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Honda Genuine RDX-Spec Hi-Boost Crank Pulley, use on Supercharged K-Series Engines

Part Number:
Product Line:
Genuine OEM Crankshaft Pulley
Vehicle Fitment:
Honda I-4, K-Series
Honda Genuine RDX-Spec Hi-Boost Crank Pulley, use on Supercharged K-Series Engines



18% below retail


Superchargers are belt-driven power-adders. They faster they spin, the more boost is made. Increase the output of your supercharged K-series engine by installing this RDX-Spec crank pulley. It is larger that the typical K20-K24 crank pulley and increases the belt speed, turning the supercharger faster, and giving you more power!

Customer Questions


I'm not clear on one of the topic, but isn't OEM a genuine factory part? So is this part made from Honda/Acura factory OEM?


Yes OEM and Geniune are used interchangeably a lot of times. This is a GENUINE part, meaning it comes straight from Acura. Read more on this topic here: What is the difference between OE, Genuine, OEM, and OER/Aftermarket Parts?

Q:How do high mileage, 145k+, motors handle being boosted? I saw an earlier question where you stated it comes down to user. How well can high mileage motors handle boost?

If the engine is in good condition and properly maintained the mileage on the engine is not a significant factor in reliability. They handle boost the same as new ones do. Again, this is assuming proper maintenance and care has been taken over time. Therefore, it is a user-based concern. Not a mileage based concern.

Q:Is this pulley is smaller and lighter weight than the stock pulley on the 2013 tsx ?
A:No, this pulley is larger then the OEM pulley. It is meant to raise boost on supercharged engines.
Q:What is the diameter of this pulley?
A:This pulley should be 6.37" in diameter.

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