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King Engine Bearings MB 551AM1.25 Main Bearing Set for Toyota 3K 4K Engines

(1968-1979 Toyota Corolla; 1981-1984 Toyota Starlet)

Part of: King Engine Bearings Main Bearing Set Oversize

Other options in this family: King Engine Bearings MB5835SI0.5 King Engine Bearings MB5557SI0.75 King Engine Bearings MB4102SI0.25 King Engine Bearings MB5280SI0.5 King Engine Bearings MB5770SI0.25

Manufacturer

Picture for manufacturer King Engine Bearings

Part Number

MB 551AM1.25
12 reviews
Sale Price

$42.64

Estimated ship date Tuesday, November 24

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Product Details

The King Engine Bearings MB 551AM1.25 is a complete crankshaft main bearing set engineered for Toyota 3K and 4K series engines. This set is sized at 1.25mm undersize, making it the correct choice for engines that have undergone crankshaft grinding to restore worn journals to specification.

King Engine Bearings is an industry-recognized manufacturer of precision engine bearings, supplying OEM and aftermarket customers worldwide. Their bearings are produced to exacting tolerances, ensuring proper oil clearance, reliable load distribution, and long service life.

Key Features:

  • Complete main bearing set for Toyota 3K and 4K engines
  • 1.25mm undersize — designed for reground crankshafts
  • Manufactured to OEM tolerances for precise fit and proper oil film clearance
  • High-quality tri-metal or bimetal construction for durability and wear resistance
  • Engineered for consistent performance under demanding operating conditions
  • Meets or exceeds original equipment specifications

King Engine Bearings' AM Series bearings are precision-manufactured using advanced metallurgy to provide excellent fatigue strength, embedability, and conformability — critical properties for long crankshaft and bearing life. This main bearing set is an essential component during any engine rebuild or crankshaft resurfacing service on Toyota 3K or 4K powerplants.

Products specifications

Fits

1968-1979 Toyota Corolla; 1981-1984 Toyota Starlet

Undersize

1.25

Material

bimetal (aluminum base)

Great and user friendly

Good price .easy ordering

The order was easy and shipment was fast.They had what i was looking for at a great price.

Great prices and service. Quality parts for the best price online. Will be my first choice form now on.

My 2nd order from Autoplicity, because I had a good experience the first time. Usually if you find a low price online, you suffer on the shipping. Not with Autoplicity, their shipping and processing times are very fast which is one of the reasons I will keep coming back!

Good price but on the Google search shipping was listed as7.98 and in reality was over10.

good service

The prices and selection are best. The cutomer service rep. did a good job in handling all my questions, and placed my order. I will be using Autoplicity for all my auto parts.

Great Seller. Fast Shipping and great prices!

Quick and easy! Love the Amazon pay feature!

Awesome prices on hard to find auto parts...quick shipping..A+!

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