Granatelli Motorsports Pro-Series Extreme Coil Pack 28-0513-1B

- Fits 2005 - 2013 GM Cars

- Works with LS2, LS3, LS7, LS9, LSA, L92, L99, and L76's

- Direct OEM replacement with a simple plug and play, won't void your factory warranty

- Improves fuel economy, throttle response, and idle characteristics. 

- Increased engine efficiency with improved engine combustion

- Gains of up to 12hp have been seen with these coils over stock.  Average gain with no other changes is 6 to 8hp on an otherwise stock vehicle.  Gains of up to 18hp have been experienced on heavily modified forced induction applications. 

- Rated at 80K Volts, Pro-Series Extreme coil packs offer nearly twice the voltage over the competition.