6061 Black Anodized
The pulley is sized to maintain proper alternator speed when used on Ls equipped Motors that want to exceed 6000 RPM's.
This pulley installs as a direct replacement for the factory alternator pulley and requires no modifications or special tools.
2.5” 6-Rib Denso/Delco Alternator Pulley
ALPER’s alternator pulleys are furnished with two spacer adapters, enabling it to fit either a .670” shaft Delco or a .590” shaft Denso alternator. Click here for installation instructions.
Pulley Features
All Alper Motorsports pulleys are CNC machined from billet to the highest of tolerances. Serpentine pulleys feature 20% more surface area for the belt to contact than most other manufactures. Each pulley is machined to SAE specifications, then hardcoated to C-70 Rockwell hardness.
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