--- product_id: 105897570 title: "Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag" brand: "4lifetimelines" price: "23934CFA" currency: XOF in_stock: true reviews_count: 11 category: "4 Lifetimelines" url: https://www.desertcart.sn/products/105897570-brass-brake-line-union-3-16-m10x1-0-inverted-10 store_origin: SN region: Senegal --- # Multi-material compatible 3/16 in (4.75 mm) precision fit Corrosion-resistant brass Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag **Brand:** 4lifetimelines **Price:** 23934CFA **Availability:** ✅ In Stock ## Summary > 🚗 Brake with Confidence, Connect for Life! ## Quick Answers - **What is this?** Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag by 4lifetimelines - **How much does it cost?** 23934CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/105897570-brass-brake-line-union-3-16-m10x1-0-inverted-10) ## Best For - 4lifetimelines enthusiasts ## Why This Product - Trusted 4lifetimelines brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lifetime Peace of Mind:** Backed by 4LifetimeLines’ lifetime warranty, so you can trust your brake repairs will last as long as you need. - • **Universal Compatibility:** Works flawlessly with steel, copper-nickel, copper-coated steel, PVF-coated, and stainless brake lines—one union to rule them all. - • **Built to Brave the Elements:** Durable brass construction resists rust and corrosion from harsh winter road salts, extending service life beyond steel unions. - • **Hydraulic-Ready Reliability:** Purpose-built for hydraulic brake lines, guaranteeing secure, leak-free connections under pressure. - • **Precision Fit for Every Repair:** 3/16 in line size with M10×1.0 inverted-flare threads ensures seamless compatibility with most import and domestic vehicles. ## Overview The 4LIFETIMELINES Brass Brake Line Union (3/16 in, M10x1.0 inverted flare) is a premium, corrosion-resistant brass fitting designed for reliable hydraulic brake line repairs. Compatible with a wide range of brake line materials, it offers durable, rust-proof performance backed by a lifetime warranty, making it the go-to choice for professional-grade brake maintenance. ## Description Experience superior quality with these 3/16 (M10x1.0 Inverted) brass brake line unions, designed for reliable brake hydraulic line applications. Crafted from durable brass material, these unions offer excellent resistance to road salt corrosion, making them ideal for winter conditions. The versatile unions are fully compatible with multiple types of replacement lines, including steel, copper nickel, copper coated steel, PVF-coated, and stainless steel. Each package contains 10 unions, providing you with a reliable solution for your brake line connection needs. Review: N/A - Perfect. Worked like it was supposed to. Review: Great - Great quality brake line connectors ## Features - Correct fit for common brake repairs – 3/16 in (4.75 mm) line size with M10×1.0 inverted-flare threads, the spec used on many import and domestic vehicles. - Durable, corrosion-resistant brass – resists rust from winter road salt for long service life vs. plain steel unions. - Hydraulic-brake ready – purpose-built union for joining hard brake lines in maintenance and repair. - Multi-material compatible – works with steel, copper-nickel, copper-coated steel, PVF-coated, and stainless replacement lines. - Backed for life – supported by 4LifetimeLines’ lifetime warranty for peace of mind in the bay or garage. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07BN2W68Q | | Best Sellers Rank | #41,019 in Automotive ( See Top 100 in Automotive ) #32 in Automotive Replacement Brake Fittings | | Brand Name | 4LIFETIMELINES | | Color | Brass | | Connector Type | Union | | Customer Reviews | 4.7 4.7 out of 5 stars (285) | | Exterior Finish | Brass | | Item Dimensions | 7 x 4 x 0.5 inches | | Item Weight | 0.16 Kilograms | | Manufacturer | 4LifetimeLines | | Material Type | Brass | | Model Number | LTBU9 | | Number of Pieces | 10 | | Size | 50 Pack | | Thread Size | M10 | | Thread Type | Metric | | UPC | 811701030575 | ## Product Details - **Brand:** 4LIFETIMELINES - **Color:** Brass - **Connector Type:** Union - **Exterior Finish:** Brass - **Item Weight:** 0.16 Kilograms - **Item dimensions L x W x H:** 7 x 4 x 0.5 inches - **Material:** Brass - **Size:** 50 Pack - **Thread Size:** M10 - **Thread Type:** Metric ## Images ![Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag - Image 1](https://m.media-amazon.com/images/I/61DiwonWnJL.jpg) ## Questions & Answers **Q: Will I be able to use this union for shortening a long line into two sections, 2002 Miata** A: As long as you're comfortable cutting and flaring lines, you should be able to use this to join any lines using m10x1.0 fittings. **Q: Are these fine thread or extra fine?** A: Metric. **Q: I need coupling for m10 x 1.0. what does "m10 x 1.0 inverted" mean?** A: Inverted "flared 16mm tube" **Q: Is it OK to use stainless fittings with this?** A: Yes! You can absolutely use Stainless Steel fittings with this union. And heads up, we are launching our Stainless Steel fittings program within the next month and will have a complete offering of fittings, union, and adapters in Stainless Steel. ## Customer Reviews ### ⭐⭐⭐⭐⭐ N/A *by K***R on May 23, 2025* Perfect. Worked like it was supposed to. ### ⭐⭐⭐⭐⭐ Great *by J***S on September 13, 2025* Great quality brake line connectors ### ⭐⭐⭐⭐⭐ Great threads! Exact fit, no wiggle finally! Great product. *by H***N on May 18, 2023* I've been trying to find the exact 3/16 thread for a while now and finally have found it with these! Some say it's 3/16 thread, but wiggles a lot loosely. Some say pipe thread and others say compression. Make sure you get the right one. Great 10 pack for the price is spot on and quality is nice. I tightened down the threads very hard and no stripping occurred. --- ## 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.sn/products/105897570-brass-brake-line-union-3-16-m10x1-0-inverted-10](https://www.desertcart.sn/products/105897570-brass-brake-line-union-3-16-m10x1-0-inverted-10) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-08-11*