The factory head bolts can begin to stretch with higher cylinder pressures and cause a enough space between the block and head for combustion to leak out. Not only are you losing power, you are putting your cooling system and head gasket at risk.
Replacing the stock head bolts with ARP head studs creates a super-strong
connection between the head and the block and will ensure a positive seal of the
head gasket.
Using ARP studs not only makes a much more solid connection, they
facilitate easier R&R of the head and can be torqued more accurately.
Includes: a set of 10 ARP2000 head studs, ten parallel ground
washers, ten 8740 chrome moly steel 12pt nuts and a 1/2oz of. pack of
ARP ultra-torque fastener assembly lubricant.
TECH TIP: Head studs should NOT be installed one at a time with
the head on the car. You risk not only warping the cylinder head, but any
oil or coolant that finds its way between the head gasket can ruin the tight
seal that you are attempting to make. Pull the entire head and do it righ the
first time!
Fits Mitsubishi Lancer Evolution X