Throttle Body Adapter Throttle Body Angled Adapter Throttle Body Angled Adapter; For Use w/GM Gen V LT Accessory Drive; Must Use Intake Manifold/PN[21-5]; SPECIFICATIONS: Finish: Black Material: Aluminum WARNING CA Proposition 65: No FEATURES: Maintains Proper Throttle Body Blade Orientation Eliminates Drivability Issue Associated w/Inverting Throttle Body Allows Clearance To Aftermarket Accessory Brackets No Harness Rerouting Or Extending Required Holley designed these throttle bodies with all relevant emission provisions and hook-ups for a true 50 state legal installation. They are engineered for a bolt-on installation on stock factory Manifolds for the applications cataloged. The one barrel throttle bodies have been assigned California Air Resources Board (C.A.R.B.) Executive Order (E.O.) number D-115-4. The two barrel throttle replacement bodies are considered to be the functional equivalent of the original equipment throttle body and, as such, are considered to be 50-State legal. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.