---
product_id: 420549712
title: "E-cowlboy 1 7/8 Inch Mainshaft Sprocket Wrench for 1936-2006 Harley-Davidson Big Twins & Twin Cam Engine, Socket Tool"
brand: "e-cowlboy"
price: "€ 171.47"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.sk/products/420549712-e-cowlboy-1-7-8-inch-mainshaft-sprocket-wrench-1936
store_origin: SK
region: Slovakia
---

# 1 7/8 inch precision fit Fits 1936-2006 Harley Big Twins & Twin Cam Black oxide corrosion resistance E-cowlboy 1 7/8 Inch Mainshaft Sprocket Wrench for 1936-2006 Harley-Davidson Big Twins & Twin Cam Engine, Socket Tool

**Brand:** e-cowlboy
**Price:** € 171.47
**Availability:** ✅ In Stock

## Summary

> 🔩 Unlock Harley Power with Precision & Style!

## Quick Answers

- **What is this?** E-cowlboy 1 7/8 Inch Mainshaft Sprocket Wrench for 1936-2006 Harley-Davidson Big Twins & Twin Cam Engine, Socket Tool by e-cowlboy
- **How much does it cost?** € 171.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/420549712-e-cowlboy-1-7-8-inch-mainshaft-sprocket-wrench-1936)

## Best For

- e-cowlboy enthusiasts

## Why This Product

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

## Key Features

- • **Risk-Free Purchase:** Backed by a 30-day full refund and 12-month warranty—because your Harley deserves the best.
- • **Versatile Compatibility:** Works seamlessly with 1936-2006 Big Twins and 1999-2006 Twin Cam engines (except 06 Dyna) for broad usability.
- • **Durable Black Oxide Finish:** Premium alloy steel with rust-resistant coating for long-lasting performance in any garage environment.
- • **Ergonomic 1/2" Drive Design:** Includes a threaded bushing and 5.5-inch depth for optimal leverage and control with standard ratchets or breaker bars.
- • **Precision Fit for Harley Big Twins:** Engineered specifically for 1 7/8'' mainshaft sprocket nuts, ensuring a perfect grip every time.

## Overview

The E-cowlboy 1 7/8 Inch Mainshaft Sprocket Wrench is a high-quality, black oxide coated alloy steel tool designed for precise removal and installation of mainshaft sprocket nuts on Harley-Davidson Big Twins and Twin Cam engines from 1936 to 2006 (excluding 06 Dyna). Featuring a 1/2" drive and ergonomic design, it offers durability, corrosion resistance, and compatibility, backed by a 30-day satisfaction guarantee and 12-month warranty.

## Description

▶Compatible with 1936-2006 Big Twins 1999-2006 Twin Cam ▶Features:  Main Shaft Sprocket Wrench Tool is for 1 7/8''nut. Aftermarket 6-speeds, Except 06 Dyna.  ▶Note:  1.Fits 1/2 Ratchet /Breaker bar. Not recommended for impact gun use. 2.Designed to remove & install the 1 7/8'' nut locking the trans pulley in position. 3.Please confirm whether your Engine is suitable in the list above Before Purchasing

## Features

- FITMENT-- This tool is a Main Shaft Sprocket Wrench Tool for all Harley front transmission pulley 1 7/8 socket sprocket. It will fit 1936-2006 Big Twins, 1999-2006 Twin Cam, except 06 Dyna.
- NICE DESIGN -- Back of the tool has a 1/2" Drive, with a Threaded Bushing. The tool is 5.5 inch deep.
- SUPERIOR QUALITY – Made of high quality steel coated with black oxide finish for rust and corrosion resistant, ensures an unparalleled long lifespan.
- 100% SATISFACTION GUARANTEE -- If you're not 100% satisfied with this tool, simply return it for a full refund in 30 days. Premium Support & 12-Month Warranty.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | E-cowlboy |
| Item Length | 1.87 Inches |
| Material | Alloy Steel |
| Finish Type | Black oxide |
| Number of Pieces | 1 |
| Drive System | Hex |
| Drive Bit Shank Style | Hex |
| UPC | 641197085823 |
| Bit Compatibilities | 1 7/8 inch |
| Manufacturer | harley-davidson |
| Model | 1 7/8 Inch Main shaft Pulley Socket |
| Item model number | YM178 |
| Manufacturer Part Number | YM178 |
| Country of Origin | USA |
| Item Weight | 1 kg 270 g |

## Product Details

- **Brand:** E-cowlboy
- **Item Length:** 1.87 Inches
- **Material:** Alloy Steel
- **Finish Type:** Black oxide
- **Number of Pieces:** 1

## Images

![E-cowlboy 1 7/8 Inch Mainshaft Sprocket Wrench for 1936-2006 Harley-Davidson Big Twins & Twin Cam Engine, Socket Tool - Image 1](https://m.media-amazon.com/images/I/716SMUYYkiL.jpg)

## Questions & Answers

**Q: will work 2018 road glide ultra?**
A: Yes the 2-1/4 works on the 2018 models.

**Q: Does it fit an '07 fxdwg?**
A: I think you need a 2 1/4" for an '07, this one is 1 7/8"

**Q: Will  work on an 08 street glide**
A: As long as it has the 21/4 nut on it

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Good tool
  

*by M***W on Reviewed in the United States on 12 March 2024*

This is a good investment the tool worked great preformed flawlessly used on 2000 HD Fatboy the aluminum piece that screws onto the shaft itself went on smoothly and the socket portion fit onto the drive pulley nut securely - great buy

### ⭐⭐⭐⭐⭐ 







  
  
    Worked awesome
  

*by M***M on Reviewed in Canada on 28 January 2024*

Fantastic !!

### ⭐⭐⭐⭐⭐ 







  
  
    Worked great!
  

*by J***T on Reviewed in the United States on 21 August 2023*

Couldn't bring myself to spend the money on the Jim's tool. This worked perfect for what I needed. Quality seems to be pretty great.

## Frequently Bought Together

- Mainshaft Sprocket Wrench for 1936-2006 Harley-Davidson Big Twins Engine & Twin Cam, 1 7/8 Inch Main shaft Pulley Socket Tool
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**Shop now:** [https://www.desertcart.sk/products/420549712-e-cowlboy-1-7-8-inch-mainshaft-sprocket-wrench-1936](https://www.desertcart.sk/products/420549712-e-cowlboy-1-7-8-inch-mainshaft-sprocket-wrench-1936)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-21*