ACL® Bearings 4B1946H-STD - Race™ Racing Connecting Rod Bearing Set
SKU: 56822070820

ACL® Bearings 4B1946H-STD - Race™ Racing Connecting Rod Bearing Set

Sale price$56.66 Regular price$62.95
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Description

ACL® Bearings 4B1946H-STD - Race™ Racing Connecting Rod Bearing SetEngine Fitment: B16A, B17A1, B18A, B18A1, B18B1, B18B2, B20A (SOHC), B20B, B20Z, F18B, F20B. Race Connecting Rod Bearing Set (4B1946H STD) by ACL. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Race Series engine bearings. ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. Race Series rod and main bearings are

Engine Fitment:

B16A, B17A1, B18A, B18A1, B18B1, B18B2, B20A (SOHC), B20B, B20Z, F18B, F20B.

Race™ Connecting Rod Bearing Set (4B1946H-STD) by ACL®. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Race Series engine bearings. ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. Race Series rod and main bearings are standard components in race engines that have set records and won championships from Mexico to Bonneville - from sport compact drift racing to small block NASCAR, IHRA and NHRA cmpetitions. The unique combination of design, metallurgy and engineering provides Race Series performance bearings witht he endurance and capability to perform where others cannot.

Specifications:

Size: Standard
Min Shaft Size: 1.7709"
Max Shaft Size: 1.7717"
Min Tunnel Size: 1.8898"
Max Tunnel Size: 1.8907"
Max Wall Size: 0.0592"
Max Overall Length: 0.768"
Oil Clearance Size: Standard
Quantity: 8 Pieces
Half Type: Identical Halves

Features:

  • High strength overlay plate with reduced thickness for improved fatigue properties
  • Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing
  • Increased crush for improved bearing retention
  • Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing
  • Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films
  • 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings
  • Tight consistent wall tolerances to help you maintain consistent clearances
  • Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts

ACL® Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. Race Series rod and main bearings are standard components in race engines that have set records and won championships from Mexico to Bonneville - from sport compact drift racing to small block NASCAR, IHRA, and NHRA cmpetitions. The unique combination of design, metallurgy, and engineering provides Race Series performance bearings with the endurance and capability to perform where others cannot. These exceptional bearings are available for a variety of American, Asian, and European performance engines.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 56822070820

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Whiting, US
★★★★★ 5
Supervise. Can chew off pieces.
Flavor Name: Chicken & Original, Size: Small
Soft nylabone. Tough yet chewy. My dog loves them.
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Reviewed in the United States on February 6, 2026
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New York, US
★★★★★ 5
My dogs love
Flavor Name: Chicken & Original, Size: X-Small, Flavor Name: Chicken & Original, Size: X-Small
They love the blue one for some reason, but its a great size. They are durable for heavy chewing. They can play with them for a long time and dont get bored
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Reviewed in the United States on May 8, 2026
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Hawkeye
Pawtucket, US
★★★★★ 4
Great, except for the edible one
Flavor Name: Chicken & Original, Size: X-Small
My elderly dog and my puppy both love these bones. They are 9lbs and 4.5lbs respectively and this is a good size for them. They also like the next size up and it is manageable for them as well. The only gripe I have is the edible one, it comes apart in larger chunks (that are still very hard) and my dogs swallowed a few before I noticed how large the pieces were. I decided to throw that one away. Its been over a week and no negative side effects so maybe just me being overly cautious. For the price (gold box) just the other two bones were worth it. They last pretty much forever for my dogs, and I would say they are moderate chewers. 4 stars due to the issue with the edible bone.
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Reviewed in the United States on June 4, 2013
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Sherri ward
West Palm Beach, US
★★★★★ 5
Highly recommend
Flavor Name: Chicken & Original, Size: X-Small
My small dog likes a lot thank you for having i be buying more to give to my family too ❤️ buy you dont want to miss out
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Reviewed in the United States on April 18, 2026
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ratgirl
Phoenix, US
★★★★★ 5
My little dog loves these.
Flavor Name: Bacon & Peanut Butter, Size: X-Small, Flavor Name: Bacon & Peanut Butter, Size: X-Small
These are the perfect size, texture, and density for my 9 lb chihuahua (rescued, of course! :)) He has a tiny mouth with tiny teeth and very little bite force so he needs a chewybone with a lot of give. I've been impressed with how clean these help keep his teeth (it's the saliva flow during the chewing that breaks down any lingering debris and the action of the nubs against the teeth and gums helps to rub off tartar and plaque, if you care to know the *why* behind it.) These are ideal for dogs like mine, and since small dogs tend to have a lot of dental problems due to overcrowded mouths, I couldn't be more grateful that these exist. These would probably also be good for the many rescued puppy mill dogs, who are often small breeds, who have dental issues due to malnutrition and exacerbated by overbreeding, especially in females whose bodies often rob the jaw bones of calcium for the sake of the fetuses they carry, when the pregnant dogs aren't given an appropriately enriched gestational diet. That leads to the little bleppy tongues sticking out all over that we often see in the canine survivors of back yard breeding operations, puppy mills, and the like. There are a lot of these dogs being rescued and adopted in the U.S. right now and these would likely be ideal for them. (In case any adopters of these little survivors are reading this. :)) These are for gentle chewers only, and there are a lot of dogs who fall into that category. They aren't , however, for dogs with an average bite or higher, which is where some of the complaints you hear about these are coming from. Know your dog's chewing needs and buy the size that fits their mouth, tooth type, and bite strength. My dog barely puts a dent in these after a year or more of chewing (watch for any degradation of the plastic and replace as needed, of course.) For little dogs like mine, these are just fantastic and I hope Nylabone keeps making these type of chew toys to keep our dogs healthy. :)
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Reviewed in the United States on February 22, 2019

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