ACL Acura D16A1 / 97-01 Honda H22A4 / 98+ F23A Standard Size High Performance 55mm Main Bearing Set

ACL is an engine builders top choice for their quality and consistency. Buy with confidence; you will find ACL in many cars on road as they are an Original Equipment supplier. Many racers, especially import racers, swear by both their stock and performance series crankshaft rod and main bearings. ACL premium bearings will not only hold up better and longer than OEM, but the special coating process will also help prevent premature engine bearing failures and expensive engine damage.ACL Race series performance bearings are for extreme endurance under harsh conditions. Plan on running high RPMs and big boost? Fatigue, stress wear, and failure are factors you won't have to worry about when you are running ACL's top of the line metallurgy.ACL Duraglide series bearings are a tri-metal design that provide a combination of high strength and the ability to withstand harsh / demanding operating conditions above casual driving. This makes them ideal for performance engines and rebuilds.Please Note When Ordering Bearings: Engine bearings require proper tolerance to be measured before purchase. If you are not sure what size bearings your build requires, please consult a professional engine builder. We are not responsible for incorrectly ordered bearings and can not take returns or provide exchanges on any engine internal components.Notes:H: Standard oil clearanceHX: +0.001 in extra oil clearanceHD: Standard Oil Clearance + Dowel hole in lower halfHXD: +0.001 in extra oil clearance + Dowel hole in lower half ENGINE BEARING DIMENSIONS Minimum std shaft size 2.1646in / 54.980mm Maximum std shaft size 2.1654in / 55.000mm Minimum std tunnel size 2.3228in / 59.000mm Maximum std tunnel size 2.3236in / 59.020mm Maximum wall at crown 0.0790in / 2.007mm Maximum overall length 0.7874in / 20.00mm Engine Bore size x Stroke Engine code Make and model DOHC 16v 81mm / 3.189in x 89mm / 3.504in B18A Accord, Vigor SOHC 12v mm / 3.189in x 95mm / 3.740in B20A SOHC Prelude DOHC 16v 81mm / 3.189in x 95mm / 3.740in B20A, B21A DOHC Prelude, Accord, Vigor DOHC 16v 83mm / 3.268in x 95mm / 3.740in B21A1 Prelude SOHC/DOHC 16v mm / 2.96in x 90mm / 3.54in D16A, D16B Civic, Concerto, Integra, Rover SOHC 16v mm / 2.96in x 90mm / 3.54in D16W HR-V SOHC/DOHC 16v mm / 2.96in x 90mm / 3.54in D16Y, D16Z Civic, CRX SOHC 16v 75mm / 2.953in x 94.4mm / 3.717in D17A, D17Z Civic SOHC 16v mm / 3.39in x 97mm / 3.82in F23A, F23Z Accord, Odyssey DOHC 16v mm / 3.43in x 90.7mm / 3.57in H22A, H22Z Prelude, Accord DOHC 16v mm / 2.95in x 90mm / 3.54in ZC Civic, Integra SOHC 8v mm / 2.95in x 90mm / 3.54in ZC Civic