replace Ford F87Z6333AA main bearings?
Yes. F87Z6333AA is one of the numbers this Sealed Power 7291MA set replaces. The Interchange line on this page lists the rest.
Where is the Sealed Power 7291MA main bearing set made?
The country of origin for Sealed Power 7291MA is Mexico.
