--- product_id: 452459818 title: "Qiilu Professional Knock Sensor for Mazda 3 BK 1.4 1.6 2.0 2.3 2003 2004 2005 2006 2007 2008 2009, Car Auto Sensor ZJ01-18-921" brand: "qiilu" price: "Rp2065718" currency: IDR in_stock: true reviews_count: 5 category: "Qiilu" url: https://www.desertcart.id/products/452459818-qiilu-professional-knock-sensor-for-mazda-3-bk-1-4 store_origin: ID region: Indonesia --- # Enhances engine response & performance High-temp resistant up to 1562℉ Direct OEM fit, plug & play Qiilu Professional Knock Sensor for Mazda 3 BK 1.4 1.6 2.0 2.3 2003 2004 2005 2006 2007 2008 2009, Car Auto Sensor ZJ01-18-921 **Brand:** qiilu **Price:** Rp2065718 **Availability:** βœ… In Stock ## Summary > πŸ”₯ Knock out engine issues with precision power! ## Quick Answers - **What is this?** Qiilu Professional Knock Sensor for Mazda 3 BK 1.4 1.6 2.0 2.3 2003 2004 2005 2006 2007 2008 2009, Car Auto Sensor ZJ01-18-921 by qiilu - **How much does it cost?** Rp2065718 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/452459818-qiilu-professional-knock-sensor-for-mazda-3-bk-1-4) ## Best For - qiilu enthusiasts ## Why This Product - Trusted qiilu brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Endure:** Crafted from SUS310, it withstands extreme heat up to 1562℉ without fail. - β€’ **Boost Your Drive:** Improves engine response, unlocking your car’s true potential. - β€’ **Worry-Free Support:** Backed by 24-hour customer service and a 30-day refund policy. - β€’ **Precision Engine Tuning:** Pretested sensor ensures optimal knock detection for smoother rides. - β€’ **Seamless OEM Replacement:** Exact fit for Mazda 3 BK models (2003-2009), no modifications needed. ## Overview The Qiilu Professional Knock Sensor (ZJ01-18-921) is a high-quality, direct replacement sensor designed specifically for Mazda 3 BK models from 2003 to 2009. Made from heat-resistant SUS310 material and tested at 1562℉, it ensures durability under extreme conditions. This plug-and-play sensor enhances engine performance by accurately detecting knock, backed by reliable customer support and a 30-day refund guarantee. ## Description Specification:Material: HoseOEM: ZJ01-18-921Total Length: 46.5cm / 18.3inPackage Weight: Approx. 78g / 2.8ozFitment:for Mazda3 BK 1.4 2003/10-2009/06 1349 ccm, 62 KW, 84 PS3 BK 1.6 2003/10-2009/06 1598 ccm, 77 KW, 105 PS3 BK 2.0 2003/10-2009/06 1999 ccm, 110 KW, 150 PS3 BK 2.0 MZR-CD 2006/12-2009/06 1998 ccm, 105 KW, 143 PS3 BK 2.3 MPS 2006/12-2009/06 2261 ccm, 191 KW, 260 PS3 Stufenheck BK 2.0 MZR-CD 2006/12-2009/06 1998 ccm, 105 KW, 143 PSPackage Included:1 * Knock SensorNote:This is aftermarket replacement item but not genuine.Our brand:Qiilu is a professional seller producing premium Automotive Accessories,all items come with strict quality control.We strive to make every shopping experience pleasant and stress-free.Our main goal is not to make a sale, it is to make a customer!A customer who feels valued and satisfied with each and every item purchased,and is confident that we will continue to service them for years to come.Product Warranty:At Qiilu, we believe in our products. We provide friendly and easy-to-reach support. ## Features - FITMENT. Fit for Mazda 2003 2004 2005 2006 2007 2008 2009, 3 BK 1.4 1.6 2.0 2.3. - HIGH TEMPERATURE RESISTANT. Made of high temperature resistant materials SUS310, every single item is heated at 1562℉, ensure it stands wear and tear. - ORIGINAL STANDARD. Manufacturer part number for reference: ZJ01-18-921. Direct replacement for the original one, plug and play. - FUNCTION. Pretested and precise sensor, high quality enough, it can improve engine response and performance. - GUARANTEE. We provide our worry-free 24-Hour reply, 30-Day Refund and consistently friendly customer service. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08CDC5VQ6 | | Brand | Qiilu | | Brand Name | Qiilu | | Country of Origin | USA | | Customer Reviews | 4.2 out of 5 stars 23 Reviews | | Item Dimensions | 30 x 30 x 30 Millimeters | | Item dimensions L x W x H | 30 x 30 x 30 Millimeters | | Manufacturer | Qiilu | | Material | Polystyrene | | Material Type | Polystyrene | | Maximum Supply Voltage | 5 Volts (DC) | | Measuring Range | 100 - 140 dB | | Model Number | ZJ01-18-921 | | Mounting Type | Car Mount,Plug Mount | | Output Type | electrical signal | | Part Number | AC130007 | | Specific Uses For Product | automotive, electronic ignition systems | | Style | Durable | | Style Name | Durable | | Upper Temperature Rating | 392 Degrees Fahrenheit | ## Product Details - **Brand:** Qiilu - **Item dimensions L x W x H:** 30 x 30 x 30 Millimeters - **Material:** Polystyrene - **Maximum Supply Voltage:** 5 Volts (DC) - **Style:** Durable ## Images ![Qiilu Professional Knock Sensor for Mazda 3 BK 1.4 1.6 2.0 2.3 2003 2004 2005 2006 2007 2008 2009, Car Auto Sensor ZJ01-18-921 - Image 1](https://m.media-amazon.com/images/I/51vajgx38qL.jpg) ![Qiilu Professional Knock Sensor for Mazda 3 BK 1.4 1.6 2.0 2.3 2003 2004 2005 2006 2007 2008 2009, Car Auto Sensor ZJ01-18-921 - Image 2](https://m.media-amazon.com/images/I/61keNq3QrSL.jpg) ![Qiilu Professional Knock Sensor for Mazda 3 BK 1.4 1.6 2.0 2.3 2003 2004 2005 2006 2007 2008 2009, Car Auto Sensor ZJ01-18-921 - Image 3](https://m.media-amazon.com/images/I/61thnur2WaL.jpg) ![Qiilu Professional Knock Sensor for Mazda 3 BK 1.4 1.6 2.0 2.3 2003 2004 2005 2006 2007 2008 2009, Car Auto Sensor ZJ01-18-921 - Image 4](https://m.media-amazon.com/images/I/51jSYN1ZYdL.jpg) ![Qiilu Professional Knock Sensor for Mazda 3 BK 1.4 1.6 2.0 2.3 2003 2004 2005 2006 2007 2008 2009, Car Auto Sensor ZJ01-18-921 - Image 5](https://m.media-amazon.com/images/I/51xNfYo-keL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by R***Z on 16 July 2025* ### ⭐ Review *by F***Z on 25 June 2025* ### ⭐⭐⭐⭐⭐ Review *by J***V on 20 July 2023* ## Frequently Bought Together - Knock Sensor, Car Auto Sensor ZJ01-18-92 Replacement for Mazda 3 BK 1.4 1.6 2.0 2.3 2003 2004 2005 2006 2007 2008 2009, Professional Knock Sensor - FEL-PRO 61070 Fuel Injection Throttle Body Mounting Gasket for Chevrolet Silverado 1500 - Dual Knock Sensors with Wiring Harness Kit | Knock Sensor 5.3 for Chevy Suburban Silverado Avalanche Tahoe, GMC Sierra Yukon, Cadillac Hummer & More GM Vehicles | Replace# 12601822 12589867 917-033 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.id/products/452459818-qiilu-professional-knock-sensor-for-mazda-3-bk-1-4](https://www.desertcart.id/products/452459818-qiilu-professional-knock-sensor-for-mazda-3-bk-1-4) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-05-11*