SKU: 22856629952

ACL Race Series Bearings BMW N55B30 2979cc Inline6 DOHC 4v Turbo CONROD BEARING - STD, .025, .25, .50 6B1584H

Sale price$175.05 Regular price$194.50
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Description

ACL Race Series Bearings BMW N55B30 2979cc Inline6 DOHC 4v Turbo CONROD BEARING - STD, .025, .25, .50 6B1584HABOUT 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 S65B40 3999cISc V8 DOHC 4v

Capacity: 3999 CC

Cylinders: 8

Bore Size: 3,622 in / 92 mm

Stroke: 2,9606 in / 75,2 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.
MAIN BEARING - STD, .025, .25, .50
  • High performance Tri metal 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, .025, .25, .50
    Oil Clearance
    Half Type Upper & lower
    Material F780
    Min. Std Shaft Size 59,971 mm / 2.3611 in
    Max. Std Shaft Size 59,99 mm / 2.3618 in
    Min. Std Tunnel Size 65 mm / 2.5591 in
    Max. Std Tunnel Size 65,019 mm / 2.5598 in
    Max Wall at Crown 2,5 mm / 0.0984 in
    Max Overall Length
    21,9 mm / 0.8622 in (1581H)
    27,95 mm / 1.1004 in (1582H(F))

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: 22856629952

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. Ray
Carnegie, US
★★★★★ 5
Beautiful shelves
Color: Rustic Brown + Black
Love these shelves
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Reviewed in the United States on May 10, 2026
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Geraldine Garrido
Phoenix, US
★★★★★ 5
Cut table
Easy clean and high quality
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Reviewed in the United States on May 25, 2026
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RomDeussen
Phoenix, US
★★★★★ 5
Good quality, if you keep them oiled last a long time
If you keep these oiled and do not soak them, these boards last a long time. Good variety of sizes, durable (I use the larger 2 daily), and again, if you keep them oiled, easy to wipe down and haven't shown a sign of splitting. Durable as well. Would buy again.
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Reviewed in the United States on January 19, 2026
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Oscar
Alexandria, US
★★★★★ 5
love them!
Great quality!
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Reviewed in the United States on May 12, 2026
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J
Port Orchard, US
★★★★★ 4
Better than thin plastic boards
I used to use one of those thin/bendable plastic cutting boards, thinking it's easier to transfer food into pots/pans from the board, but they tend to get bent in time and they're simply too thin and I hated the feeling of my knife pretty much hitting the kitchen counter. So, I decided to buy this set. I wanted to try a wooden board, but didn't want to spend too much in case I didn't like it, and this set had the perfect price tag and I liked the fact it came with 4 different sizes, so that I can see what size would actually be more useful. I've been using it for 2 months now they're doing great (except one of them started splitting a bit and started showing some strange black dots on the side... possibly mold??? though I can't think of any reason why mold would grow on just one of them. Maybe it's related to the fact that it's the only one that's cracking. And this is the only reason why I gave 4 stars instead of 5.) Anyway, apart from that one, the rest are doing well and having 3 boards is plenty. I like the juice groove to avoid spilling liquid on the board, as it happened so many time using the bendable plastic boards. I'm handwashing them with dish soap. They seem to dry pretty fast, and so far no stains etc. on the surface. They're not super duper thick so even the largest one is not too difficult to handle. I sometimes use them to serve some food like appetizers, snacks, pizzas and sandwiches, etc. too!
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Reviewed in the United States on February 12, 2023

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