What is the function of main bearings in an engine?

Main bearings are crucial components that support the crankshaft within the engine block. They create a low-friction surface for the crankshaft to rotate on, while also maintaining proper oil clearance to ensure adequate lubrication and oil pressure throughout the engine.

What does 'standard size' mean for these bearings?

Standard size bearings are manufactured to the original equipment manufacturer's (OEM) specifications. This means they are intended to be used with a crankshaft that has not been machined undersize, ensuring a direct fit without the need for crankshaft grinding.

What else might I need when installing main bearings?

When replacing main bearings, it's essential to have the correct service manual for your 1991-1993 Nissan NX. You'll also need proper engine assembly lubricant to coat the bearings and crankshaft journals before installation to ensure adequate oil flow on startup.

1991-1993 Nissan NX Main Bearing Set

Name: ACL Nissan SR20DE/DET (2.0L) Standard Size Main Bearing Set
Brand: ACL
SKU: acl-acl-nissan-sr20de-det-2-0l-standard-size-main-bearing-set-t14-78508
Price: 16.13 USD
Availability: BackOrder

ACL Nissan SR20DE/DET (2.0L) Standard Size Main Bearing Set

$16.13

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1991-1993 Nissan NX. ACL standard size main bearing set for SR20DE/DET engines.

Key Features

Fits 1991-1993 Nissan NX.
Standard size main bearing set for Nissan SR20DE and SR20DET engines.
From ACL, a well-known manufacturer of engine bearings.
Designed to fit the original crankshaft dimensions.

Secure CheckoutFast Shipping631-982-0042

Product Details

Already running an SR20DE or SR20DET engine in your 1991-1993 Nissan NX? This standard size main bearing set from ACL is the next piece of the puzzle for a solid engine rebuild. Main bearings are critical components that sit between the crankshaft and the engine block, allowing the crank to spin smoothly while supporting its weight and the forces from combustion. When you're rebuilding or refreshing an engine, especially one that's seen some miles or is being pushed harder, replacing these bearings is a key step to ensuring long-term reliability and proper oil pressure.

ACL has been making engine bearings for a long time, and this set is built to meet the demands of the SR20 engine. They're made to the correct dimensions for a standard size crankshaft, meaning they'll fit right in without needing to machine the crank. Proper installation and oil clearance are crucial for these bearings to do their job effectively, so make sure you're following the service manual for your NX when you put them in. This set is a well-built option for anyone looking to get their SR20 back in top shape.