What does '2.50mm undersize' mean for these bearings?

An undersize bearing is used when the crankshaft journals have been machined down to correct for wear or damage. This 2.50mm undersize bearing is designed to be used with a crankshaft that has had its main journals ground down by exactly 2.50mm.

What is the main function of main bearings?

Main bearings are critical components that support the crankshaft within the engine block. They create a low-friction surface for the crankshaft to rotate on, while also maintaining precise oil clearance to ensure proper lubrication and prevent metal-on-metal contact.

Do I need to replace all the main bearings when installing this set?

Yes, it is highly recommended to replace all main bearings as a set when rebuilding an engine. This ensures consistent clearances and proper support for the entire crankshaft.

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Trusted Since 1957

Est. 1957

Specifications

Brand: Clevite
Part #: MS1951P25MM
UPC: 027067636584

Clevite Nissan 2960cc 3.0L Eng 1990-93 Main Bearing Set

Name: Clevite Nissan 2960cc 3.0L Eng 1990-93 Main Bearing Set
Brand: Clevite
SKU: clevite-clevite-nissan-2960cc-3-0l-eng-1990-93-main-bearing-set-t14-54406
Price: 42.33 USD
Availability: BackOrder

$42.33

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Clevite main bearing set for Nissan 3.0L engines. Verified fitment for many Infiniti, Nissan, and Mercury models.

Key Features

Fits 1990-1993 Nissan 2960cc 3.0L engines.
This is a 2.50mm undersize main bearing set.
Designed to support crankshaft rotation and maintain proper oil clearance.
Fits a wide range of vehicles including Infiniti J30, M30, QX4, Mercury Villager, Nissan 200SX, 300ZX, D21, Frontier, Maxima, Pathfinder, Pickup, Quest, and Xterra.

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About this part

Product Details

Clevite is a well-known name when it comes to engine components, and this Main Bearing Set is built to their standards. If you're rebuilding the engine in your 1990-1993 Nissan 3.0L, or a compatible Infiniti, Mercury Villager, or Nissan Quest, these bearings are a solid choice for getting your bottom end back in shape. They are designed to handle the loads and stresses of daily driving and more demanding use.

This set is for a 2.50mm undersize bearing. Proper installation is key to ensuring these bearings perform as intended. They work with the crankshaft to support its rotation, and having a well-built set like this helps maintain proper oil clearance, which is crucial for engine longevity. This particular set fits a wide range of vehicles, including models like the Nissan 300ZX, Infiniti J30, and Mercury Villager, among others.