If you are replacing your leaking upper oil pan gasket on your 3.8L don't reuse your old bolts and run the risk of snapping one of them off in the block. This is a complete upper oil pan bolt set for 2007-2011 Wrangler JK and Unlimited JKU with the 3.8L engine. (16) 10.9 Class (metric equivalent to Grade 8) hardened yellow zinc plated flange bolts and (2) flange lock nuts. All the hardware is 10.9 Class hardened, even the nuts. High quality direct OEM replacement and peace of mind that an hour job won't turn into an all day ordeal.