ARP Acura B18A1 Short Stud 1.5 – Precision Replacement for High-Stress Builds

The ARP Acura B18A1 Short Stud 1.5 is a precision-engineered replacement stud for builders who refuse to compromise on clamping force, reliability, or serviceability on their B18A1 engine. Instead of buying an entire kit to replace a single damaged or missing fastener, this short stud lets you restore your ARP-equipped bottom end or top end with the exact hardware style and quality your setup was designed around.

Manufactured from premium 8740 chrome-moly steel and heat-treated for exceptional strength, this ARP short stud is built for the kind of abuse a stock fastener was never intended to handle—high RPM, boost, nitrous, and extended track use. The 1.5-length threaded section is designed to deliver proper thread engagement in the block while maintaining the correct nut engagement above the deck or cap, helping you hit target torque values with confidence.

• Engineered for the B18A1 layout: Sized and configured for Acura B18A1 engines, this short stud works seamlessly with existing ARP hardware and factory geometry, maintaining proper stack height and gasket crush.
• 8740 chrome-moly construction: The same material and manufacturing standards used in ARP’s full Pro Series kits mean outstanding tensile strength and fatigue resistance for demanding street and race engines.
• Rolled threads after heat-treatment: Threads are rolled after heat-treating to maximize fatigue life and thread integrity, reducing the risk of stretching or failure over repeated torque cycles.
• Consistent, repeatable torque: When paired with ARP’s recommended assembly lube, the stud delivers predictable clamping force so you can trust your torque specs during assembly and future teardowns.
• Cost-effective repair solution: Ideal for engine builders and DIY enthusiasts who have lost, damaged, or over-torqued a single stud and want an exact-match replacement without purchasing a complete kit.

This ARP Acura B18A1 Short Stud 1.5 is especially valuable for:

• Freshening up a previously built B18A1 where one or two studs have seen abuse or corrosion
• Race engines that undergo frequent disassembly and inspection, where individual stud replacement is inevitable over time
• Builders standardizing on ARP hardware across multiple B-series engines and needing spare short studs on the shelf

By choosing an individual ARP short stud that matches your B18A1 hardware, you maintain the integrity of your clamping system, avoid mixing fastener types, and keep your torque readings—and your tune—consistent. Whether you’re assembling a boosted street car or a dedicated track Integra, this ARP Acura B18A1 Short Stud 1.5 gives you the strength, precision, and peace of mind serious engine work demands.