---
product_id: 561331397
title: "AutoLine Pro Premium Cone and Plugs 2-in-1 Adapters | for Automotive Smoke Machine Leak Testing | Cone & Cap Plugs Function | CarbonNitrile™ | Patented Design."
brand: "autoline pro"
price: "€ 111.94"
currency: EUR
in_stock: true
reviews_count: 5
category: "Auto Line Pro"
url: https://www.desertcart.sk/products/561331397-autoline-pro-premium-cone-and-plugs-2-in-1-adapters
store_origin: SK
region: Slovakia
---

# Fits tubes 0.125" to 3.7" diameter 2-in-1 cone & cap plug function 3-year warranty, USA-made durability AutoLine Pro Premium Cone and Plugs 2-in-1 Adapters | for Automotive Smoke Machine Leak Testing | Cone & Cap Plugs Function | CarbonNitrile™ | Patented Design.

**Brand:** autoline pro
**Price:** € 111.94
**Availability:** ✅ In Stock

## Summary

> 🚗 Leak testing made sleek: The ultimate 2-in-1 adapter for pros who demand precision.

## Quick Answers

- **What is this?** AutoLine Pro Premium Cone and Plugs 2-in-1 Adapters | for Automotive Smoke Machine Leak Testing | Cone & Cap Plugs Function | CarbonNitrile™ | Patented Design. by autoline pro
- **How much does it cost?** € 111.94 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/561331397-autoline-pro-premium-cone-and-plugs-2-in-1-adapters)

## Best For

- autoline pro enthusiasts

## Why This Product

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

## Key Features

- • **Universal Fit Range:** Seamlessly fits tubes from 1/8" to 3.7"—covering all your automotive needs.
- • **Dual-Function Design:** Inject smoke or seal leaks with one smart adapter.
- • **OEM Dual Tailpipe Ready:** Test exhaust leaks by plugging one tailpipe and injecting smoke into the other.
- • **Patented Stackable Storage:** Neatly stacks for clutter-free storage and quick access.
- • **CarbonNitrile™ Durability:** Engineered for resilience—wear-resistant and built to last.

## Overview

The AutoLine Pro Premium Cone and Plugs 2-in-1 Adapters combine a cone for smoke injection and cap plugs for sealing openings, crafted from durable CarbonNitrile™. Designed to fit a wide range of tube sizes (0.125" to 3.7" diameter) and compatible with OEM dual 2" tailpipes, this patented, USA-made tool offers professional-grade leak testing with a 3-year warranty for reliable, hassle-free performance.

## Description

The AutoLine Pro cone x plugs combo adapters 2-in-1 set functions as both a cone adapter for injecting smoke and plugs to seal openings like cap plugs. The set is made of high grade carbon nitrile which is extremely resilient to wear and tear. Max diameter is 3.75". Stacks and stores neatly. Patent Pending.

Review: Easy to work with and reliable. Yet to have any problems with it and I’ve had it for 2 years. Worth the buy.
Review: Quality items at a good price. Fast shipping. Reputable family-owned business! Highly recommended!

## Features

- 2-IN-1 FUNCTION: CONE for injecting smoke into larger openings for automotive leak testing. CAP PLUGS for blocking off openings that smoke will escape from.
- VERSATILE SIZES: Max diameter 3.7" [94mm]. Min diameter tube 0.125" [3.2mm]. Fits most common tube hose sizes 1/8", 1/4", 3/8", 1/2", 3/4, 1", and more.
- DUAL TAILPIPE COMPATIBLE: Designed for OEM standard and most common 2" dual tailpipes. Plug up one tailpipe and inject smoke into the other to test for exhaust leaks.
- CARBON NITRILE: Extremely durable and highly resilient to wear and tear.
- PATENTED PRODUCT: Intelligently Designed. Stacks and stores neatly.
- THREE-YEAR WARRANTY!: You're fully covered from all manufacturer and operational defects. We're right here in the United States and will replace your unit or parts - fast and hassle free :)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BVGZPSV8 |
| Assembly Required | No |
| Brand | AutoLine Pro |
| Country of Origin | USA |
| Customer Reviews | 4.8 4.8 out of 5 stars (301) |
| Date First Available | 21 February 2023 |
| Generic Name | cone cap plugs adapter for automotive smoke machine leak testing |
| Item Weight | 195 g |
| Item model number | ConeCapPlugs |
| Manufacturer | AutoLine Pro |
| Manufacturer Part Number | CONE PLUGS |
| Material | CarbonNitrile™ |
| Model | CONE X PLUGS |
| Package Dimensions | 19 x 10.1 x 4.7 cm; 195 g |

## Images

![AutoLine Pro Premium Cone and Plugs 2-in-1 Adapters | for Automotive Smoke Machine Leak Testing | Cone & Cap Plugs Function | CarbonNitrile™ | Patented Design. - Image 1](https://m.media-amazon.com/images/I/71+gYWtnmCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***Z on 15 November 2025*

Easy to work with and reliable. Yet to have any problems with it and I’ve had it for 2 years. Worth the buy.

### ⭐⭐⭐⭐⭐ Review
*by D***X on 26 January 2026*

Quality items at a good price. Fast shipping. Reputable family-owned business! Highly recommended!

### ⭐⭐⭐⭐⭐ Review
*by A***N on 29 September 2025*

This Automotive AutoLine Smoke Machine Leak Detector Cone and Plugs were a great investment in attachments. These items were easy to use and worked perfectly as described in the advertisement. The instructions were easy to understand with no problems.

## Frequently Bought Together

- AutoLine Pro Premium Cone and Plugs 2-in-1 Adapters | for Automotive Smoke Machine Leak Testing | Cone & Cap Plugs Function | CarbonNitrile™ | Patented Design.
- AutoLine Pro EVAP High Volume Smoke Machine Leak Tester with Built-in Air Pump - Shop Series Plus - Automotive Smoke Tester for Vacuum Leak Detection - Ceramic Smoke Coil and Best Ranked Smoke Fluid
- AutoLine Pro Best Ranked Bladder Adapter 2.0 | Automotive Smoke Testing 1.5" to 6" (38-152mm) Diamter Openings | 3-in-1 Functions as Bladder, Inflatable Plug, and Smoke Diffuser for Water Leak Testing

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**Shop now:** [https://www.desertcart.sk/products/561331397-autoline-pro-premium-cone-and-plugs-2-in-1-adapters](https://www.desertcart.sk/products/561331397-autoline-pro-premium-cone-and-plugs-2-in-1-adapters)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-10*