Why Upgrade to ARP Header Bolts?
Because chasing exhaust leaks is not a personality trait.
Stock bolts lose clamping force after repeated heat cycles. ARP fixes that with better materials, tighter tolerances, and consistent torque retention.
Key Features
- High-Strength Alloy Steel Construction
Designed to withstand high heat and vibration without stretching or loosening. - 3/8″ Thread Size with .850″ UHL
Ideal for thicker header flanges and aftermarket exhaust setups. - 6-Point Hex Head Design
Easy installation with standard tools and solid grip. - Precision Rolled Threads
Ensures smooth installation and accurate torque application. - 16-Piece Kit
Perfect for most V8 header applications.
ARP’s product line comprises thousands of Phase numbers, and has expanded to incorporate nearly each and every fastener found in an engine and driveline. These vary from quality top performance OEM replacement portions to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.
Ideal Applications
- Exhaust header installation and upgrades
- Small block, LS, and other V8 engine setups
- Street, track, and boosted builds
- Replacement for worn or failing header hardware
If your headers won’t stay tight, this is your solution.
Why It Matters
Cheap header bolts often lead to:
- Exhaust leaks from loosening hardware
- Corrosion and seized bolts
- Stripped heads or broken fasteners
The ARP 100-1117 kit delivers stronger clamping force and long-term durability, keeping your exhaust sealed and your engine running properly.
Product Kind :Auto Phase
Package Dimensions :8.0 ” L X5.0 ” W X0.2 ” H
Country Of Origin :United States
Package Weight :zero.69Lbs
Installation Notes
- Torque evenly across all bolts
- Re-check torque after initial heat cycles
- Use anti-seize if needed for high-heat applications
Translation: install once, do it right, and stop thinking about it.
Final Verdict
The ARP 100-1117 Header Bolt Kit is a simple but critical upgrade. Stronger, more reliable, and far less annoying than stock hardware.
Because your headers should stay tight—not test your patience.
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