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Engines and Components› Engine Bearings

Kings Bearings

XP Series Main Bearings

$160.20 $144.18 Save $16.02

SKU: KB-MB5168XP-X

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Special Order
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30 Days Return
INSTALL DIFFICULTY
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Moderate — 2–4 hours

Overview

The Kings Bearings MB5168XP-X is a set of XP Series main bearings designed for Honda F18B, F20B, and F22A/B engines. These bearings are made from tri-metal material and feature a layered copper lead construction with a nickel plate barrier and lead/tin/copper Babbitt. They come in a standard green size and a set includes 5 pairs.
Show original supplier description
The Kings Bearings XP Series Main Bearings (MB5168XP) are engineered for high-performance applications in Honda F18B, F20B, F22A, and F22B engines. These bearings utilize an advanced tri-metal construction, featuring a layered copper-lead core enhanced with a nickel plate barrier and a Babbitt overlay of lead, tin, and copper. This design provides superior strength and durability, capable of handling an average load capacity of 10,200 psi with an average hardness of 18.1HV, surpassing many competitors. These main bearings are manufactured to exceptionally tight tolerances, with all shells matched to within 0.0001 inches, ensuring precise hydrodynamic lubrication and optimal engine performance. They are offered in a standard green size, suitable for specific engine builds. The product count for one quantity is 5 pairs, providing a complete set for engine rebuilding. It is important to note the 'Vehicle Fitment Note: Exc F23,' indicating that these bearings are not compatible with the F23 engine. While the primary fitment is for Honda F-series engines, one source also mentions fitment for Honda H22A, H23A, and F22B engines.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandKings Bearings
Part NumberKB-MB5168XP-X
CategoryEngines and Components
5,000+ Trusted brands
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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