SKU: 27862280038

ACL Race Series Bearings BMW S65B40 M3 E90, E92, E93, MAIN BEARING - STD, .025, .25, .50 5M1581H (Back Order)

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Description

ACL Race Series Bearings BMW S65B40 M3 E90, E92, E93, MAIN BEARING - STD, .025, .25, .50 5M1581H (Back Order)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,

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.

  • 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: 27862280038

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4.7 ★★★★★
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M
Mari Carmen
Houston, US
★★★★★ 3
Better options for the price
Color: Black Watch-G5010, Color: Black Watch-G5010
While having a striking appearance, the band has many rough edges and pulls your arm hairs. It is a good size and looks good at the surface level, but it is very light almost to the point that it feels cheap or not durable. This makes the price feel unnecessary, especially when compared to other more substantial or quality feeling options at this price point and below. If you just need a watch, it’ll do but I felt that it fell short in places, especially the band.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2025
I
Verified Purchase
Isaac
Dallas, US
★★★★★ 5
Beautiful Watch, and easy to set up.
Color: 5535-ZP-blue
Looks classy, very easy to set the time, day of the week, and date. It is a class cover so it can break if dropped (my kids broke my first one), but it's inexpensive so it wasn't a huge deal. It's easy to read. Battery hasn't died for months. It's easy to put on and the size works for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
S
Verified Purchase
Stephen W. Elliott
Massapequa, US
★★★★★ 5
Runs like a Rolex
Color: 5535-ZP-blue
What a watch!! A very nice watch. Everyone asks if it is a Rolex!! I say NO but it keeps me on time like a Timex. The band is wearing a little quickly but otherwise thumbs up!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2025
H
Verified Purchase
Hyperion Grey Solomon
Whiting, US
★★★★★ 1
Most important review for this watch and company.
Color: 5566-ZP-blue face, Color: 5566-ZP-blue face
I bought two and they both broke. Customer service has ignored my e-mail. What more do you need to know about a company? I personally wrote them through their own website, so they could keep Amazon out of it. It makes me angry that they won't even reply to my e-mail. I was nice. Both watches broke, neither one if actually water proof. The band is exceptionally thin and it WILL break on you once it arrives. It's so poor, that my body moisture is what got into the face of the watch. What the heck? I've had better 9 dollar watches from Walmart. Zero out of zero for the COMPANY who doesn't care about their customers, and zero out of ten for watch quality. Useless. I wasted 60-80 bucks on two of these! BOTH BROKE! and in more than one way!!!!! Terribly marked up (this is less than a 10 dollar Walmart watch - quality is LOWER than the lowest 3 dollar watches off Temu, Shien, Walmart), customer service is non-existent, and the band WILL BREAK on you. It's worthless. Take your money somewhere else. Attached pictures show the moisture leak from my sweat, but in real life, it's actually much worse. Worthless, not usable. Two of them folks. TWO!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
S
Verified Purchase
sheila
New York, US
★★★★★ 5
Quality Watch
Color: 5566-ZP-white face
A very nice looking inexpensive watch for work if you are in a job that you don't want to wear an expensive watch.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026

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