---
product_id: 429701135
title: "ARP 140-1101 Header Bolt Kit, 1 Pack"
brand: "arp"
price: "฿9333"
currency: THB
in_stock: true
reviews_count: 5
category: "Arp"
url: https://www.desertcart.co.th/products/429701135-arp-140-1101-header-bolt-kit-1-pack
store_origin: TH
region: Thailand
---

# M8x1.25 fully threaded precision 8740 chrome moly alloy steel strength 100% USA-made in-house manufacturing ARP 140-1101 Header Bolt Kit, 1 Pack

**Brand:** arp
**Price:** ฿9333
**Availability:** ✅ In Stock

## Summary

> 🔧 Bolt up like a pro — strength, precision, and American muscle in every turn!

## Quick Answers

- **What is this?** ARP 140-1101 Header Bolt Kit, 1 Pack by arp
- **How much does it cost?** ฿9333 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/429701135-arp-140-1101-header-bolt-kit-1-pack)

## Best For

- arp enthusiasts

## Why This Product

- Trusted arp brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted American Craftsmanship:** 100% manufactured in-house at ARP’s USA facility, ensuring top-tier quality control and reliability.
- • **Unmatched Strength & Durability:** Crafted from premium 8740 chrome moly alloy steel with a matte black oxide finish for superior heat and corrosion resistance.
- • **Complete Kit with Washers Included:** Everything you need in one pack of 16 hex head bolts plus washers, designed for hassle-free assembly.
- • **Precision Fit for Mopar Gen III Hemi:** Perfectly engineered 8mm x 1.25 thread bolts for a seamless, worry-free installation.
- • **Proven Performance & Customer Satisfaction:** Rated 4.6/5 by professionals who trust these bolts to hold tight through intense heat cycles and torque challenges.

## Overview

The ARP 140-1101 Header Bolt Kit is a premium set of 16 fully threaded M8x1.25 hex bolts made from high-grade 8740 chrome moly alloy steel with a black oxide finish. Designed specifically for Chrysler Mopar Gen III Hemi 5.7/6.1L engines, these bolts deliver exceptional strength, heat resistance, and durability. Manufactured entirely in-house in the USA, this kit ensures professional-grade quality and reliability for serious automotive enthusiasts and mechanics.

## Description

Header Bolt, 8 mm x 1.25 Thread, 1.181 in Long, Hex Head, Washers Included, Chromoly, Black Oxide, compatible with Mopar Gen III Hemi, Set of 16

Review: Good product - Great bolts fast shipping
Review: Nice Hardware - High quality and seem super strong. I did not feel like I had to worry about breaking a bolt while torquing them with odd ratchet and wrench setups due to difficulty in reaching them. I did do a re-torque after a few heat cycles and a few of the bolts did need to be snugged back down. Unsure if that was a result of not enough torque during initial install or if they backed out, but no issues since then. Overall happy with these.

## Features

- Chrysler Hemi 5.7/6.1L hex header bolt kit
- Material type: 8740 chrome Moly
- Finish: Black oxide
- Made in the USA
- 100% of fastener manufacturing is in-house at ARP

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N4JFF8D |
| Brand | ARP |
| Colour | Black |
| Compatible Groove Diameter | 8 Millimeters |
| Country Of Origin | USA |
| Customer Reviews | 4.6 out of 5 stars 134 Reviews |
| Exterior Finish | Oxide |
| Fastener Size | 8 mm |
| Fastener Type | Hexagon Bolt |
| Finish Types | matte |
| Global Trade Identification Number | 00672036048327 |
| Head Style | Hex |
| Head Type | Hex |
| Included Components | Header Bolt |
| Item Diameter | 8 Millimetres |
| Item Hardness | Grade 8.8 |
| Item Type Name | Header Bolt |
| Item Weight | 0.38 Kilograms |
| Manufacturer | ARP |
| Manufacturer Grade | Premium |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Metal Type | Alloy Steel |
| Model | 140-1101 |
| Number Of Items | 1 |
| Number of Pieces | 16 |
| Part Number | 140-1101 |
| Screw Head Style | Hex |
| Screw Point Style | Hex |
| Set Name | 1 Pack |
| Size Name | M8x1.25 |
| Thread Coverage | Fully Threaded |
| Thread Size | 8 mm |
| Thread Style | Right Hand, Metric, Full, 8 mm x 1.25 |
| Thread Type | Metric |
| UPC | 672036048327 |
| Unit Count | 1.0 Count |

## Product Details

- **Exterior Finish:** Oxide
- **Head Style:** Hex
- **Manufacturer Grade:** Premium
- **Material:** 8740 chrome moly
- **Thread Size:** 8 mm

## Images

![ARP 140-1101 Header Bolt Kit, 1 Pack - Image 1](https://m.media-amazon.com/images/I/710eoEAu+cL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by S***R on 29 August 2025*

Great bolts fast shipping

### ⭐⭐⭐⭐⭐ Nice Hardware
*by T***H on 11 August 2025*

High quality and seem super strong. I did not feel like I had to worry about breaking a bolt while torquing them with odd ratchet and wrench setups due to difficulty in reaching them. I did do a re-torque after a few heat cycles and a few of the bolts did need to be snugged back down. Unsure if that was a result of not enough torque during initial install or if they backed out, but no issues since then. Overall happy with these.

### ⭐⭐⭐⭐⭐ Ok
*by A***O on 1 December 2025*

Good bolts

## Frequently Bought Together

- ARP Header Bolt, 8 mm x 1.25 Thread, 1.181 in Long, Hex Head, Washers Included, Chromoly, Black Oxide, compatible with Mopar Gen III Hemi, Set of 16
- FEL-PRO MS 97083 Exhaust Manifold Gasket Set for Ram 1500
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**Shop now:** [https://www.desertcart.co.th/products/429701135-arp-140-1101-header-bolt-kit-1-pack](https://www.desertcart.co.th/products/429701135-arp-140-1101-header-bolt-kit-1-pack)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-07-20*