Holley 112-581 GM LS EFI Throttle Body 105mm with Tapered BoreGM LS EFI Thottle Body 105mm w Tapered Bore Upgrade your engine's performance with the Holley 112 581 GM LS EFI Throttle Body. Designed specifically for the GM LS Series, this throttle body features a 105mm tapered bore that enhances airflow, allowing your engine to breathe better and perform at its peak. Constructed from high quality aluminum and finished with a sleek black anodized coating, this throttle body not only looks great but also offers

Formulated to operate flawlessly under extreme conditions and with both gasoline and diesel

by popular demand

345 mm Dia

111 LSA (RPM Range 1200-6000)

This cam is not for the weak at heart

Average 30 HP gain between 5

Mahle -12cc inv

Intake Manifold - Atomic AirForce - Throttle Body Flange - Multi Port - Plastic - Black - GM GenV LT-Series - Each

mandrel bent 3

Includes chrome moly steel retainers and heat treated locks

(2) BTR LS1/LS2/LS3 Header Gasket - BTR17944

35-75psi (Works well with 11137 200lph up to 11101 A1000)