ARP Chevrolet Small Block LS 12pt Head Bolt Kit (Fits LS, 2004 & later except LS9) fits_1970-1973`Nissan`240Z`Base~1974-1975`Nissan`260Z`2+2~1974-1975`Nissan`260Z`Base~1975-1978`Nissan`280Z`2+2~1975-1978`Nissan`280Z`Base 4-Ply Aramid Reinforcement: Delivers strength

4-Ply Aramid Reinforcement: Delivers strength for pressures over 120 PSI and temperatures from -65°F to 350°F continuous for long-lasting durability in boosted setups

Handcrafted in the USA: Every piece is meticulously crafted with precision

It fits compatible Audi A3

Holds four patents as the first company with tuned air intake systems

ARP Chevrolet Small Block LS 12pt Head Bolt Kit (Fits LS, 2004 & later except LS9) fits_1970-1973`Nissan`240Z`Base~1974-1975`Nissan`260Z`2+2~1974-1975`Nissan`260Z`Base~1975-1978`Nissan`280Z`2+2~1975-1978`Nissan`280Z`Base 4-Ply Aramid Reinforcement: Delivers strengthSKU: 234 3725 UPC: 672036049263 ARP Chevrolet Small Block LS 12pt Head Bolt Kit (Fits 2004+ LS Cathedral Port Heads except LS9) Secure your LS engine with ARP's 12 point head bolt kit designed for 2004 and later Chevrolet small block LS engines featuring cathedral port heads, excluding the LS9. This 32 piece kit replaces factory bolts with stronger components that maintain head gasket seal under high cylinder pressures from boost or nitrous. Ideal for