SKU: 83458496940

King Engine Bearings Connecting Rod Bearing Set for 1999-2001 Oldsmobile Alero (CR4255SI)

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Description

King Engine Bearings Connecting Rod Bearing Set for 1999-2001 Oldsmobile Alero (CR4255SI)Carrying on a tradition of durability and dependability, KING Bi Metal (aluminum) engine bearings feature 100% lead free aluminum silicon. King has 4 different variations of their aluminum based bearings: (AM Series) K 783 Standard aluminum based material, equivalent to SAE 783, used for low and medium load engines. King AM Series main and rod bearings are recommended for street or marine applications. They have superior embeddability, which provides

Carrying on a tradition of durability and dependability, KING Bi-Metal (aluminum) engine bearings feature 100% lead-free aluminum silicon.

King has 4 different variations of their aluminum based bearings:

(AM-Series) K-783 -Standard aluminum based material, equivalent to SAE-783, used for low and medium load engines.

King AM-Series main and rod bearings are recommended for street or marine applications. They have superior embeddability, which provides greater macro-particle and reduces scratching of the crank journals and tearing or weakening of the Babbitt overlays. The direct replacements feature tolerance control up to +/- .0001—and they're lead-free, making them environmentally friendly and user-safe. Order the King AM-Series rod bearings in the application designed for proper fitment with your vehicle.

(SI-Series) K-788 -Aluminum based material, strengthen by 2.5-3% silicon, for medium load engines or nodular cast iron crankshafts.

King SI-Series main and rod bearings are recommended for OE applications. These replacement bearings are designed for aftermarket gasoline or diesel engine rebuilding—and performance engines with factory crankshafts. The bearings have an improved crankshaft finish for reducing microscopic ferrite peaks on improperly ground or polished nodular cast iron crankshafts. King SI-Series main and rod bearings feature improved oil clearance to reduce wear and increase engine life, which in turn reduces operating noise, vibration, and excess oil flow. Order the bearing set designed for fitment on your make and model.

(SM-Series) K-789 -Aluminum alloy bonding layer. The strongest aluminum based material. The alloy is strengthened by addition of Manganese and Chromium (Mn, Cr), Used for high load applications.

For high load and performance applications, King SM-Series main and rod bearings are the strongest aluminum-based material offered by King. The alloy is strengthened by the addition of manganese and chromium. SM-Series crankshaft main bearings feature a traditional steel-backing, aluminum bonding layer, and the aluminum bearing alloy. They are available for a wide variety of vehicle and engine applications.

(HP-Series) K-787 - King HP-Series rod bearings were developed mainly for drag race applications needing a material harder than the Babbitt top layer. These applications demanded a structure that could withstand high loads for short durations and still offer higher embeddability and compatibility. In response, King developed the HP-Series featuring the Alecular metal structure.

The HP-Series is also suited for many performance applications with nodular cast iron crankshafts, such as street, strip, and some levels of Circle Track racing.

HP-Series bearings are particularly suitable for the following cases:

  • When a tri-metal bearing's Babbitt overlay extrudes over the sides, migrates to one end, or is physically removed by the crankshaft
  • When the intermediate layer of a tri-metal bearing is exposed, damaging the crank journal and requiring expensive grinding or replacement
  • When contaminants enter the oil stream, scratching and damaging the crankshaft journals


Check your bearing size using our fitment calculator here
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 83458496940

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JES
Phoenix, US
★★★★★ 4
Heavy
Style: Go Mango
Too heavy for a puppy
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Reviewed in the United States on March 4, 2026
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JMR
Phoenix, US
★★★★★ 5
Strong chew toy favorite!!!
Style: I-Squeak Cone
We’ve bought 3 for our Pit Mix and each time she gets a new one, it’s her favorite toy. Not indestructible but holds up well to super chewers.
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Reviewed in the United States on June 8, 2026
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Amazon Customer
Charlottesville, US
★★★★★ 1
Defective squeaker
Style: Go Mango
The squeaker did not work on arrival and this is the 3rd one we have purchased assuming it would last at least a couple months. Very disappointing since it is our dogs most favorite toy ever. The squeaking makes her so happy.
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Reviewed in the United States on March 20, 2026
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Lynn Mahoney
Charlottesville, US
★★★★★ 3
NOT For Aggressive Chewers, Otherwise Great!
Style: I-Squeak Cone
Not for aggressive chewers. My dog had it torn apart in under an hour. It bounced and squeaked great, looked cute, and was a good size. I would consider buying this again for his birthday, because that's when I buy fun, more expensive but less great toys. Otherwise I would not buy again, because of how quickly he had it torn apart.
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Reviewed in the United States on February 14, 2026
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Vanessa Haneline
Lake Worth, US
★★★★★ 5
Super durable enjoyable toy for the Doggo
Style: I-Squeak Cone
I purchased this squeak toy for my Dachshund and he is very destructive. He can destroy a squeak toy like its his only purpose in life but he has had this toy for a few months now and he loves it. We play many hours of fetch with this and he has yet to chew it up or wear out the squeaker. He has not yet been able to chew any holes in it and plays with it for hours. One of the things I like best about it is he loves to hide his toys under furniture and cannot get this particular toy under the couch or entertainment center where he will bark non stop until you retrieve it. He plays with it at home and is perfect for our camping trips and trips to Grandmas as well and still comes back safe and intact.
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Reviewed in the United States on June 3, 2026

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