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Engines and Components› Cylinder Heads and Components

ARP

8740 Chromoly Head Stud Kit

Name: 8740 Chromoly Head Stud Kit
Brand: ARP
SKU: ACR-HON-L15HSK

$399.00 $329.31 Save $69.69

SKU: ACR-HON-L15HSK

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Description

The ARP Head Stud Kit is engineered to maintain robust head-to-block sealing in high-performance, low-displacement 4-cylinder engines. It is constructed from top-grade 8740 chromoly steel, heat-treated to achieve a tensile strength of 200,000 psi. ARP utilizes a centerless grinding process for unparalleled concentricity and thread rolls the studs post-heat treatment to significantly enhance fatigue strength by approximately 1000%. This kit includes ARP head studs and 12-point nuts for superior strength, along with custom-designed spacers to ensure accurate torque application. The benefits include a higher clamping force for maintaining seal integrity and enhanced resistance to head lifting in high-boost scenarios, contributing to engine durability and performance. This is a high-performance racing component, potentially usable in dual-purpose vehicles, but it is not intended as an OEM replacement. Applications for this kit include the 2016-2021 Honda Civic 1.5T and the 2017-2021 Honda Civic Si. The package contains 10 ARP Headstuds, 10 ARP Nuts, 10 MAPerformance L15B7 Headstud Spacers, and 1 ARP Assembly Lube.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

Brand	ARP
Part Number	ACR-HON-L15HSK
Category	Engines and Components

Videos

The Easy Way to Install ARP Head Studs

ARP Headstud install 10th Gen Civic - without removing the head.

10th Gen Civic SI Goes FBO/ARP Head Bolts Overnight !

Turbo Civic - Can $44 Head Studs Fix It - ARP Copy

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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