What does the +0.25mm sizing mean for these main bearings?

The +0.25mm sizing indicates that these bearings are intended for use when the crankshaft journals have been machined down by 0.25mm. This is a common practice during engine rebuilds to ensure a proper fit and oil clearance on crankshafts that have been worn or resurfaced.

What is the construction of these main bearings?

These main bearings feature a bimetal construction with an aluminum silicon base. This type of material is chosen for its durability and ability to handle the loads and temperatures found within an engine's bottom end.

Are these bearings sold individually or as a set?

This product is a main bearing set, meaning it includes all the necessary main bearings required for a complete engine rebuild of the specified GMC V6 engines.

Specifications

Brand: King Engine Bearings
Part #: MB4080SI1.25
UPC: 611500432910

King Engine Bearings GMC 2.8L/3.4L V6 173Ci/207Ci (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings GMC 2.8L/3.4L V6 173Ci/207Ci (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-gmc-2-8l-3-4l-v6-173ci-207ci-size-0-25-t14-770354
Price: 48.99 USD
Availability: BackOrder

$48.99

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King Engine Bearings main bearing set for GMC 2.8L/3.4L V6 engines. Size +0.25mm.

Key Features

Fits Buick Century, Regal, Rendezvous, Skylark; Cadillac Cimarron; Chevrolet Beretta, Camaro, Cavalier, Celebrity, Corsica, Equinox, Impala, Lumina APV, Lumina, Malibu, Monte Carlo, S10 Blazer, S10, Venture; GMC S15 Jimmy, S15, Sonoma; Isuzu Pickup, Rodeo, Trooper; Jeep Cherokee, Comanche, Wagoneer; Oldsmobile Achieva, Alero, Cutlass Ciera, Cutlass.
Main bearing set for GMC 2.8L, 3.4L V6 173ci, 207ci engines.
Bearings are sized +0.25mm, suitable for use with a machined crankshaft.
Constructed with a bimetal design featuring an aluminum silicon base.

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About this part

Product Details

When you're rebuilding the bottom end of your GMC 2.8L or 3.4L V6 engine, the main bearings are critical for smooth crankshaft rotation. This main bearing set from King Engine Bearings is built with a bimetal construction, using an aluminum silicon base for durability. These bearings are designed to handle the stresses of daily driving and more demanding use, ensuring your crankshaft stays properly supported.

This set is sized at +0.25mm, meaning it's intended for use when the crankshaft journals have been machined down by 0.25mm during a rebuild. King Engine Bearings is a well-known name in engine components, and this set is a solid option for restoring or enhancing your engine's internal health. They fit a wide range of vehicles, including models like the Chevrolet Camaro, Buick Century, and GMC Sonoma, among many others.