--- product_id: 47967853 title: "Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1\" (202148)" brand: "silverline" price: "£6.57" currency: GBP in_stock: true reviews_count: 13 category: "Silverline" url: https://www.desertcart.co.uk/products/47967853-silverline-spark-plug-gap-tool-0-5-2-55mm-0 store_origin: GB region: United Kingdom --- # Dual metric & imperial scales Flanged hole for safe wire adjustment 0.5-2.55mm precision gap range Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148) **Brand:** silverline **Price:** £6.57 **Availability:** ✅ In Stock ## Summary > ⚡ Tune your engine like a pro—never miss the spark that drives your ride! ## Quick Answers - **What is this?** Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148) by silverline - **How much does it cost?** £6.57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/47967853-silverline-spark-plug-gap-tool-0-5-2-55mm-0) ## Best For - silverline enthusiasts ## Why This Product - Trusted silverline brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Portable:** Coin-sized design fits effortlessly on your keyring—always ready when your engine demands precision. - • **Durable Alloy Steel:** Crafted from solid alloy steel with a bright zinc finish for long-lasting reliability in any workshop or roadside scenario. - • **Precision Perfected:** Accurately measures spark plug gaps from 0.5 to 2.55mm (0.02-0.1") for flawless engine performance. - • **Damage-Free Adjustment:** Innovative flanged hole lets you tweak side wires without harming the delicate center electrode. - • **Dual-Scale Convenience:** Seamlessly switch between metric and imperial units—engineered for global pros and DIY enthusiasts alike. ## Overview The Silverline Spark Plug Gap Tool 202148 is a compact, coin-type gauge crafted from durable alloy steel with a bright zinc finish. It offers precise gap measurement from 0.5 to 2.55mm (0.02 to 0.1 inches) in both metric and imperial units. Featuring a flanged hole for safe side wire adjustment without damaging the center electrode, this tool is universally compatible with motorcycles and other vehicles. Its portable design fits on a keyring, making it an essential, easy-to-carry accessory for professional mechanics and passionate DIYers alike. ## Description From the manufacturer Silverline 202148 Spark Plug Gap Tool Coin-type tool with flanged hole to adjust the side wire without damaging the centre element and outer rim to measure the electrode gap. Metric 0.5 - 2.55mm, imperial 0.02 - 0.1". Solid alloy steel. Finish: Bright zinc alloy Review: Great idea - I bought this for my husband. It's a cracking little tool and can be used often with what he does. He loved it and also loved the fact it can be put on a keyring and carried everywhere without inconvenience Review: A must have. - This is a must have for all people that need to check spark plug gaps. Much easier to use for spark plugs than selecting the correct feeler gauge, just slide the spark plug around the tool to the desired gap and close the plug gap to suit. Metric on one side and imperial measurement on the other. I have not checked accuracy against a set of feeler gauges but found it perfect for my engines. ## Features - Solid alloy steel - Metric (0.5 - 2.55mm) & imperial (0.02 - 0.1") - Flanged hole allows adjustment of side wire without damaging centre element ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00865SXQ4 | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | 137,453 in DIY & Tools ( See Top 100 in DIY & Tools ) 528 in Hand Tool Sets | | Brand | Silverline | | Brand Name | Silverline | | Compatible with Vehicle Type | Motorcycle | | Core Material | Alloy Steel | | Core material | Alloy Steel | | Country Of Origin | China | | Customer Reviews | 4.5 out of 5 stars 1,387 Reviews | | Gap Size | 2.55 Millimeters | | Global Trade Identification Number | 05024763079771 | | Included Components | 1x Spark Plug Gap Tool (0.5 - 2.55mm / 0.02 - 0.1") | | Item Type Name | Spark Plug Gap Tool | | Item Weight | 0.02 Grams | | Manufacturer | Silverline | | Manufacturer Part Number | 202148 | | Manufacturer Warranty Description | Manufacturer | | Model Number | 202148 | | Thread Size | M14x1.25 | | Thread size | M14x1.25 | | Top Material Type | Alloy Steel | | Top material type | Alloy Steel | | UPC | 798256107603 | | Vehicle service type | Motorcycle | ## Product Details - **Brand:** Silverline - **Core material:** Alloy Steel - **Thread size:** M14x1.25 - **Top material type:** Alloy Steel - **Vehicle service type:** Motorcycle ## Images ![Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148) - Image 1](https://m.media-amazon.com/images/I/71f1xNFwWsL.jpg) ![Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148) - Image 2](https://m.media-amazon.com/images/I/71WqGX3ByeL.jpg) ![Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148) - Image 3](https://m.media-amazon.com/images/I/51JkOvPdv6L.jpg) ![Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148) - Image 4](https://m.media-amazon.com/images/I/51msIpeZdnL.jpg) ![Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148) - Image 5](https://m.media-amazon.com/images/I/41toWVWl06L.jpg) ## Available Options This product comes in different **Item Package Quantity, Style** options. ## Questions & Answers **Q: How does this gap up to 2.55mm when it only goes to 1mm in the pictures?** A: This may be a misprint.. As you can see from the pictures the imperial side goes up to 0.1 inches, and the metric side has markings up to 2.15mm (i think) However what spark plugs have that sort of gap anyway. This is a very useful tool, simple accurate and straightforward to use **Q: Does this actually adjust the gap as well as measure it** A: Yes it can open/increase the spark plug gap by inserting the edge between the electrodes and 'easing' them apart very carefully. Unfortunately, it has no facility for decreasing the gap, for that I very carefully press the plug electrode against a door frame or other solid surface. **Q: Is this suitable for diesel engines?** A: The clue is in the title. Don't have sparkplugs on diesel engines. **Q: question. can it check gap in points** A: It is OK for plugs but far too cumbersome for checking points - you need to use blade type feeler gauges which are much narrower and will fit easily between the points in a distributor . Put the words "feeler gauges" into Amazon's search engine and you will find the folding multiple blade type. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great idea *by C***O on 3 December 2024* I bought this for my husband. It's a cracking little tool and can be used often with what he does. He loved it and also loved the fact it can be put on a keyring and carried everywhere without inconvenience ### ⭐⭐⭐⭐⭐ A must have. *by C***W on 26 August 2019* This is a must have for all people that need to check spark plug gaps. Much easier to use for spark plugs than selecting the correct feeler gauge, just slide the spark plug around the tool to the desired gap and close the plug gap to suit. Metric on one side and imperial measurement on the other. I have not checked accuracy against a set of feeler gauges but found it perfect for my engines. ### ⭐⭐⭐⭐ Quick and Simple to Use *by D***T on 24 June 2021* This is a useful tool - forget feeler gauges, this is easier and quicker to check a gap on a plug. I have feeler gauges but this is better as the feeler gauges are far more delicate and easier to damage or loose some of them in the bottom of a toolbox. This is more robust, easier and quicker to use. It is cheap too. Manufacturing quality is adequate rather than very good hence 4 stars. Recommended. ## Frequently Bought Together - Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148) - Sealey Vs526 in-Line Ignition Spark Tester - Spurtar Feeler Gauges Stainless Steel 32 Blades 0.04-0.88 mm (0.0015-0.035 Inch) Feeler Gauge Metric/Imperial for Measuring Gap Width Thickness for Guitar, Spark Plug, Valve, Piston Measure --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/47967853-silverline-spark-plug-gap-tool-0-5-2-55mm-0](https://www.desertcart.co.uk/products/47967853-silverline-spark-plug-gap-tool-0-5-2-55mm-0) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-29*