--- product_id: 51793254 title: "IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios" brand: "isimple" price: "$5.32" currency: USD in_stock: false reviews_count: 10 url: https://www.desertcart.us/products/51793254-is31-antenna-bypass-fm-modulator-for-factory-or-aftermarket-car store_origin: US region: United States of America --- # Clear audio quality Universal aux input Easy switch operation IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios **Brand:** isimple **Price:** $5.32 **Availability:** ❌ Out of Stock ## Summary > 🎵 Drive Your Sound Experience! ## Quick Answers - **What is this?** IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios by isimple - **How much does it cost?** $5.32 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/51793254-is31-antenna-bypass-fm-modulator-for-factory-or-aftermarket-car) ## Best For - isimple enthusiasts ## Why This Product - Trusted isimple brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Connectivity:** Easily connect any portable device to your car radio. - • **Enhanced Sound Quality:** Enjoy crystal-clear audio without interference. - • **Sleek & Compact Design:** Fits perfectly in any car setup without clutter. - • **Versatile Compatibility:** Works with both factory and aftermarket car radios. - • **Effortless Audio Experience:** Simply flip the switch for instant audio enjoyment. ## Overview The iSimple IS31 Antenna Bypass FM Modulator allows you to connect any portable audio device to your car radio effortlessly. With its universal aux input and sleek design, it ensures a clean and clear audio experience, making it compatible with both factory and aftermarket radios. ## Description Antenna Bypass FM Modulator Review: Brilliant little device - Brilliant little device. No external noise from antenna input and it is very very easy to install. Hardest part of the install was to route the wires through the car! Gain adjustment on the unit is very handy and works well. I bought the isimple auxiliary connection kit for this as the finish on the auxiliary input was very clean and looked professionally done in a few seconds. Would recommend highly. Review: Perfect for Jaguar X Type! - My Dad has a Jaguar X Type, it has Bluetooth for Phone Calls but not for Audio, there is also no 3.5MM Aux Port either. He's been using a Bluetooth FM Transmitter for the past few months but the signal goes crackly quite frequently so he bought this, took an afternoon to fit and works perfectly. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002U5XPBE | | Best Sellers Rank | #489,037 in Electronics ( See Top 100 in Electronics ) #170 in RF Modulators | | Customer Reviews | 4.2 4.2 out of 5 stars (911) | | Date First Available | May 15, 2009 | | Height (inches) | 5.5 inches | | Is Discontinued By Manufacturer | No | | Item Weight | 8.8 ounces | | Item model number | IS31 | | Product Dimensions | 2 x 5.5 x 6 inches | | Warranty | One year | | Weight | 17.01 g | ## Images ![IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios - Image 1](https://m.media-amazon.com/images/I/71aShNuzgEL.jpg) ![IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios - Image 2](https://m.media-amazon.com/images/I/61gw8K6k3KL.jpg) ![IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios - Image 3](https://m.media-amazon.com/images/I/71y6DEsieTL.jpg) ![IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios - Image 4](https://m.media-amazon.com/images/I/61NAljvSPQL.jpg) ![IS31 Antenna Bypass FM Modulator for Factory or Aftermarket Car Radios - Image 5](https://m.media-amazon.com/images/I/61J+DNt0aAL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Brilliant little device *by A***R on 26 June 2017* Brilliant little device. No external noise from antenna input and it is very very easy to install. Hardest part of the install was to route the wires through the car! Gain adjustment on the unit is very handy and works well. I bought the isimple auxiliary connection kit for this as the finish on the auxiliary input was very clean and looked professionally done in a few seconds. Would recommend highly. ### ⭐⭐⭐⭐⭐ Perfect for Jaguar X Type! *by A***R on 7 December 2018* My Dad has a Jaguar X Type, it has Bluetooth for Phone Calls but not for Audio, there is also no 3.5MM Aux Port either. He's been using a Bluetooth FM Transmitter for the past few months but the signal goes crackly quite frequently so he bought this, took an afternoon to fit and works perfectly. ### ⭐⭐⭐⭐⭐ Sounds great! *by W***R on 30 December 2018* First one I had was faulty but the return was fast and after that it worked perfectly on my brother's car. Sounds great! --- ## 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/51793254-is31-antenna-bypass-fm-modulator-for-factory-or-aftermarket-car](https://www.desertcart.us/products/51793254-is31-antenna-bypass-fm-modulator-for-factory-or-aftermarket-car) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-05*