---
product_id: 359307090
title: "ARP 234-2503 Balancer Bolt Kit"
brand: "arp"
price: "NZ$106"
currency: NZD
in_stock: true
reviews_count: 10
category: "Arp"
url: https://www.desertcart.nz/products/359307090-arp-234-2503-balancer-bolt-kit
store_origin: NZ
region: New Zealand
---

# 16mm x 2.0 Thread Precision Black Oxide Corrosion Resistance Grade 10.9 High-Strength Steel ARP 234-2503 Balancer Bolt Kit

**Brand:** arp
**Price:** NZ$106
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your ride with precision and power!

## Quick Answers

- **What is this?** ARP 234-2503 Balancer Bolt Kit by arp
- **How much does it cost?** NZ$106 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/359307090-arp-234-2503-balancer-bolt-kit)

## 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

- • **Sleek Black Oxide Finish:** Corrosion-resistant coating keeps your balancer bolt kit looking sharp and reliable.
- • **Trusted ARP Brand Quality:** Manufactured in the USA with rigorous standards for professional-grade automotive parts.
- • **Compact & Lightweight Design:** Only 1.01 lbs with a streamlined 10 x 6 x 1.75 inch profile for easy handling and storage.
- • **Precision Threading for Ultimate Fit:** 16mm x 2.0 UNC threads ensure seamless installation and maximum durability.
- • **Built to Endure with Grade 10.9 Steel:** High-strength alloy guarantees superior hardness and long-lasting performance under stress.

## Overview

The ARP234-2503 Balancer Bolt Kit is a premium automotive component featuring 16mm x 2.0 UNC threading, Grade 10.9 high-strength steel alloy construction, and a corrosion-resistant black oxide finish. Manufactured in the USA by ARP, this compact and lightweight kit delivers professional-grade durability and precision for enhanced engine performance.

## Description

Today, ARP's product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.

Review: Fits - Works great for ls
Review: Excellent product do not use factory bolt - This is a must buy you must use when replacing the harmonic balancer. If you don’t, you will have problems. Do not use the factory bolt.

## Features

- Product Type :Auto Part
- Package Dimensions :7.0 " L X 7.0 " W X 3.0 " H
- Country Of Origin :United States
- Package Weight :3.0Lbs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0785P5L8M |
| Best Sellers Rank | #56,455 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Replacement Engine Harmonic Balancer Repair Kits |
| Brand | ARP |
| Color | Black |
| Compatible Groove Diameter | 1 Inches |
| Customer Reviews | 4.9 out of 5 stars 109 Reviews |
| Drive System | Rear-Wheel Drive |
| Exterior Finish | Black Oxide |
| Fastener Size | 3/8 in - 16 TPI |
| Fastener Type | U-Bolt |
| Finish Types | glossy |
| Head Style | Hex |
| Head Type | Hex |
| Included Components | LS1, LS6 5.7L & 6.0L balancer bolt kit |
| Item Dimensions | 10 x 6 x 1.75 inches |
| Item Hardness | Grade 8 |
| Item Type Name | Balancer Bolt Kit |
| Manufacturer | ARP |
| Manufacturer Grade | heavy-duty |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Metal Type | Alloy Steel |
| Model | 234-2503 |
| Number Of Items | 1 |
| Part Number | 234-2503 |
| Screw Head Style | Hex |
| Screw Point Style | U-Shape |
| Set Name | Balancer Bolt Kit |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Size Name | 3/8 in - 16 TPI |
| Thread Class | 2A |
| Thread Coverage | Fully Threaded |
| Thread Size | 3/8"-16 UNC |
| Thread Style | Right Hand |
| Thread Type | Unc |
| UPC | 672036030315 |
| Unit Count | 1.0 Count |

## Product Details

- **Thread Size:** 16mm x 2.0
- **Exterior Finish:** Black Oxide
- **Head Style:** Round
- **Brand:** ARP
- **Thread Type:** Unc

## Images

![ARP 234-2503 Balancer Bolt Kit - Image 1](https://m.media-amazon.com/images/I/61HQAXn3fpL.jpg)

## Questions & Answers

**Q: Do you know if this will work for 2004 5.3ls**
A: I used these on my 2005 5.3 so my assumption would be yes. One thing to note is that it's a 12 point bolt so you will need a 12 point socket.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fits
*by A***N on March 15, 2026*

Works great for ls

### ⭐⭐⭐⭐⭐ Excellent product do not use factory bolt
*by J***F on September 24, 2025*

This is a must buy you must use when replacing the harmonic balancer. If you don’t, you will have problems. Do not use the factory bolt.

### ⭐⭐⭐⭐⭐ Impressive.
*by N***Z on June 4, 2025*

Make sure you get the 12 point socket when you buy this. I had an eight point and it did not fit. After getting the right socket, I installed this and let me tell you something, 235 foot pounds is nothing to shake a stick at. I am impressed.

## Frequently Bought Together

- ARP 234-2503 Balancer Bolt Kit
- Chelhead LS Flywheel Locking Tool Steel Black Oxide Flexplate Locking Holder Tool Compatible with Engine Chevy LS 1 2 3 LSX
- SEEBOO LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-05-15*