
Specifications
- Brand
- ACL
- Part #
- 8B1578H-.25
- UPC
- 9315726450543

ACL BMW N63/S63 V8 0.25 Oversized High Performance Rod Bearing Set
$233.11
ACL BMW N63/S63 V8 .25mm Oversized High Performance Rod Bearing Set. Direct fit for select BMW models.
Key Features
- Fits select BMW 550i GT, 550i, 650i, 750Li, M6, X5, and X6 models.
- Designed for BMW N63B44 4.4L 4395cc V8 engines.
- Set of connecting rod bearings, sized 0.25mm (0.010 inches) undersize.
- Helps reduce friction and wear between the connecting rod and crankshaft.
- Well-built for high-performance V8 applications.
- Ideal for engine rebuilds and performance builds.
Product Details
ACL BMW N63/S63 V8 .25mm Oversized High Performance Rod Bearing Set. This set of connecting rod bearings is designed for BMW N63B44 4.4L 4395cc V8 engines, specifically sized at 0.25mm (0.010 inches) undersize. These bearings are a crucial component for the health of your engine, helping to reduce friction and wear between the connecting rod and crankshaft.
ACL is known for making well-built engine components, and this rod bearing set is no exception. They are built to handle the demands of high-performance V8 engines like the N63 and S63. The .25mm undersize means these are intended for use when the crankshaft journals have been machined down to match this specific size, ensuring a precise fit and optimal oil clearance for reduced wear and improved performance. This is a popular choice for rebuilds or performance builds where engine longevity and reliability are top priorities.
This set fits a range of BMW models including the 550i GT (2013-2015), 550i (2014-2016), 650i (2013-2018), 750Li (2013-2015), M6 (2012-2018), X5 (2014-2018), and X6 (2011-2014). When installing these bearings, it's important to follow the manufacturer's recommended torque specifications and ensure proper lubrication to achieve the best results.
Specifications
- Brand
- ACL
- Manufacturer Part #
- 8B1578H-.25
- UPC
- 9315726450543
Frequently Asked Questions
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ACL BMW N63/S63 V8 0.25 Oversized High Performance Rod Bearing Set
