What is the purpose of main bearings?

Main bearings sit between the crankshaft and the engine block. They create a low-friction surface that allows the crankshaft to rotate smoothly while supporting the immense forces generated during combustion.

Why would I need an undersize bearing set?

Undersize bearings, like this 0.025mm set, are used when the crankshaft journals have been machined down to remove damage or wear. The undersize bearing compensates for the reduced journal diameter, ensuring proper clearance and support.

What is the material of these bearings?

These Clevite main bearings feature a tri-metal overlay. This construction is known for its good embeddability and wear characteristics, which helps protect the crankshaft journals.

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Trusted Since 1957

Est. 1957

Specifications

Brand: Clevite
Part #: MS1949P25MM
UPC: 027067636539

Clevite 89-97 Nissan 240SX (KA24E/KA24DE) Main Bearing Set

Name: Clevite 89-97 Nissan 240SX (KA24E/KA24DE) Main Bearing Set
Brand: Clevite
SKU: clevite-clevite-89-97-nissan-240sx-ka24e-ka24de-main-bearing-set-t14-55876
Price: 32.58 USD
Availability: InStock

$32.58

Only 5 left in stock

Clevite main bearing set for 1989-1997 Nissan 240SX (KA24E/KA24DE) engines.

Key Features

Fits 1989-1997 Nissan 240SX, 1993-2001 Nissan Altima, 1998-2003 Nissan Frontier, and other Nissan models.
Designed for KA24E and KA24DE engines.
Main bearings support the crankshaft and handle engine loads.
Features a tri-metal overlay for improved wear resistance.
This set is 0.025mm undersize, intended for machined crankshafts.

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About this part

Product Details

This is a Clevite Main Bearing Set, part number MS1949P25MM. It's designed to fit a range of Nissan vehicles, including the 1989-1997 240SX with KA24E or KA24DE engines, as well as models like the Altima and Frontier. Main bearings are crucial components that support the crankshaft within the engine block, allowing it to rotate smoothly while handling significant loads.

When you're rebuilding an engine or addressing bottom-end noise, a well-built main bearing set like this Clevite offering is essential. These bearings are made with a tri-metal overlay for good wear characteristics and embeddability, helping to protect your crankshaft journals. The 0.025mm undersize means these are intended for crankshafts that have been machined down by that amount to correct wear or runout.

Proper installation is key for these bearings to perform as intended. Ensure your crankshaft journals are clean and within the specified tolerance for this undersize before installation.