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Introducing the ACL Race Series High-Performance Main Bearing Set, meticulously crafted for BMW enthusiasts running M20, M50, M52, M54, S50, S52, and S54 engines. Take your BMW’s engine durability and performance to the next level with these race-proven main bearings, designed to handle the demands of aggressive driving and high-RPM scenarios.
Built with ACL’s Duraglide tri-metal technology, this main bearing set ensures exceptional oil flow and resistance to wear, even in extreme conditions. Engineered for performance, this upgrade is a direct replacement for stock BMW main bearings, providing enhanced strength and longevity without compromising factory tolerances.
Key Features:
Race-proven design: Ideal for performance builds, this complete set delivers superior oiling and heat resistance, making it perfect for high-RPM use. Precision fitment: Engineered specifically for BMW’s M and S series engines, offering a reliable solution for common crankshaft bearing wear issues. Duraglide technology: Featuring tri-metal construction, including a copper-lead base and high-strength overlay, for improved oil retention and reduced friction. High-load capacity: Designed to withstand the rigors of spirited driving and competition, preventing distortion and wear during peak performance. Optimized for high performance: Eliminates tin flash plating, allowing for better bearing-to-housing contact and improved durability under extreme pressure. Whether you're rebuilding your BMW for the track or simply want to ensure reliable performance under demanding conditions, the ACL Race Series Main Bearing Set offers the perfect upgrade solution. Boost your engine’s reliability and extend its lifespan with this high-performance bearing set.
This product was last offered at the strikethrough price on
11-04-2026
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This product was last offered at the strikethrough price on
06-18-2026
This top-end gasket set covers the cylinder head on the S54 engine used in the E46 M3, Z3 M Roadster/M Coupe, and E85/E86 Z4 M Roadster, M Coupe. If you're pulling the head, intake manifold, or doing any other upper end engine work this set can be a time and money saver. This set includes all of the commonly replaced gaskets, seals, and o-rings when overhauling the head. It's also a useful kit to have and dip into any time you're doing upper end engine work. Not having a critical seal or gasket on hand can ruin your work and this gasket set can prevent that from happening. This Victor Reinz set includes the head gasket.
BMW #QtyDescription
071199035461left timing rail upper bolt seal
071199630724VAN0S oil line seal ring
071199631292crankcase vent banjo bolt seals
071199632522screw plug seal ring
071199633421right upper timing rail bolt seal ring
071199634181timing chain tensioner seal ring
111214373952valve cover stud grommet seal
1112783097213valve cover stud grommet seal
111278312716spark plug hole profile gasket
111278320341main valve cover gasket
111278370241oil fill cap seal ring
111278370251crankcaske oil separator seal ring
111417367581VAN0S-camshaft plate o-ring
111578309661crankcase oil separator o-ring, large
111578321191crankcase oil separator plug o-ring
113113173181inside o-ring for internal VAN0S regulating valve
113490644572valve stem seal, 2 sets = 24 valves
113678319381VAN0S unit profile gasket
114113060821outside o-ring for internal VAN0S regulating valve
115313184021thermostat-to-water pump o-ring
115378307083coolant pipe o-ring gasket
115378307092thermostat housing connector o-ring
116114076951intake bellows o-ring profile gasket
116178301041intake bellows-to-airbox gasket
116278306676exhaust manifold port gasket
117275052591air pump valve profile gasket
121417483982camshaft position sensor o-ring
135478314836throttle body o-ring
136414374746fuel injector o-ring, upper
136478306116fuel injector o-ring, lower
111278359181head gasket
This item fits the following BMWs:
2001-2006 E46 BMW M3
2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe
2006-2008 E85 BMW Z4 M Roadster Z4 M Coupe
This set of top-end gaskets is a both a time and money saver. It includes all of the commonly replaced gaskets, seals, and o-rings when pulling the cylinder head for overhaul. Having these on hand instead of chasing them down at the last minute will save you time, money, and frustration. With the head off the car you're going to want or need to replace these items anyway to ensure it's free of fluid and vacuum leaks. This is especially important because the newer BMW models have very strict emissions controls and vacuum and oil leaks can create turmoil in the system. Even if you're not pulling the head this set includes so many valuable parts you'll want to keep this on hand to use for spares.
This item fits the following BMWs:
2003-2006 E46 BMW 325i 325ci 325xi 330i 330ci 330xi
9/2002-on E39 BMW 525i 530i
2004-2005 E60 BMW 525i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i
2003-2006 E53 BMW X5 3.0i
9/2002-on Z3 BMW Z3 2.5i Z3 3.0i
2003-2006 E85 BMW Z4 2.5i Z4 3.0i
This product was last offered at the strikethrough price on
08-26-2026