--- product_id: 270510586 title: "Quicksilver Engine Water Temperature Gauge Sender 806490T - for MerCruiser Stern Drives and Inboard Engines" brand: "quicksilver" price: "$119.33" currency: USD in_stock: true reviews_count: 5 category: "Quicksilver" url: https://www.desertcart.us/products/270510586-quicksilver-engine-water-temperature-gauge-sender-806490t-for-mercruiser-stern store_origin: US region: United States of America --- # Easy install with common tools OEM spec certified ±2.0% accuracy Quicksilver Engine Water Temperature Gauge Sender 806490T - for MerCruiser Stern Drives and Inboard Engines **Brand:** quicksilver **Price:** $119.33 **Availability:** ✅ In Stock ## Summary > 🌊 Stay cool, stay ahead — the ultimate gauge for your MerCruiser engine! ## Quick Answers - **What is this?** Quicksilver Engine Water Temperature Gauge Sender 806490T - for MerCruiser Stern Drives and Inboard Engines by quicksilver - **How much does it cost?** $119.33 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/270510586-quicksilver-engine-water-temperature-gauge-sender-806490t-for-mercruiser-stern) ## Best For - quicksilver enthusiasts ## Why This Product - Trusted quicksilver brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **OEM-Grade Reliability:** Built to Mercury Marine original equipment specs, ensuring seamless compatibility and durability. - • **Effortless Installation:** Designed for quick, tool-friendly setup—get back on the water faster without the hassle. - • **Rugged Marine-Ready Design:** Engineered to withstand harsh marine environments, delivering consistent readings every time. - • **Trusted Legacy of Excellence:** Backed by Quicksilver’s 65+ years of marine industry leadership and rigorous testing standards. - • **Precision Temperature Monitoring:** Keep your MerCruiser engine in the optimal zone with ±2.0% accuracy for reliable performance. ## Overview The Quicksilver Engine Water Temperature Gauge Sender 806490T is a precision analog sensor designed specifically for MerCruiser stern drives and inboard engines. It offers ±2.0% measurement accuracy, meets Mercury Marine OEM specifications, and features a rugged, easy-to-install design. Trusted by marine professionals for over 65 years, this sender ensures reliable engine temperature monitoring to protect and optimize your marine power system. ## Description Engine water temperature gauge sender 806490T is for use with MerCruiser sterndrive and inboard engines. See your owner's manual or service manual for specific applications and replacement instructions.The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine original Equipment replacement engine parts, oils, and accessories, but also works to serve all original Equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance, protection and peace of mind. Review: Good sensor - Works perfect Review: Perfect fit - It was a perfect fit, fixed my intermittent temperature sending problems and it was a lot cheaper than going to the boat store. ## Features - For use with MerCruiser stern drive and inboard engine applications. - Easy to install with common shop tools. - Always use Quicksilver instruments with Mercury and Mariner outboards and MerCruiser stern drives and inboards. - See your owner's manual or service manual for specific applications and replacement instructions. - Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003905OHM | | Best Sellers Rank | #253,187 in Automotive ( See Top 100 in Automotive ) #86 in Automotive Water Temperature Gauges | | Brand | Quicksilver | | Brand Name | Quicksilver | | Customer Reviews | 4.6 out of 5 stars 312 Reviews | | Global Trade Identification Number | 00745061495128 | | Included Components | End Product & Information | | Item Dimensions | 44 x 22 x 22 millimeters | | Item Type Name | Marine Product | | Item Weight | 32 g | | Item dimensions L x W x H | 44 x 22 x 22 millimeters | | Item weight | 32 g | | Manufacturer | Quicksilver | | Material | Various Materials | | Material Type | Various Materials | | Measurement Accuracy | ±2.0% | | Measurement accuracy | ±2.0% | | Model | 806490T | | Mounting Type | Surface Mount | | Number of Items | 1 | | Number of Packs | 1 | | Output Type | analog | | Part Number | 806490T | | Specific Uses For Product | marine engine temperature measurement, marine engine temperature monitoring | | Style | rugged | | Style Name | rugged | | UPC | 745061495128 | | Unit Count | 1 Count | | Upper Temperature Rating | 120 Degrees Celsius | ## Product Details - **Brand:** Quicksilver - **Material:** Various Materials - **Item dimensions L x W x H:** 44 x 22 x 22 millimeters - **Item weight:** 32 Grams - **Screen size:** 0.87 Inches ## Images ![Quicksilver Engine Water Temperature Gauge Sender 806490T - for MerCruiser Stern Drives and Inboard Engines - Image 1](https://m.media-amazon.com/images/I/61OMQiQotqL.jpg) ![Quicksilver Engine Water Temperature Gauge Sender 806490T - for MerCruiser Stern Drives and Inboard Engines - Image 2](https://m.media-amazon.com/images/I/61y1ajtje1L.jpg) ![Quicksilver Engine Water Temperature Gauge Sender 806490T - for MerCruiser Stern Drives and Inboard Engines - Image 3](https://m.media-amazon.com/images/I/61W6ZTZ2XjL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good sensor *by D***N on 5 September 2025* Works perfect ### ⭐⭐⭐⭐⭐ Perfect fit *by R***. on 15 October 2025* It was a perfect fit, fixed my intermittent temperature sending problems and it was a lot cheaper than going to the boat store. ### ⭐⭐⭐⭐⭐ excellent product fit perfectly *by A***R on 16 September 2023* OEM quality perfect fit and operation, you get what you pay for, ## Frequently Bought Together - Quicksilver 806490T Engine Water Temperature Gauge Sender for MerCruiser Stern Drives and Inboard Engines - Quicksilver 805218T Engine Coolant Temperature Gauge Sender for MerCruiser Stern Drives and Inboard Engines - GLM Thermostat Kit 160° with Plastic Sleeve for Mercruiser V6 & V8 4.3L, 5.0L, 5.7L, 7.4L,8.2L 1987-Up Replaces 18-3647 807252Q5 --- ## 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.us/products/270510586-quicksilver-engine-water-temperature-gauge-sender-806490t-for-mercruiser-stern](https://www.desertcart.us/products/270510586-quicksilver-engine-water-temperature-gauge-sender-806490t-for-mercruiser-stern) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-13*