{"product_id":"empi-brass-brake-line-plugs-m10-x-1-0-bubble-flare-pair-vw-buggy-18-1103-0","title":"EMPI Brass Brake Line Plugs, M10 x 1.0 Bubble Flare, Pair | VW Dune Buggy, Sand Rail \u0026 Master Cylinder (18-1103-0)","description":"\u003cp\u003e\u003cstrong\u003eSeal off an unused brake port the right way.\u003c\/strong\u003e The EMPI Brake Line Plugs (part 18-1103-0) are solid brass, male-threaded M10 x 1.0 plugs with a bubble flare (ISO flare) seat. They thread into any unused M10 x 1.0 brake port and seal on the same seat a brake line would. The usual job is a spare port on the master cylinder of a dune buggy, sand rail or Baja Bug after the brake plumbing has been simplified. They also cap a spare outlet on a brake tee or junction block. Sold as a pair.\u003c\/p\u003e\n\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003eThese plugs fit by thread and seat type, not by vehicle. They fit any port that takes an \u003cstrong\u003eM10 x 1.0 bubble flare\u003c\/strong\u003e brake line, which is the standard thread on air-cooled VW brake systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDune buggies, sand rails and Baja Bugs\u003c\/strong\u003e built on VW running gear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVW Beetle, Super Beetle, Karmann Ghia, Type 2 Bus, Type 3 and Thing\u003c\/strong\u003e master cylinders, brake tees and junction blocks with M10 x 1.0 ports\u003c\/li\u003e\n\u003cli\u003eOff-road and custom builds using an M10 x 1.0 master cylinder, such as the EMPI buggy master cylinders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCheck before you order:\u003c\/strong\u003e this plug will not seal an SAE inverted-flare port (3\/8\"-24 or 7\/16\"-24 threads, used on many American master cylinders) or a larger M12 x 1.0 port. If you're not sure what your port is, send us a photo and we'll confirm it.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM10 x 1.0 male thread\u003c\/strong\u003e matches the standard air-cooled VW brake port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBubble flare seat\u003c\/strong\u003e seals metal to metal on the port's seat, just like a flared brake line fitting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass construction\u003c\/strong\u003e won't rust and won't gall the port threads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as a pair\u003c\/strong\u003e, which covers both spare outlets on a typical buggy master cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade by EMPI\u003c\/strong\u003e, the long-standing name in VW off-road and performance parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cp\u003eTwo (2) M10 x 1.0 bubble flare brake line plugs. No other hardware is included or needed.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the port's threads and seat before fitting. Grit on the seat is the most common cause of a weep.\u003c\/li\u003e\n\u003cli\u003eThread the plug in by hand first to make sure it isn't cross-threaded, then snug it with a flare-nut (line) wrench. Don't over-tighten; brass is softer than steel.\u003c\/li\u003e\n\u003cli\u003eDon't use thread sealant or PTFE tape. The flare seat does the sealing, and tape can end up in the brake fluid.\u003c\/li\u003e\n\u003cli\u003eBleed the brakes after any change to the hydraulic system, then pressure-test with a firm pedal and check the plug for leaks before driving.\u003c\/li\u003e\n\u003cli\u003ePlugging a port changes how your brake circuit works. Make sure the circuits that are left still brake the wheels you need them to.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEMPI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18-1103-0 (also listed as 18-1103)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e707924467796\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM10 x 1.0 male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeat type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBubble flare (ISO \/ DIN)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSold as\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePair (2 plugs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5 x 1 x 0.75 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew, aftermarket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat are brake line plugs used for?\u003c\/h3\u003e\n\u003cp\u003eThey seal a brake port you're no longer using. On a dune buggy or sand rail, that's usually a spare outlet on the master cylinder. They also cap an unused outlet on a brake tee or junction block.\u003c\/p\u003e\n\u003ch3\u003eWhat thread size are these plugs?\u003c\/h3\u003e\n\u003cp\u003eM10 x 1.0 metric, with a bubble flare seat. That's the standard brake port thread on air-cooled Volkswagens.\u003c\/p\u003e\n\u003ch3\u003eWill they fit an American master cylinder?\u003c\/h3\u003e\n\u003cp\u003eOnly if its ports are M10 x 1.0 bubble flare. Most American master cylinders use SAE inverted-flare ports (3\/8\"-24 or 7\/16\"-24), and these plugs won't seal those.\u003c\/p\u003e\n\u003ch3\u003eDo I need thread tape or sealant?\u003c\/h3\u003e\n\u003cp\u003eNo. The bubble flare seat makes a metal-to-metal seal. Tape or sealant can contaminate the brake fluid.\u003c\/p\u003e\n\u003ch3\u003eHow many plugs come in the package?\u003c\/h3\u003e\n\u003cp\u003eTwo. They're sold as a pair.\u003c\/p\u003e\n\u003ch3\u003eWhat are they made of?\u003c\/h3\u003e\n\u003cp\u003eBrass, which won't rust and is gentle on the port threads.\u003c\/p\u003e\n\u003ch3\u003eDo I need to bleed the brakes after installing them?\u003c\/h3\u003e\n\u003cp\u003eYes. Bleed the system after any change to the brake plumbing, then check for leaks with a firm pedal before driving.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What are brake line plugs used for?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"They seal a brake port you're no longer using, usually a spare outlet on a dune buggy or sand rail master cylinder, or an unused outlet on a brake tee or junction block.\"}},{\"@type\":\"Question\",\"name\":\"What thread size are these plugs?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"M10 x 1.0 metric with a bubble flare seat, the standard brake port thread on air-cooled Volkswagens.\"}},{\"@type\":\"Question\",\"name\":\"Will they fit an American master cylinder?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Only if its ports are M10 x 1.0 bubble flare. Most American master cylinders use SAE inverted-flare ports (3\/8-24 or 7\/16-24), and these plugs won't seal those.\"}},{\"@type\":\"Question\",\"name\":\"Do I need thread tape or sealant?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. The bubble flare seat makes a metal-to-metal seal. Tape or sealant can contaminate the brake fluid.\"}},{\"@type\":\"Question\",\"name\":\"How many plugs come in the package?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Two. They're sold as a pair.\"}}]}\u003c\/script\u003e\n","brand":"EMPI","offers":[{"title":"Default Title","offer_id":50531918774387,"sku":"18-1103-0","price":11.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/18-1103-0.jpg?v=1790364071","url":"https:\/\/www.washburnsmetal.com\/products\/empi-brass-brake-line-plugs-m10-x-1-0-bubble-flare-pair-vw-buggy-18-1103-0","provider":"Washburn's Metal","version":"1.0","type":"link"}