King Engine Bearings Ford Prod. V8 4.6L/5.4L (Size STD) Performance Main Bearing Set - Size STD

This is King Engine Bearings' Performance Main Bearing Set, sized STD, part number MB5280XP, built for the Ford 4.6L/5.4L V8. In our fitment data it's for the 2011-2012 Ford Mustang GT500. Main bearings ride between the crankshaft and the block, so this set is the load-bearing surface at the bottom end, not a swap you make in the driveway.

Why Upgrade to King Performance Main Bearings

Per King Engine Bearings, here's what this set covers:

• Cut for the Ford 4.6L/5.4L V8 block family, matching the compatibility listed in the title.
• Sized STD, the standard bearing size, not an undersize cut for a reground crank.
• Carries King's own part number, MB5280XP, so you can check it against your build sheet or machinist's spec before you order.

Fitment Notes

Fits 2011-2012 Ford Mustang GT500, per our fitment data. Does not fit Boss 302, GT, or V6 Mustangs.

More Engine parts that fit your Mustang

Install and Honest Talk

Main bearings live between the crankshaft and the block, so putting in a new set means the bottom end is open. This isn't a driveway bolt-on: it's engine-internals work for a shop or a builder comfortable measuring bearing clearance and torquing the mains to spec. Budget for that labor and precision measuring against just running what's already in the engine, since that's the real cost of stepping up to a performance set. What else you need: [VERIFY: torque spec, clearance-check method (plastigauge or similar), and whether any machine work is needed before these bearings go in.]

Specs

• Brand: King Engine Bearings
• Part number: MB5280XP
• Part type: Bearings
• Size: STD
• Quantity: [VERIFY: quantity per set.]

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You can always contact us for any return question at help@anythingcoyote.com.

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Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

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