What does the +0.50mm sizing mean for these main bearings?

The +0.50mm sizing indicates that these bearings are intended for use when the crankshaft journals have been machined down by 0.50mm. This is a common practice during engine rebuilding to ensure proper oil clearance with worn or resurfaced journals.

Are these bearings suitable for high-performance or heavy-duty applications?

These bearings are made with a lead-free composite and are ideal for low to medium-load engines. For high-performance or very heavy-duty applications, it's always best to consult King Engine Bearings' specific product lines designed for those demands.

What is the benefit of a bi-metal aluminum material for engine bearings?

Bi-metal aluminum construction offers a good balance of strength and conformability. This allows the bearing to adapt slightly to the crankshaft surface while providing a durable bearing surface that helps manage heat and friction.

Specifications

Brand: King Engine Bearings
Part #: MB5559AM0.5
UPC: 611500204425

King Engine Bearings Isuzu 4Zb1 (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Isuzu 4Zb1 (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-isuzu-4zb1-size-0-50mm-main-bearing-se-t14-770830
Price: 50.12 USD
Availability: BackOrder

$50.12

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Fits 1986-1995 Isuzu Pickup. King Engine Bearings MB5559AM0.5 Main Bearing Set. Size +0.50mm. Lead-free composite for reliable engine performance.

Key Features

Fits 1986-1995 Isuzu Pickup, 1989-1993 Isuzu Amigo, 1985-1989 Isuzu Impulse, and 1986-1987 Isuzu Trooper.
Main bearing set sized at +0.50mm for use with machined crankshaft journals.
Constructed with a lead-free, environmentally safe composite material.
Features a bi-metal aluminum construction.
Suitable for low to medium-load engine applications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

Built with a lead-free, environmentally safe composite material, these main bearings from King Engine Bearings are specifically made for your Isuzu 4ZB1 engine. They are a bi-metal aluminum type, ideal for engines that handle low to medium loads, offering a solid foundation for your engine's rotating assembly.

King has been a specialist in bearings since 1960, focusing on supplying well-built engine bearings. This set is sized at +0.50mm, meaning it's intended for crankshaft journals that have been machined down by 0.50mm during an engine rebuild. Using the correct bearing size is crucial for maintaining proper oil clearance and ensuring your engine runs smoothly and lasts longer.