The ACL 4B1972HXC-STD is a standard-size, CT-1 coated High Performance connecting rod bearing set for the Acura/Honda K20A2 and K24A engines, built with extra oil clearance for higher-output applications. "Standard Size" means it's sized for a stock, unmachined crankshaft journal, and the CT-1 coating adds a low-friction running surface. This engine family covers the Acura RDX, RSX Type-S, TSX, and Honda Accord, CR-V, and Element.
Specifications:
- Type: Rod Bearing Set
- Series: High Performance, CT-1 Coated (Extra Oil Clearance)
- Size: Standard
- Engine Fitment: Acura/Honda K20A2/K24A (RDX, RSX, TSX, Accord, CR-V, Element)
- Part Number: 4B1972HXC-STD
FAQ
What's the difference between this and the HC-STD version?
This HXC version adds ACL's extra oil clearance spec on top of the CT-1 coating, for engines needing more running clearance at higher output.
What size crank journal does this fit?
Standard size - built for a stock, unmachined K20A2/K24A crankshaft journal.
What vehicles use this engine?
The Acura RDX, RSX Type-S, TSX, and Honda Accord, CR-V, and Element all used these engines depending on year and trim.

