SKU: 22310997484

ACL Race Series Bearings BMW N55B30 2979cc Inline6 DOHC 4v Turbo, Conrod Bearing, extra oil clearance (0.025mm) 6B1584HX

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Description

ACL Race Series Bearings BMW N55B30 2979cc Inline6 DOHC 4v Turbo, Conrod Bearing, extra oil clearance (0.025mm) 6B1584HXABOUT ACL For over 70 years precision engine bearings have been manufactured in Launceston, Tasmania, Australia. During this time ACL has been a major OEM supplier to the Australian & International automotive industry, whilst providing an extensive replacement product range for the global aftermarket. Today ACL produces one of the largest aftermarket range of engine bearings and has a global reputation for robust metallurgy, quality, precision,

ABOUT ACL

For over 70 years precision engine bearings have been manufactured in Launceston, Tasmania, Australia.

During this time ACL has been a major OEM supplier to the Australian & International automotive industry, whilst providing an extensive replacement product range for the global aftermarket.

Today ACL produces one of the largest aftermarket range of engine bearings and has a global reputation for robust metallurgy, quality, precision, innovation and performance.

ACL has a long and rich history in motorsport – it is in our DNA. The ACL RACE Series Performance Engine Bearings of today has a strong pedigree in motor racing that traces its roots back to the 1960’s with the manufacture of engine bearings for use in the world conquering Brabham Formula 1.

Further experience in the Australian Supercars Championship, drag racing, speedway, drifting & rally with its range of RACE Series Performance Engine Bearings being the first choice for discerning engine builders the world over.

The ACL RACE Series Performance Engine Bearing offering covers over 200 varied engine applications covering a wide range of performance engine bearings for Australian, American, Japanese, Korean & European applications. The range continues to expand to cover new engine releases.

The company has a high degree of vertical integration encompassing: tooling & product design, bearing strip manufacture, tooling & machine manufacture as well as the complex manufacturing processes & systems required to produce the final product.

ACL's Business Management Systems hold the internationally recognized ISO9001: 2015 Quality Management System, ISO14001: 2015 Environmental Management System & ISO451001: 2018 Occupational Health & Safety Management System certification.

Description: BMW N55B30 2979cc Inline6 DOHC 4v Turbo

Capacity: 2979 CC

Cylinders: 6

Bore Size: 3,3071 in / 84 mm

Stroke: 3,5276 in / 89,6 mm

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.
CONROD BEARING - STDHX - EXTRA OIL CLEARANCE SET (-0.025MM)
  • High performance Trimetal engine bearings
  • Designed to withstand higher RPM conditions
  • High strength overlay plate with reduced thickness for improved fatigue properties
     
    Specifications for STD size only

    Sizes STD
    Oil Clearance
    Half Type Upper & lower
    Material F781
    Min. Std Shaft Size 49,973 mm / 1.9674 in
    Max. Std Shaft Size 49,993 mm / 1.9682 in
    Min. Std Tunnel Size 53,6 mm / 2.1102 in
    Max. Std Tunnel Size 53,616 mm / 2.1109 in
    Max Wall at Crown 1,78 mm / 0.0701 in
    Max Overall Length
    17,55 mm / 0.6909 in
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: 22310997484

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4.8 ★★★★★
Based on 26 reviews
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Product Reviews
L
Verified Purchase
Loving life!
Fort Morgan, US
★★★★★ 1
No. Just no. My own dog shamed me…
Size: Medium, Style: Beef, Size: Medium, Style: Beef
My German Shepherd likes squeaky balls. She has lots of them. Most are similar to a tennis ball. By the way, don’t give your dog an actual tennis ball. The outer material is made for grip for tennis. It’s abrasive and is not good for your dog’s teeth enamel at all. Anyway, for $14.99, I thought I’d give this one a try. The pictured packaging alone was an eye grabber. The picture you see on Amazon is a cardboard with item specific info on the card: flavor, size, what it is (squeaky ball). The pictured product also has a hole in the card to secure and present the item the card describes. Even two color coded red zip ties securing the ball in the card hole. Awesome presentation and frankly that’s what made me give this a shot. So, as far as the presented product/packaging on Amazon, great job! I even sent a link to a buddy and he bought one too. Well, I cannot speak for everyone, but what I received was what’s pictured with my review. A red ball in a clear bag, along with a card that describes the product line. Nothing specific to what I actually bought (like the slick item-specific packaging on Amazon. To find that, I had to read the condensed description on the Amazon specific bar code that is right on top of a different barcode. This kind of thing displeases me. I want what grabbed my attention on amazon. No, this was not a return. This is how they come. I figured with item specific info on the packaging, the company is putting some money into packaging that makes you feel like you bought something specific. Pictured one says all natural beef. The chicken one says chicken. Pictured one says the size. Heck, I’d of been happy to at least have the ball attached to a card that at least says it’s a squeaky ball. Nope. Cost cutting is not ok when you are selling a beef flavored, medium size squeaky ball for $14.99. What arrives is an advertisement for the whole line, nothing that says what it is, the flavor, the size (unless you try to make out the Amazon bar code desc). Just a ball in a bag with an advertisement to buy other stuff they make. Maybe you received what’s pictured. I texted my buddy and asked him what he received. The exact same thing I did. In my opinion, when one cuts corners on packaging, I have no doubt corners could have been cut with the product itself. The squeak isn’t as easy as kong ball squeaker. Takes effort. So if your dog likes to play by walking/running around while constantly biting and getting that pleasing squeak each time, that didn’t happen here. Yes, I know the tennis ball type squeakers are different. But this says it’s a squeaker ball. Not just a squeaker ball, but a flavored squeaker ball. Mine smelled like rubber. Where’s the beef? I threw it a few times. My dog chased it a bit, did her usual “what’s this” evaluation, bit into it a few times with her very strong jaws, only to have no squeak. God as my witness, she dropped it, looked at me with what I insist is a look of disappointment, and walked away. She then went to the big bin of a huge variety of squeaky balls and grabbed one. She then went upstairs, with a squeak every second or so as she went up. I went and picked this one up with slobber and all. To get this to squeak requires opposing thumbs. So I suppose it could be marketed as a hand strengthener that squeaks. Friends lab had zero interest as well. So, I’m gong to actually return a dog toy. This was a disappointment. If it had come carded the way it shows on Amazon, I would not be as frustrated. I won’t take a chance when corners are cut when it comes to my dog. Update the picture to what I received is my advice to the company. I have a feeling what I got wouldn’t sell as easily. Topping it off, I noticed something odd. It doesn’t squeak when squeezing it, only when it is released to go back to its regular shape. So it’s a reverse reward. Weird. All the squeaker balls we have make a noise both when squeezing and releasing. Sorry Olina (my pooch).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2023
D
Verified Purchase
Dana H
New York, US
★★★★★ 5
Best Toy EVER!
Size: Jumbo, Style: Peanut Butter
I was a bit skeptical. We have had NO joy in finding toys for "aggressive" chewers that actually last more than a day for our 1 year old Staffordshire/Pittie mix. He has jaws of iron! (or so it seems) Nothing holds up. He is literally eating them, and subsequently gets them taken away, within 24 to 48 h ours. IF that long. He finds it a challenge to get to the center of whatever toy he has, whether it is supposed to have a center or not! We bought this in April of last year!! Yes, the squeaker is no longer squeaking (a blessing in disguise) but the ball itself is still intact, with no nicks, dings, pieces missing, etc. It still bounces well, and he still loves it. 1 year later, still going strong! I didn't realize it had been that long, until today. So I had to write a review, and buy a couple more Playology Jumbo toys. I hope they hold up 1 tenth as well!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 20, 2025
E
Verified Purchase
E. Masters
Omaha, US
★★★★★ 3
Hit or miss
Size: Medium, Style: Beef, Size: Medium, Style: Beef
I’ve purchased this item multiple times. Twice now, I got duds. Within minutes of opening the package, the ball was destroyed. The other times, it lasted months! I don’t know how to explain it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
L
Verified Purchase
lckhrt
Grantham, US
★★★★★ 5
Still squeaking after all these days!
Size: Jumbo, Style: Beef
My power chewer GSPs usually wreck all "tough" toys in less than an hour, especially if they squeak. These seem pricey but I can say it's held up really well. After about three weeks, it's still hanging in there! The stripes are worn off but the squeaker still squeaks and that's what it's all about.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
J
Verified Purchase
joebob
Houston, US
★★★★★ 5
Long lasting scent and has not been destroyed by my heavy chewer.
Size: Jumbo, Style: Bacon
My medium puppy loves this ball. She already has the smaller size but appears to enjoy the challenge of catching the large one. An added benefit is it's easier for me to win it back when we fight (play fighting) for it. The scent really lasts. I've had the smaller version for a few months and the scent is still there. Does it really smell like bacon? Not to my nose but the puppy thinks it's awesome. The ball itself is really tough. The pup can destroy a tennis ball in a day. Except for a few teeth marks these balls are holding together great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026

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