ARLEN NESS Precision Engine Components are CNC‑machined from forged billet aluminum, ensuring a high‑strength, lightweight construction that meets the exacting tolerances required for engine performance parts. The precision machining process delivers consistent dimensional accuracy across each pair, providing reliable fitment and durability.
Designed to replace OEM top rocker box covers, these components come complete with the necessary gaskets and hardware for a straightforward installation. Sold in pairs, they offer a simple, factory‑grade upgrade that dramatically alters the engine’s appearance while maintaining full compatibility with existing mounting points.