This billet LS throttle body opens up a 105mm bore with a low-rpm taper for street drivability, mounting to GM LS 4-bolt intake manifolds with cable actuation and built-in idle bleed and TPS clocker adjustments.

Holley 112-581 Highlights:

• Fits GM LS 4-bolt intake manifolds, 4.8-7.0L.
• 105mm throttle bore for high airflow.
• Low-rpm taper for street drivability.
• Billet aluminum with black anodized finish.
• Idle bleed adjustment and TPS clocker.
• Closable PCV passage valve for forced induction.