What does the +0.75mm sizing mean for these main bearings?

The +0.75mm sizing indicates that these bearings are intended for a crankshaft that has been machined down by 0.75mm. This is common when rebuilding an engine to correct wear or damage on the crankshaft journals.

What is the construction of these main bearings?

These bearings feature a bimetal construction with an aluminum base. This design is chosen for its ability to handle loads and resist wear effectively within the engine.

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 M30 block.

King Engine Bearings BMW M30B35/25/28/32/33/35 (Size +0.75mm) Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB770AM0.75
UPC: 611500180729

King Engine Bearings BMW M30B35/25/28/32/33/35 (Size +0.75mm) Main Bearing Set

Name: King Engine Bearings BMW M30B35/25/28/32/33/35 (Size +0.75mm) Main Bearing Set
Brand: King Engine Bearings
Price: 96.78 USD
Availability: InStock

$96.78

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King Engine Bearings main bearing set for BMW M30 engines. Size +0.75mm. Verified fitment.

Key Features

Fits a wide range of BMW M30 engines, including 2.8 Bavaria, 535i, 635CSi, and 735i models.
Main bearing set sized at +0.75mm for use with a machined crankshaft.
Constructed with a bimetal design featuring an aluminum base for durability.
Designed to help maintain proper oil clearance for crankshaft protection.

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Product Details

If you're rebuilding the bottom end of your BMW M30 engine, a fresh set of main bearings is crucial. This set from King Engine Bearings is specifically sized at +0.75mm, meaning it's intended for crankshafts that have been machined down by that amount. These bearings are built with a bimetal construction, using an aluminum base for good load-carrying capacity and wear resistance.

King Engine Bearings are a popular choice for engine builds because they offer a well-built component that performs reliably. The bimetal design helps ensure proper oil film formation, which is essential for protecting your crankshaft and extending the life of your engine. This set is designed to fit a wide range of BMW M30 engines, including models like the 535i, 635CSi, and 735i, among others.

When installing these bearings, it's important to follow the manufacturer's specifications for crankshaft journal preparation and bearing clearance. Using the correct torque values and ensuring the crankshaft is clean will help you get the best performance and longevity out of this set.