Product images and videos 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.

Sale

Engines and Components› Cylinder Heads and Components

ARP

High Performance Head Bolt Kit

Name: High Performance Head Bolt Kit
Brand: ARP
SKU: ARP-134-3609

$219.99 $213.39 Save $6.60

SKU: ARP-134-3609

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The ARP head bolt kit is a High Performance series fastener kit. It is rated at 180,000 psi, making it 15 percent stronger than Grade 8 fasteners. This kit is available with a reduced wrenching hex head or a 12-point head.

The bolts are made of chromoly with a black oxide exterior finish.

Show original supplier description

The ARP High Performance series head bolt kit (134-3609) offers superior strength and reliability for Gen III/Gen IV LS engines. Rated at 180,000 psi, these bolts are 15% stronger than Grade 8 fasteners, ensuring robust performance. The kit features a chromoly construction with a durable black oxide finish. Available with either a reduced wrenching hex head or a 12-point head, these bolts are designed to facilitate easier re-torquing of cylinder heads, often without requiring the removal of the valvetrain. Specifically designed for 1997-2003 Gen III LS engines, this kit is compatible with 4.8L, 5.3L, 5.7L, and 6.0L displacements, including popular variants like LS1, LS6, LQ4, and LQ9. Installation involves lubricating the threads and bolt heads with ARP Ultra-Torque Fastener Assembly Lubricant before tightening hand tight.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand	ARP
Part Number	ARP-134-3609
Category	Engines and Components

Videos

How to Install LS Cylinder Heads with ARP Head Bolts and Why | The Dodgeball

LS3 Cylinder Head Install w/ARP Bolts

Home Depot LS Head Bolts? Dyno Kill Charts of ARP, OEM, L19 & More

Installing LS Heads With ARP Bolts | No BS Tech

LS Engine Tech: Measuring for Proper Push Rod Length

5,000+ Trusted brands

1M+ Enthusiasts

5M+ Parts sold

(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy