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

The +0.25mm sizing indicates that these bearings are designed for a crankshaft that has been machined down by 0.25mm. This is typically done to correct wear or minor damage on the crankshaft journals during an engine rebuild.

What is the SV coating on these bearings?

The SV (Specialized Vibration) coating is a unique material applied by King Engine Bearings. It's designed to help absorb engine vibrations and reduce friction, particularly during the engine's break-in period.

Do these bearings come with installation instructions?

While this set includes the main bearings, it's essential to consult the official service manual for your specific Mazda engine. The manual will provide detailed instructions, torque specifications, and critical assembly procedures for proper installation.

Specifications

Brand: King Engine Bearings
Part #: MB5870SV0.25
UPC: 611500624940

King Engine Bearings Mazda Shy1/Sh-Vpts (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Mazda Shy1/Sh-Vpts (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mazda-shy1-sh-vpts-size-0-25mm-main-be-t14-771022
Price: 145.97 USD
Availability: BackOrder

$145.97

On Backorder

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

Key Features

This is a +0.25mm undersize main bearing set for Mazda Shy1/Sh-Vpts engines.
Features King's SV (Specialized Vibration) coating for improved vibration dampening and reduced friction.
Constructed with a tri-metal material for strength and conformability.
Designed to provide proper oil clearance with a machined crankshaft.

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About this part

Product Details

If you're rebuilding the bottom end of your Mazda Shy1 or Sh-Vpts engine, a fresh set of main bearings is crucial for proper crankshaft support. These main bearings from King Engine Bearings are specifically sized at +0.25mm, meaning they are designed to be used when the crankshaft journals have been machined down by 0.25mm to clean up wear or damage. King is a well-known name in engine bearings, and this set is built to handle the demands of a rebuilt engine.

This set features King's SV (Specialized Vibration) coating, which is a unique material designed to help absorb vibrations and reduce friction, especially during the critical break-in period. The bearings are made with a tri-metal material that offers a good balance of strength and conformability, allowing them to adapt to the crankshaft surface for optimal oil film support. Using the correct undersize bearings, like this +0.25mm set, ensures a precise fit and proper oil clearance when paired with a machined crankshaft.

When installing these bearings, always refer to the manufacturer's service manual for the correct torque specifications and assembly procedures. Proper installation is key to ensuring the longevity and performance of your engine rebuild.