Description

Genuine OEM GM LS2 90mm Electronic Throttle Body featuring the highly sought-after Silver Blade design. This discontinued unit is the correct throttle body for C5 Corvette FAST 92/102 intake manifold swaps and LS2 conversion projects, as it uses the proper blade rotation for the C5 TAC (Throttle Actuator Control) system. Unlike the later Gold Blade throttle bodies, which open in the opposite direction and can cause Reduced Engine Power warnings and TAC module faults on C5 applications, this Silver Blade version is 100% plug-and-play with C5 electronics and is becoming increasingly difficult to find in good condition. The throttle body is in excellent used condition with a clean bore, complete electronic assembly, and zero shaft play. It is ready to install and works perfectly for factory replacements, FAST intake upgrades, or LS2 swaps. Condition: Used – excellent condition. OEM Part Number: GM 12570790. Specifications: 90mm bore, original silver aluminum blade, correct rotation for C5 TAC modules, complete electronic drive-by-wire assembly. Compatible Replacement Part Numbers: GM 12570790 (Silver Blade – correct C5 rotation), GM 12580760 (Gold Blade – reverse rotation), Nick Williams 90mm Throttle Body, FAST 90mm Throttle Body. Fits: 1997–2004 Chevrolet Corvette C5 (LS1/LS6) with FAST 92mm/102mm intake manifold swaps, 2005–2008 Chevrolet Corvette C6 LS2, 2004–2007 Cadillac CTS-V (1st Gen), and 2004–2006 Pontiac GTO (LS2). Please verify compatibility with your TAC module, intake manifold, and engine combination before purchasing.