IAP AC109440 Chromoly Push Rod Set for Air-Cooled VW Engines

The IAP AC109440 is a heavy-duty chromoly push rod set designed for air-cooled Volkswagen engines. Manufactured from 4130 chromoly steel with 3/8-inch heavy wall tubing, these push rods offer superior strength and reliability compared to stock aluminum units while maintaining a lighter weight profile.

Key Features:

• Constructed from 4130 chromoly steel for maximum strength and durability
• 3/8-inch diameter heavy wall tubing construction
• Lighter than stock VW aluminum push rods yet significantly stronger
• Ideal for performance applications with high-lift camshafts and high-RPM valve springs
• Cut-to-fit design at approximately 11.60 inches for custom engine builds

Installation Note: When using chromoly push rods, valve lash must be set to zero (no gap) rather than the traditional .006-inch specification used with aluminum push rods. This is because chromoly steel does not expand under heat the way aluminum does. Tighten the valve adjustment screw until the rocker has no play and the pushrod still spins freely.

These chromoly push rods are essential valve train components for air-cooled VW performance builds, providing the strength needed for aggressive cam profiles and high-RPM operation in classic Beetles, Karmann Ghias, Type 2 Buses, Type 3s, dune buggies, sand rails, and other VW-based performance vehicles.