This latest version of the Screamin' Eagle High-Capacity Tappet incorporates a special heat treatment on the bearing needles and axle. In addition to the already proven, 25% larger, high capacity needle bearings, this new heat treat technology increases material hardness and compressive strength, ultimately enabling the tappet to withstand the grueling engine speeds and high valve lift found in many performance engine configurations.
The newest technology is identified with a laser-etched SE on the axle of the tappet (shown in product image).
Special heat treatment on needle bearing and bearing axle Large, high-capacity needles; 25% larger than Original Equipment Superior tappet life in high-performance applications
Set of 4
Fits 1999-2017 Twin Cam-equipped models, 2000 and later XL and XR models, and 2017 and later Milwaukee-Eight equipped models.