Holley EFI 112-581 Billet LS Throttle Body Cable Driven with Low RPM Taper - 105mm

The Holley EFI 112-581 is a premium billet aluminum throttle body designed specifically for LS engines requiring cable-driven throttle control. Featuring an oversized 105mm bore with an innovative low RPM taper design, this throttle body delivers improved airflow characteristics across the entire RPM range while maintaining excellent drivability at low speeds.

Key Features:

• 105mm Oversized Bore: Larger than standard LS throttle bodies for maximum airflow potential
• Low RPM Taper Design: Optimizes air velocity at low engine speeds for better throttle response and drivability
• Cable Driven Operation: Direct throttle cable actuation with integrated cruise control provision for OEM-style cruise control cable compatibility
• Premium Billet Construction: CNC-machined from high-quality aluminum billet for superior strength and precise tolerances
• Black Anodized Finish: Provides excellent corrosion resistance and a professional appearance
• Adjustable Idle Bleed: Allows precise idle adjustment without affecting throttle position sensor (TPS) voltage readings
• TPS Clocker: Enables TPS rotation to maintain proper ECU idle voltage range, essential for modified engines with aggressive camshafts
• PCV Passage Valve: Built-in valve closes for forced induction applications, eliminating the need to plug PCV ports

Compatibility: This throttle body fits Holley 105mm Hi-Ram intakes, FAST LSXR and LSXRT intakes, MSD Atomic AirForce intakes, and most other 102-105mm LS intake manifolds using 4-bolt throttle body mounting patterns.

Ideal for high-performance LS engine builds requiring maximum airflow while maintaining street drivability and OEM cruise control functionality.