13810-PNA-013 13810-RRA-A02 HONDA ACURA K24 K20 2.4L ENGINE CRANKSHAFT PULLEY

Introduction to Dynamic Balancing

The K-series i-VTEC engine derives its reputation from a turbine-smooth power delivery that carries effortlessly to the 7,000 RPM redline. That refinement collapses the moment the harmonic balancer introduces rotational imbalance into the crankshaft. This pulley is dynamically balanced to near-zero runout tolerances, ensuring the crankshaft nose rotates true even as the VTEC cam lobe switches and cylinder pressures spike. For the Accord daily driver, CR-V family hauler, or TSX enthusiast build, balance integrity at the crank snout defines the entire powertrain experience.

Manufacturing and Performance Standards

Designed for the broad K-series platform spanning 2002-2006 Honda Accord, CR-V, Element and Civic, plus 2002-2008 Acura TSX and RSX, all equipped with K24A 2.4L and K20A 2.0L DOHC i-VTEC engines. The 7PK single serpentine configuration consolidates all accessory loads onto one belt track, demanding consistent rib engagement and zero axial wobble across the full RPM range. External diameter 157mm, center bore 30mm, and compact height 43.5mm fit the tight transverse packaging of the K-series engine bay.

Advanced Material Standards

The pulley core is cast from precision-nodularized ductile iron, machined to exacting concentricity between the hub bore and outer rib track. The elastomeric damper uses a high-modulus synthetic compound formulated to resist the elevated heat soak generated by the K24 exhaust manifold routing in transverse applications. The vulcanized bond layer is verified through ultrasonic inspection to eliminate voids, ensuring the damping ring absorbs torsional vibration uniformly and prevents the harmonic distortion that can trigger false knock sensor readings and ECU timing pull in i-VTEC engines.

Inquiry and Technical Support

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