Sale

ARP K-Series

Pro Series Head Stud Kit

$159.95 $138.99 Save $20.96

SKU: 208-4301

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The ARP 208-4301 is a Pro Series head stud kit engineered to enhance the performance and reliability of specific Honda D-series engines. Constructed from premium 8740 chromoly alloy, these studs are cold-forged for superior molecular integrity and then precisely heat-treated to a tensile strength of 190,000 psi. This process, combined with thread rolling after heat treatment, results in significantly improved fatigue strength compared to standard bolts. The kit features 12-point nuts and includes hardened parallel washers to ensure even load distribution and accurate torque readings during installation. These studs are designed for applications including various Honda Civic, CRX, Del Sol, and Acura Integra models from the mid-1980s to the late 1990s, as well as certain Rover models. Specific fitments include the 1986-1989 Acura Integra, 1988-1991 Honda Civic Si and CRX Si, 1992-1995 Honda Del Sol Si, and numerous other European, Japanese, and Australian market variants. This kit provides a more robust clamping force for the cylinder head compared to stock fasteners, making it suitable for performance builds or high-stress applications. The studs have a black oxide finish for corrosion resistance. The kit contains 10 studs, ensuring all necessary fasteners are provided for the specified D-series engines.

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.

Fitment

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Specifications

BrandARP K-Series
Part Number208-4301
CategoryEngines and Components

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Returns & Fitment

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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