Exoracing O2 Sensor Plug M18x1.5 304 Stainless Steel

<div class="pdp-buying-guide"> <h2>Choose The Right O2 Sensor Plug For Your Exhaust System</h2> <p>The Exoracing O2 sensor plug is designed to block off an unused lambda sensor or wideband sensor port in an exhaust system. It is ideal when you have an aftermarket exhaust, decat pipe, downpipe, test pipe, manifold or custom exhaust section with an unused M18x1.5 sensor boss.</p> <ul> <li><strong>Thread size:</strong> M18x1.5, the common thread used on many narrowband and wideband lambda sensor ports.</li> <li><strong>Material:</strong> CNC-machined 304 stainless steel for corrosion resistance and long-term exhaust use.</li> <li><strong>Included:</strong> 1 Exoracing O2 sensor plug and Exoracing lifetime warranty.</li> <li><strong>Install note:</strong> removable threaded plug, so the lambda port can be used again later if needed.</li> </ul> <p><strong>Important:</strong> Check your exhaust sensor boss thread before ordering. This plug is for M18x1.5 threaded lambda/O2 sensor ports.</p> </div> <h2>Which Option Should I Choose?</h2> <ul> <li><strong>M18x1.5 lambda/O2 port:</strong> choose this plug if your exhaust boss uses the common M18x1.5 sensor thread.</li> <li><strong>Aftermarket exhausts:</strong> use this to block an unused sensor port on a downpipe, decat, test pipe, manifold or custom exhaust section.</li> <li><strong>Unsure thread size:</strong> measure the existing sensor thread or check the exhaust manufacturer&rsquo;s specifications before ordering.</li> </ul> <h2>Why Should You Use The Exoracing O2 Sensor Plug?</h2> <p>Many OEM and aftermarket exhaust systems have one or more lambda sensor ports. If one of those ports is not being used, it needs to be sealed properly to stop exhaust leaks, noise, false readings and unwanted fumes.</p> <p>The Exoracing O2 sensor plug gives you a clean, removable way to block an unused M18x1.5 lambda port without welding the boss shut.</p> <p>Because it is CNC machined from 304 stainless steel, it is suitable for harsh exhaust environments where heat, moisture and corrosion are common problems.</p> <p>This is a useful add-on for road, track, turbo, wideband, decat, custom exhaust and fabrication jobs where you need to blank off an unused O2 sensor port properly.</p> <h2>Purchase Includes:</h2> <ul> <li>1 x Exoracing O2 Sensor Plug M18x1.5 304 Stainless Steel</li> <li>1 x Exoracing Lifetime Warranty</li> </ul> <h2>Features:</h2> <ul> <li>Blocks off unused lambda and O2 sensor ports</li> <li>M18x1.5 thread suits many universal lambda sensor bosses</li> <li>CNC machined from 304 stainless steel</li> <li>Removable design allows the sensor port to be reused later</li> <li>19mm hex head works with a common socket size</li> <li>Useful for aftermarket exhausts, decats, downpipes, test pipes and custom fabrication</li> <li>Helps prevent exhaust leaks from unused sensor ports</li> <li>Includes Exoracing lifetime warranty</li> </ul> <h2>Exoracing O2 Sensor Plug M18x1.5 Installation Guide:</h2> <p>This is a simple threaded installation, but the exhaust must be cold before fitting.</p> <ol> <li>Allow the exhaust system to cool fully before starting work.</li> <li>Confirm the lambda/O2 sensor boss uses an M18x1.5 thread.</li> <li>Check that the port threads are clean and free from damage.</li> <li>Screw the O2 sensor plug into the boss by hand first to avoid cross-threading.</li> <li>Use a 19mm socket to tighten the plug.</li> <li>Torque to 40 to 60Nm where access allows.</li> <li>Start the vehicle and check the area for exhaust leaks once fitted.</li> </ol> <p><strong>Installation difficulty:</strong> simple service item, but professional installation is recommended if access is difficult or the exhaust threads are damaged.</p> <p><strong>Reason to buy now:</strong> fit this while the exhaust, downpipe, decat or manifold is already off the car, as access is usually much easier.</p> <h2>Technical Specifications:</h2> <table style="border-collapse: collapse; width: 100%; border: 1px solid #d8c4e8;" border="1"> <tbody> <tr> <td style="width: 50%; background-color: #4b1f73; color: #ffffff; padding: 8px;"><strong><span style="color: #ffffff;">Specification</span></strong></td> <td style="width: 50%; background-color: #4b1f73; color: #ffffff; padding: 8px;"><strong><span style="color: #ffffff;">Details</span></strong></td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Product Type</strong></td> <td style="color: #222222; padding: 8px;">O2 sensor plug/lambda sensor blanking plug</td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Material</strong></td> <td style="color: #222222; padding: 8px;">304 stainless steel</td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Thread Size</strong></td> <td style="color: #222222; padding: 8px;">M18x1.5</td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Length</strong></td> <td style="color: #222222; padding: 8px;">20mm</td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Width</strong></td> <td style="color: #222222; padding: 8px;">22mm</td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Weight</strong></td> <td style="color: #222222; padding: 8px;">40g</td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Socket Size</strong></td> <td style="color: #222222; padding: 8px;">19mm</td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Torque Setting</strong></td> <td style="color: #222222; padding: 8px;">40 to 60Nm</td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Application</strong></td> <td style="color: #222222; padding: 8px;">Unused M18x1.5 lambda/O2 sensor ports</td> </tr> <tr> <td style="background-color: #f4eef9; color: #222222; padding: 8px;"><strong>Warranty</strong></td> <td style="color: #222222; padding: 8px;">Exoracing Lifetime Warranty</td> </tr> </tbody> </table> <h2>Recommended With This Product:</h2> <ul> <li><a style="color: #562773; font-weight: bold; text-decoration: underline;" href="https://exoracing.co.uk/exoracing-o2-lambda-sensor-bung-m18x1-5-304-stainless-steel/">Exoracing O2 Lambda Sensor Bung M18x1.5 304 Stainless Steel</a> if you need to add a new lambda sensor port to an exhaust system.</li> <li><a style="color: #562773; font-weight: bold; text-decoration: underline;" href="https://exoracing.co.uk/exoracing-titanium-exhaust-wrap/">Exoracing Titanium Exhaust Wrap</a> if the exhaust section is already removed, and you want to reduce radiant heat.</li> <li><a style="color: #562773; font-weight: bold; text-decoration: underline;" href="https://exoracing.co.uk/exoracing-stainless-steel-cable-ties/">Exoracing Stainless Steel Cable Ties</a> if you are fitting exhaust wrap at the same time.</li> </ul> <h2>Frequently Asked Questions</h2> <h3>What does this O2 sensor plug do?</h3> <p>It blocks off an unused lambda or O2 sensor port in an exhaust system, helping seal the port and prevent exhaust leaks.</p> <h3>What thread size is this plug?</h3> <p>This plug uses an M18x1.5 thread, which is commonly used for narrowband and wideband lambda sensor ports.</p> <h3>Will this fit my exhaust?</h3> <p>It will fit if your exhaust sensor boss is M18x1.5. Always confirm the thread before ordering, especially on custom exhausts or imported exhaust systems.</p> <h3>Can I remove it later?</h3> <p>Yes. Because this is a threaded plug, it can be removed later if you need to install a lambda sensor or a wideband sensor into the port.</p> <h3>What socket size do I need?</h3> <p>The plug uses a 19mm socket.</p> <h3>What torque should I use?</h3> <p>Torque to 40 to 60Nm where access allows. Do not force the plug if the threads are damaged or dirty.</p> <h3>Should I use this in a stainless steel boss?</h3> <p>Ideally, this stainless steel O2 sensor plug should be used in a stainless steel boss for best long-term compatibility.</p> <h2>Notes:</h2> <ul> <li>Designed for M18x1.5 lambda/O2 sensor ports only.</li> <li>Confirm the boss's thread before ordering.</li> <li>Install by hand first to avoid cross-threading.</li> <li>Use on a cold exhaust only.</li> <li>Torque to 40 to 60Nm where access allows.</li> <li>Ideally used with a stainless steel boss.</li> <li>Professional installation is always recommended.</li> </ul> <div class="exo-v2-related-source-grid"> <div class="exo-v2-related-source-card is-current"><img src="https://cdn11.bigcommerce.com/s-2qhgaelfmo/products/304/images/60784/exoracing-02-lambda-blanking-plug-1__38125.1729182549.386.513.JPG?c=2" alt="Exoracing o2 Sensor Plug M18x1.5 304 Stainless Steel" width="386" height="513" /> <span class="exo-v2-related-source-eyebrow">Electrical and monitoring</span> <h3 class="exo-v2-related-source-title">Exoracing O2 Sensor Plug M18x1.5 304 Stainless Steel</h3> <p class="exo-v2-related-source-text">Blocks unused M18x1.5 lambda ports</p> <a href="#exo-v2-buy">Choose this product</a></div> <div class="exo-v2-related-source-card"><img src="https://cdn11.bigcommerce.com/s-2qhgaelfmo/products/689/images/83820/exoracing-02-lambda-eml-spacer__28137.1729182556.386.513.JPG?c=2" alt="Exoracing O2 Lambda Sensor Spacer M18x1.5 304 Stainless Steel" width="386" height="513" /> <span class="exo-v2-related-source-eyebrow">Electrical and monitoring</span> <h3 class="exo-v2-related-source-title">Exoracing O2 Lambda Sensor Spacer M18x1.5 304 Stainless Steel</h3> <p class="exo-v2-related-source-text">M18x1.5 thread to fit OEM and aftermarket lambda sensors</p> <a href="../../../../exoracing-o2-lambda-sensor-spacer-m18x1-5-304-stainless/">View product</a></div> <div class="exo-v2-related-source-card"><img src="https://cdn11.bigcommerce.com/s-2qhgaelfmo/products/305/images/60785/exoracing-02-lambda-weld-in-adapter__94776.1778776571.386.513.JPG?c=2" alt="Exoracing M18x1.5 O2 lambda sensor weld-in adapter close up" width="386" height="513" /> <span class="exo-v2-related-source-eyebrow">Performance hardware</span> <h3 class="exo-v2-related-source-title">Exoracing O2 Lambda Sensor Adapter Weld In Nut M18x1.5 Stainless Steel</h3> <p class="exo-v2-related-source-text">Adds an M18x1.5 lambda sensor port.</p> <a href="../../../../exoracing-o2-lambda-sensor-adapter-weld-in-nut-m18x1-5-stainless-steel/">View product</a></div> <div class="exo-v2-related-source-card"><img src="https://cdn11.bigcommerce.com/s-2qhgaelfmo/products/692/images/60866/exoracing-t-piece-oil-adapter__47655.1729182557.386.513.JPG?c=2" alt="Exoracing 1/8&quot;Npt to An04 T-Piece Oil Feed Pressure Sensor Adapter" width="386" height="513" /> <span class="exo-v2-related-source-eyebrow">Electrical and monitoring</span> <h3 class="exo-v2-related-source-title">Exoracing 1/8"Npt to An04 T-Piece Oil Feed Pressure Sensor Adapter</h3> <p class="exo-v2-related-source-text">Adds an AN04 turbo oil-feed connection and a 1/8-inch NPT sensor port</p> <a href="../../../../exoracing-1-8npt-to-an04-t-piece-oil-feed-pressure-sensor-adapter/">View product</a></div> </div>

Exoracing Ltd offers a lifetime warranty against manufacturing defects on this Exoracing Ltd product for peace of mind and a risk-free buying experience! We have 100% faith in our products and know they are of the highest quality, so where most manufacturers offer a year, we decided to offer a massive lifetime warranty.

Exoracing Ltd lifetime warranty will cover repairing, replacing, or store credit to the same purchase value if the part has since been discontinued, at our discretion, for any Exoracing Ltd product that is found defective.

Exoracing Ltd's lifetime warranty policy will only apply if the product was purchased through ourselves or an officially licenced distributor in our network.

This warranty policy is non-transferable and all claims under this policy must be accompanied by the original receipt of sale.