My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

King Engine Bearings MB5505SI030 SI-Series Main Bearing Set Ford Oversize - V8 351ci 5.8L 400ci 6.6L 030

(Ford F-150 1977-96, Mustang 1969-73, 1995, F-250 1977-97, Bronco 1978-96, Thunderbird 1977-79, F-350 1977-97, Galaxie 500 1969-74 + 44 more models)

Part of: King Engine Bearings SI-Series Main Bearing Set Oversize

Other options in this family: King Engine Bearings MB5382SI King Engine Bearings MB7719SI King Engine Bearings MB5889Sx0.25 King Engine Bearings MB5651SI King Engine Bearings MB5701SI0.5

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB5505SI030
4 reviews
Sale Price

$39.39

Estimated ship date Monday, November 23

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The King Engine Bearings MB5505SI030 is a SI-Series bi-metal silicon aluminum main bearing set designed for Ford V8 351ci (5.8L) and 400ci (6.6L) 16-valve engines. This set is precision-engineered for OE replacement and engine rebuilding applications, delivering reliable performance under medium-load operating conditions.

Key Features:

  • Bi-Metal Silicon Aluminum Construction: Aluminum-based bearing material strengthened with 2.5–3% silicon for enhanced strength and durability
  • Lead-Free Material: Environmentally responsible formulation that meets modern standards without compromising performance
  • Optimized for Nodular Cast Iron Crankshafts: Specially suited for medium-load engines equipped with nodular cast iron crankshafts
  • Improved Oil Clearance: Engineered oil clearance reduces wear, extends engine life, and minimizes operating noise, vibration, and excess oil flow
  • Improved Crankshaft Finish Compatibility: Designed to work with factory crankshafts, including those with microscopic ferrite peaks from improper grinding or polishing
  • 030 Oversize: Machined to 0.030" undersize for use with reground crankshafts
  • Sold as a Complete Set: Includes all required main bearings for a full engine rebuild

King Engine Bearings' SI-Series is purpose-built for OE replacement and aftermarket gasoline engine rebuilding, offering a precise fit, optimized performance, and dependable durability in Ford small block and medium block V8 applications.

Products specifications

Fits

Ford F-150 1977-96, Mustang 1969-73, 1995, F-250 1977-97, Bronco 1978-96, Thunderbird 1977-79, F-350 1977-97, Galaxie 500 1969-74, F-100 1977-79, 1981, Fairlane 1969-70, Ranchero 1969-79, Torino 1969-76, Falcon 1969-70 + 39 more models

Undersize

030

Material

bimetal (aluminum silicon base)

Flange Oversize

FL ON MAX

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Title

King Bearings

Nice quality washer pump with metal housing. I rigged it with a non-standard reservoir on a Jaguar '85 XJS V12, tying off the pump below and to the side of the reservoir. A 1/4 inch inner diameter reservoir hose out, spliced by sliding the 1/4 inch hose (included) inside the larger hose and using a clamp (not included). The side hose from pump out to window sprayers. It's quiet and powerful. It's nice to have long 12V cables coming from the pump so only the electrical connections are needed to be made with the 2 wire splicers.

had to place order twice - internal error

REALLY HARD ITEM TO FIND VERY SATISFIED

Great price, exactly what I needed. I will definitely return to Autoplicity for future autoparts orders! Thanks!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy