Engines and Components› Engine Bearings
King Engine Bearings
King Engine Bearings BMW S85B50A Main Bearing Set
SKU: K006 MB637CA
Easy — 1–2 hours
Description
They feature King's Bull's Eye Tolerance™ technology, which combines precise machining, advanced overplating, and on-the-spot computerized wall thickness monitoring to ensure exceptional shell-to-shell thickness consistency. This technology sets a new standard for aftermarket bearing accuracy.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | King Engine Bearings |
| Part Number | K006 MB637CA |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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