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ACL Bearings 4B1912H-.25 Race Series Performance Connecting Rod Bearings

Part of: ACL Bearings Race Series Performance Connecting Rod

Other options in this family: ACL Bearings 6B2640H-.25 ACL Bearings 8B663H-001 ACL Bearings 6B2390H-.50 ACL Bearings 8B527HXD-STD ACL Bearings 4B8366H-.25

Manufacturer

Picture for manufacturer ACL Bearings

Part Number

4B1912H-.25
7 reviews
Sale Price

$66.76

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Product Details

The ACL Bearings 4B1912H-.25 Race Series connecting rod bearings are engineered for high-performance and racing applications where durability and precision are critical. These bearings feature ACL's Race Series construction, designed to withstand the extreme loads and temperatures encountered in motorsports and high-output engines.

Key Features:

  • Race Series construction for maximum strength and reliability
  • 0.25mm undersize for crankshaft journal machining and rebuilds
  • Tri-metal composition with hardened steel backing for superior fatigue resistance
  • Precision bore geometry ensures optimal oil clearance and film strength
  • Advanced bearing material formulation prevents scoring and seizure under high loads
  • Designed for demanding racing and high-performance street applications

ACL Race Series bearings are trusted by professional engine builders and racers worldwide for their consistent quality and performance. The undersize designation allows for proper fitting on machined crankshafts, making these bearings ideal for race engine rebuilds and high-performance engine builds requiring precision bearing clearances.

Products specifications

Max Overall Length

0.764"(19.40mm)

Max Std Shaft Size

1.8898"(48.000mm)

Max Std Tunnel Size

2.0088"(51.024mm)

Max Wall at Crown

0.0589"(1.496mm)

Min Std Shaft Size

1.8890"(47.980mm)

Min Std Tunnel Size

2.008"(51.004mm)

Oil Clearance

Standard

Size

.25

Website is very easy to work with and well organized.

User friendly website easy to use and has lots of parts

Easy to find part - quick checkout

They had the part and it was quick and easy checkout

An easy to navigate website, great prices and efficient company. I will definitely check Autoplicity first for all of my automotive needs. From purchase to arrival I was well informed as to the status of my order.

Not only was it the cheapest price, but they had the fastest and lowest price shipping, and best customer service. Thanks Autoplicity!

Good products at a good price!<br>Never bought from them before, so I used Google Checkout, I always get nervous about buying from a new online store, but they came through just fine.<br>Shipping was a little expensive for the product I purchased and the shipping time, but was still cheaper than most anywhere else.<br>$12 to ship an automotive gauge [>2 lbs] and it was a 5 day ship.<br>Otherwise, a very good experience, B+ to A- just because of shipping cost/time.

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