---
product_id: 67000250
title: "Powerbuilt 14mm Back Tap Spark Plug Thread Repair Tool, Straightening Tool, Motorcycle Spark Plugs, Repairs Damaged Threads, Collapsible Design - 640811"
brand: "powerbuilt"
price: "$121.73"
currency: USD
in_stock: true
reviews_count: 5
category: "Powerbuilt"
url: https://www.desertcart.ec/products/67000250-powerbuilt-14mm-back-tap-spark-plug-thread-repair-tool-straightening
store_origin: EC
region: Ecuador
---

# Repairs damaged spark plug threads Patented collapsible design Made in USA, ANSI certified Powerbuilt 14mm Back Tap Spark Plug Thread Repair Tool, Straightening Tool, Motorcycle Spark Plugs, Repairs Damaged Threads, Collapsible Design - 640811

**Brand:** powerbuilt
**Price:** $121.73
**Availability:** ✅ In Stock

## Summary

> 🛠️ Fix it right, the first time — thread repair redefined!

## Quick Answers

- **What is this?** Powerbuilt 14mm Back Tap Spark Plug Thread Repair Tool, Straightening Tool, Motorcycle Spark Plugs, Repairs Damaged Threads, Collapsible Design - 640811 by powerbuilt
- **How much does it cost?** $121.73 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/67000250-powerbuilt-14mm-back-tap-spark-plug-thread-repair-tool-straightening)

## Best For

- powerbuilt enthusiasts

## Why This Product

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

## Key Features

- • **Lightweight & Compact:** Portable 160g tool fits perfectly in any professional toolkit.
- • **Precision Thread Repair:** Restores spark plug threads flawlessly, preventing costly engine damage.
- • **Debris Removal Efficiency:** Extracts metal filings and debris while repairing for a clean finish.
- • **Trusted Quality Assurance:** Made in the USA and meets/exceeds ANSI standards for reliability.
- • **Innovative Collapsible Design:** Easily inserts through spark plug holes for seamless chamber access.

## Overview

The Powerbuilt 14mm Back Tap Spark Plug Thread Repair Tool features a patented collapsible design that allows it to be inserted through spark plug holes to repair damaged threads efficiently. Made in the USA and ANSI certified, this lightweight 160g tool not only restores threads but also removes debris, ensuring a clean and durable repair for motorcycle and automotive spark plugs.

## Description

The Back-Tap's patented collapsible design allows it to engage be placed through the spark plug hole and into the chamber. A mandrel is then drawn back, expanding the tool's threaded area and threading into the clean threads at the bottom of the spark plug hole. The Back tap repairs the damaged thread as it is drawn up through the spark plug hole, bringing debris and metal filings with it.

Review: Was skeptical but it worked - Restored the thread of a spark plug hole in my Renault cylinder head which had been lightly threaded a few turns. As other reviewers have said, take your time to figure out how the tool works before going in. I passed it through three times as instructed and needed pliers to expand it because of tight access.
Review: Take your time and it works - I printed out the 5 star review by HarleyRider, and carefully followed its advice. Result: I sorted out a crossed spark plug thread on my 1972 T series Bentley, without having to remove the affected cylinder head.

## Features

- Back-Tap's patented collapsible design allows it to engage be placed through the spark plug hole and into the chamber
- Made in USA. Meets or exceeds ANSI standards.
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Powerbuilt |
| Brand | Powerbuilt |
| Model | Back-Tap Thread Repair To |
| Product Dimensions | 12.17 x 22.86 x 2.54 cm; 160 g |
| Item model number | 640811 |
| Manufacturer part number | 640811 |
| Item Weight | 160 g |

## Images

![Powerbuilt 14mm Back Tap Spark Plug Thread Repair Tool, Straightening Tool, Motorcycle Spark Plugs, Repairs Damaged Threads, Collapsible Design - 640811 - Image 1](https://m.media-amazon.com/images/I/71PYfVRFEZL.jpg)
![Powerbuilt 14mm Back Tap Spark Plug Thread Repair Tool, Straightening Tool, Motorcycle Spark Plugs, Repairs Damaged Threads, Collapsible Design - 640811 - Image 2](https://m.media-amazon.com/images/I/71cJy1fnt9L.jpg)
![Powerbuilt 14mm Back Tap Spark Plug Thread Repair Tool, Straightening Tool, Motorcycle Spark Plugs, Repairs Damaged Threads, Collapsible Design - 640811 - Image 3](https://m.media-amazon.com/images/I/71g--zJuDZL.jpg)
![Powerbuilt 14mm Back Tap Spark Plug Thread Repair Tool, Straightening Tool, Motorcycle Spark Plugs, Repairs Damaged Threads, Collapsible Design - 640811 - Image 4](https://m.media-amazon.com/images/I/71lf0gC-W5L.jpg)
![Powerbuilt 14mm Back Tap Spark Plug Thread Repair Tool, Straightening Tool, Motorcycle Spark Plugs, Repairs Damaged Threads, Collapsible Design - 640811 - Image 5](https://m.media-amazon.com/images/I/71sHB1LAR0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Was skeptical but it worked
*by T***J on 12 August 2025*

Restored the thread of a spark plug hole in my Renault cylinder head which had been lightly threaded a few turns. As other reviewers have said, take your time to figure out how the tool works before going in. I passed it through three times as instructed and needed pliers to expand it because of tight access.

### ⭐⭐⭐⭐⭐ Take your time and it works
*by C***R on 25 July 2025*

I printed out the 5 star review by HarleyRider, and carefully followed its advice. Result: I sorted out a crossed spark plug thread on my 1972 T series Bentley, without having to remove the affected cylinder head.

### ⭐⭐⭐⭐⭐ Works
*by G***M on 23 December 2024*

Excellent bit of kit reasonably priced and works like a dream

## Frequently Bought Together

- Powerbuilt 14mm Back Tap Thread Repair Tool - 640811
- ARES 70692 – M14 x 1.25 Limited Access Spark Plug Thread Chaser Tool – Low Profile Design for Confined Areas – 5/8-Inch Hex Head with 3/8-Inch Square Drive Design for Superior Versatility
- Lisle 20020 Limited Access Spark Plug

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**Shop now:** [https://www.desertcart.ec/products/67000250-powerbuilt-14mm-back-tap-spark-plug-thread-repair-tool-straightening](https://www.desertcart.ec/products/67000250-powerbuilt-14mm-back-tap-spark-plug-thread-repair-tool-straightening)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-22*