What is ARP 18A material?

ARP 18A is a proprietary alloy developed by ARP. It provides higher tensile strength compared to standard Grade 8 bolts, making it suitable for demanding engine applications where increased clamping force and durability are needed.

Why are head bolts important for engine builds?

Head bolts are critical for securing the cylinder heads to the engine block and maintaining a proper seal for the head gasket. Using a quality head bolt kit ensures consistent clamping force, which helps prevent leaks and maintain engine compression, especially under higher pressures.

Does this kit include everything needed for installation?

This kit includes the necessary head bolts for Small Block Chevy engines with high port heads. It is recommended to consult the manufacturer's installation instructions for any additional hardware or preparation steps required.

ARP SB Chevy Head Bolt Kit 134-3608

Name: ARP SB Chevy 18A high port head bolt kit
Brand: ARP
SKU: arp-arp-sb-chevy-18a-high-port-head-bolt-kit-t14-853854
Price: 126.30 USD
Availability: BackOrder

ARP SB Chevy 18A high port head bolt kit

$126.30

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ARP SB Chevy 18A high port head bolt kit.

Key Features

Fits Small Block Chevy engines with high port heads.
ARP 18A material offers increased tensile strength.
Designed for consistent clamping force to seal head gaskets.
Includes all necessary bolts for the application.
Fits factory bolt locations on high port cylinder heads.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

ARP is well-known for making strong fasteners, and this head bolt kit for Small Block Chevy engines with high port heads is no exception. If you're rebuilding the top end of your engine, especially if you're aiming for improved performance or durability, using a quality head bolt kit like this one is a smart move. These bolts are designed to provide a more consistent clamping force than stock bolts, which is crucial for keeping your head gaskets sealed under pressure.

This kit uses ARP's 18A material, which is a proprietary alloy that offers increased tensile strength over standard Grade 8 bolts. This means they can handle higher cylinder pressures and temperatures without stretching or failing. The kit includes all the necessary bolts for your engine, and they are designed to fit right into the factory bolt locations on high port cylinder heads. Using a torque-to-yield bolt like these ensures that the cylinder heads are properly seated and sealed against the block, which is essential for preventing leaks and maintaining compression.