What does 'STD' size mean for these main bearings?

STD stands for standard size. This means the bearings are manufactured to the original factory specifications and are intended for use when the engine's crankshaft journals have not been machined or worn undersize.

What is the benefit of a lead-free composite material?

The lead-free composite is an environmentally safe material that is ideal for engines with lower to medium load requirements. It helps ensure proper bearing function while meeting environmental standards.

Are these bearings suitable for high-performance or racing engines?

These bearings are specifically noted as ideal for low to medium-load engines. For high-performance or racing applications, you may need to consult King Engine Bearings' performance line for bearings designed for higher stress levels.

King Engine Bearings Volvo 520/B5252 Main Bearing Set - Size STD

Specifications

Brand: King Engine Bearings
Part #: MB612AM
UPC: 611500338908

King Engine Bearings Volvo 520/B5252 Main Bearing Set - Size STD

Name: King Engine Bearings Volvo 520/B5252 Main Bearing Set - Size STD
Brand: King Engine Bearings
Price: 129.52 USD
Availability: InStock

$129.52

Only 7 left in stock

King Engine Bearings main bearing set for Volvo 520/B5252 engines. STD size. Lead-free composite for low to medium-load engines.

Key Features

Fits a wide range of Volvo vehicles including the 850, C30, S40, and V70.
Standard size main bearing set for engines with factory-spec crankshaft journals.
Constructed with a bi-metal aluminum material for durability.
Features a lead-free, environmentally safe composite layer.
Ideal for engines operating under low to medium load conditions.
Designed for Volvo 520, B5252, B5254F/T, and B5234F/T engine families.

⚠️ 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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Product Details

King Engine Bearings has been specializing in engine bearings since 1960, aiming to supply the highest quality available. This main bearing set, part number MB612AM, is designed for a range of Volvo engines including the 520, B5252, B5254F/T, and B5234F/T. It's a standard size set, meaning it's intended for engines where the crankshaft journals are still within their original factory specifications.

This particular set uses a bi-metal aluminum material with a lead-free, environmentally safe composite. This construction is well-suited for engines that operate under low to medium loads, offering reliable performance without harmful lead content. It's a solid option for rebuilding or repairing the bottom end of your Volvo engine, ensuring proper crankshaft support and oil clearance.