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King Engine Bearings MB 546AM0.25 AM-Series Main Bearing Set Mitsubishi G25B 4G54 4G53 0.25mm Undersize

(Dodge Challenger 1978-83, Caravan 1984-87, D50 1979-82, Ram 50 1983-89, Colt 1974-80, 1984, 600 1983-85, Raider 1987-89, Power Ram 50 1983-86 + 22 more models)

Manufacturer

Part Number

MB 546AM0.25
Sale Price

$32.39

Estimated ship date Sunday, November 22

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No Hassle Returns

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Live-in-stock inventory

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Product Details

The King Engine Bearings MB 546AM0.25 is an AM-Series bi-metal main bearing set designed for Mitsubishi G25B, 4G54, and 4G53 engines. This set is manufactured to a 0.25mm undersize specification, making it ideal for engine rebuilds where the crankshaft journals have been machined to the first undersize.

AM-Series Bi-Metal Aluminum Construction:

  • Material: 100% lead-free bi-metal aluminum construction, equivalent to SAE-783 (K-783 standard), suited for low and medium load engines
  • Superior Embedability: Aluminum alloy material provides greater macro-particle embedability, reducing scratching of crank journals and preventing tearing or weakening of Babbitt overlays
  • Precision Tolerance: Manufactured to tight tolerance control of +/- .0001" for accurate oil clearance and proper crankshaft fit
  • Lead-Free Formula: Environmentally friendly and user-safe construction with no lead content
  • Street & Marine Rated: AM-Series bearings are recommended for street and marine engine applications
  • Undersize: 0.25mm (approximately 0.010") undersize for use with reground crankshafts

King Engine Bearings is a world-class developer and manufacturer of precision engine bearings, applying knowledge gained from motorsport to deliver reliable performance in both everyday and performance engines. The MB 546AM0.25 main bearing set is a direct-replacement solution for Mitsubishi G25B, 4G54, and 4G53 engine rebuilds requiring first undersize bearings.

Products specifications

Fits

Dodge Challenger 1978-83, Caravan 1984-87, D50 1979-82, Ram 50 1983-89, Colt 1974-80, 1984, 600 1983-85, Raider 1987-89, Power Ram 50 1983-86, Aries 1981-85, Conquest 1984-86, 400 1982-83, Mini Ram 1984-88 + 19 more models

Flange Oversize

FL ON MAX

Material

bimetal (aluminum base)

Undersize

0.25

Title

King Bearings

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Good so far.

Autoplicity had the best price on the item I wanted. Order process was a little odd. I didn't get any confirmation of my order being placed. So 2 days later I sent an email asking if they had received it. They answered me very quickly, sent me an order confirmation with tracking number, and it turns out my item had already shipped so I had it the next day. So ordered 5/1 and had it in my hand 5/4.

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Fast shipping! Good prices! Will recommend to others

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