Copper Exhaust Header Gaskets & 1.18" Extended Bolts Kit, Compatible with Small Block Chevy SBC 283 305 327 350 400 V8, Reusable Seal - Square Port

Upgrade Your Engine's Performance with the Cikroci Solid Copper Exhaust Kit High-performance engines generate intense exhaust heat that easily destroys traditional paper and composite seals. The Cikroci Solid Copper Exhaust Header Gaskets are the ultimate solution for racers and hot rodders who demand a permanent, blowout-proof seal. The natural pliability of solid copper allows it to conform perfectly to micro-imperfections on your header flanges. Honest Specs for Professional Builders Our kit includes 1.18" (30mm) thread length bolts. This extended length is purposely chosen to safely secure modern, heavy-duty aftermarket headers with thick flanges (up to 1/2"). Please measure your flange thickness and check for blind holes (especially on classic factory iron heads) before installation to ensure perfect fitment. Package Includes: 2 x Copper Exhaust Header Gaskets (Square Port) 12 x 3/8"-16 Socket Head Bolts (1.18" Thread Length) 12 x Flat Washers Stop wasting time replacing cheap gaskets. Invest in Cikroci for reliable, reusable performance!

• COMPATIBLE WITH SBC ENGINES: Designed as a premium aftermarket replacement, perfectly fits Small Block Chevy (SBC) V8 engines (265, 283, 302, 305, 327, 350, 400 cu in). The standard square port design ensures a precise match for your exhaust headers
• HEAVY-DUTY COPPER: Don't settle for flimsy, multi-layer gaskets that bend easily and fail after one use. Cikroci gaskets are precision-cut from thick, solid copper. They will not blow out, shrink, or deteriorate, providing a permanent seal even on slightly warped or pitted flanges
• PRECISION 1.18" EXTENDED BOLTS: Our premium socket head cap screws feature a 1.18" (30mm) Under Head Length (Thread Length) and a 1.50" (38mm) Overall Length. This extended design is optimized to provide maximum thread engagement for modern aftermarket headers with thicker flanges (up to 1/2" thick)
• HARDWARE CLEARANCE ADVISORY: The kit includes 12 flat washers to prevent interference with tight header tubes. Important Note: If you are running older factory iron heads with blind threaded holes (common on some 327 blocks) paired with very thin-flange headers, these extended bolts may bottom out; shorter bolts or extra washers may be required
• COMPLETE INSTALLATION KIT: Reusable and cost-effective. The package comes ready for a hassle-free upgrade. Includes 2 x Copper Exhaust Gaskets (Square Port), 12 x 3/8"-16 Premium Allen Bolts, and 12 x Washers. Provides maximum clamping force and a custom look for your engine bay