ARP Head Stud Kit (EVO X) OEM Exhaust Manifold Stud Kit-7 Bolt Head-Flange Style Nuts OEM 8MM Exhaust Manifold Nut (Locking Style) $ 1.06 Description OEM Exhaust Manifold Nut: 8MM. 6 Bolt Head uses 9 8MM Studs. 7 Bolt Head (even 1G 7 Bolt Head) uses 7 8MM Studs Category: Add to cart Opens in a new window Tweet This Product Opens in a new window Share on Facebook Opens in a new window Pin This Product Opens in a new window Mail This Product Related products Quick View Quick View ARP Rod Bolt Kit (Evo X)$ 93.92Select OPTIONS This product has multiple variants. The options may be chosen on the product page Quick View Quick View OEM Exhaust Manifold Stud Kit-6 Bolt Head-Locking Style Nuts$ 56.57Add to CART Quick View Quick View , BabyOEM Rear Case to Block PinAdd to CART