What is the difference between standard size and undersize bearings?

Standard size bearings (STD) are designed to fit a crankshaft that is still within its original factory specifications. Undersize bearings are used when the crankshaft has been machined down to correct for wear or damage, requiring a slightly smaller bearing to maintain the correct clearance.

Do I need to machine my crankshaft to install these bearings?

These are standard size bearings, so they are intended for use with a crankshaft that has not been machined undersize. If your crankshaft has been previously repaired or shows significant wear, it may require machining and undersize bearings. Always check your crankshaft's condition and specifications before installation.

What else might I need when replacing main bearings?

When replacing main bearings, it's often recommended to also replace the connecting rod bearings, check the crankshaft for straightness and wear, and ensure proper oil pump function. You'll also need assembly lube to coat the bearings before installation.

ACL Ford Prod. V6 183 1986-96 Engine Crankshaft Main Bearing Set

Specifications

Brand: ACL
Part #: 4M1702A-STD

ACL Ford Prod. V6 183 1986-96 Engine Crankshaft Main Bearing Set

Name: ACL Ford Prod. V6 183 1986-96 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-ford-prod-v6-183-1986-96-engine-crankshaft-main-bearing-set-t14-630619
Price: 26.97 USD
Availability: BackOrder

$26.97

On Backorder

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

Fits 1986-2007 Ford Taurus. ACL crankshaft main bearing set for the 3.0L V6 engine. Essential for proper engine lubrication and performance.

Key Features

Fits 1986-2007 Ford Taurus, 1986-1997 Ford Aerostar, 1991-2008 Ford Ranger, 1995-2000 Ford Windstar, and 1986-2005 Mercury Sable.
Designed for the 3.0L V6 OHV engine (VIN U, 1, V).
Standard size (STD) replacement bearings.
Supports the crankshaft and maintains proper oil clearance.
Reduces friction and wear within the engine block.
From ACL, a well-known manufacturer of engine bearings.

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Will this fit your vehicle?

Product Details

You get a full set of crankshaft main bearings in this kit, which means one box handles the essential components for your engine rebuild or repair. These bearings are crucial for supporting the crankshaft and ensuring it spins smoothly within the engine block. Proper main bearings reduce friction and wear, which is vital for the longevity and performance of your Ford 3.0L V6 engine.

This set from ACL is built to meet the original equipment specifications for your 1986-1996 Ford Taurus, Aerostar, Ranger, Windstar, or Mercury Sable. They are designed as a standard size replacement, meaning they'll fit directly onto your crankshaft without needing any machining, assuming your crankshaft is within factory tolerances. Using well-built bearings like these helps maintain correct oil clearances, which is key to keeping your engine running cool and efficiently.

When you're rebuilding an engine or addressing oil pressure issues, replacing the main bearings is a critical step. This kit ensures you have the right parts to get the job done correctly, helping to restore your engine's health and reliability.