King Engine Bearings Ford EcoBoost 3.5L/3.7L V6 Main Bearing Set - Size STD

King Engine Bearings built this main bearing set for the Ford 3.5L/3.7L V6, sized STD (standard), covering the 2011-2014 F-150 Base and the 2011-2017 Mustang V6. Main bearings sit between the crankshaft and the block and take the load on every rotation of the engine, so they are a foundational part of any bottom-end build or repair.

Why Upgrade to a King Main Bearing Set

• Sized STD, meaning it is built for a crankshaft still at its stock dimensions, not one that has been machined undersize.
• Cross-references to part number MB4549SI, so you can check it against your own parts list or a machine shop's spec sheet before you order.
• Matched to the 3.5L/3.7L V6 shared between the F-150 Base and Mustang V6, per our fitment data.

Fitment Notes

Covers the 2011-2014 Ford F-150 Base and the 2011-2017 Ford Mustang V6, per our fitment data. Does not fit the F-150 Raptor, or the Mustang EcoBoost, GT, GT350, GT500, or Boss 302.

More Engine parts that fit your truck or Mustang

Install and Honest Talk

King's listing for this set does not include install steps, bearing clearance specs, torque values, or what tools the job takes, and we are not going to guess at any of it. [VERIFY: install steps, bearing clearance and torque specs, tools required.] This is a machined engine component, not a bolt-on accessory, so treat any assumption about what the job involves as unconfirmed until you have the real numbers in hand. What else you need: check the included instructions, or King's own spec sheet, for whether specific studs, clearance work, or a machine shop check are required before you install it.

Specs

• Brand: King Engine Bearings
• Part number: MB4549SI
• Part type: Bearings
• Size: STD

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Free US shipping over $99

Orders over $99 ship free by ground to the lower 48 states. Alaska, Hawaii and Canada are not included; shipping to those addresses is calculated at checkout. Some oversize or heavy parts (long-tube exhausts, bumpers, full lift kits) go freight instead of parcel: free to a commercial address with a loading dock, and residential freight delivery carries an additional charge.

When it ships

Parts ship direct from the distributor warehouse that stocks them, so dispatch timing depends on the part, not on a single cutoff. You get a confirmation with tracking as soon as it leaves, and tracking shows the delivery estimate for your address. If a part is backordered we email you an expected availability date.

Missing or damaged items

Report a short shipment or shipping damage within 5 business days of delivery. For a packing error, send us the date or package code printed on the label along with the part number so we can trace it with the warehouse.

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at help@anythingcoyote.com or fill our our contact form. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. 

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

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.

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.

Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.