Most people are aware the late 2012's and the 2013 GT's have a different piston (and no oil squirters)
But it looks like the Boss had a piston change too.
Go to this link and search for pistons:
Buy 2012 Ford Mustang Parts | FordParts.com
But it looks like the Boss had a piston change too.
Go to this link and search for pistons:
Buy 2012 Ford Mustang Parts | FordParts.com
But wait, there's more. The Boss got a piston revision for late 2012s (and presumably 2013 as well):The old piston:
Engine Piston
MOD 5.0L-4V Dual Over Head Cam SEFI NA ; Standard, Refer To Workshop Manual For Proper Grade Selection, Piston Only; Wrist Pin And Retainers Must Be Purchased Separately
$36.16 Select a dealer for prices & availability
Vehicle Build Date before: 12/7/2011
The new piston:
Engine Piston
MOD 5.0L-4V Dual Over Head Cam SEFI NA ; Standard, Refer To Workshop Manual For Proper Grade Selection, Piston Only; Wrist Pin And Retainers Must Be Purchased Separately
$36.72 Select a dealer for prices & availability
Vehicle Build Date after: 12/8/2011
I hope to ****ing god it's just the old forged Boss piston plus this new coating and that Ford didn't cheap out and try to get away with a coated hypereutectic on the new Bosses.Engine Piston
5.0L V8 32V Dual Over Head Cam EFI Modular ; Standard, Refer To Workshop Manual For Proper Grade Selection, Piston Only; Wrist Pin And Retainers Must Be Purchased Separately
$83.66 Select a dealer for prices & availability
Vehicle Build Date before: 12/11/2011
Engine Piston
5.0L V8 32V Dual Over Head Cam EFI Modular ; Standard, Refer To Workshop Manual For Proper Grade Selection, Piston Only; Wrist Pin And Retainers Must Be Purchased Separately
Call Select a dealer for prices & availability
Vehicle Build Date after: 12/12/2011