Brake Hose Assembly SAE J1402 3/8 Inch ID Bus Commercial Vehicle JUNZE
Let me walk you through what goes into this SAE J1401 brake hose. The core is an EPDM compound we've refined over 18 years, reinforced with two layers of synthetic braid — not one. After 80,000 thermal cycles, single-layer hoses show expansion creep. Dual-layer doesn't. That's not a claim — that's a test result.
One thing to watch: Not compatible with DOT5 silicone fluid — EPDM swells. For vehicles with electronic brake boost above 15MPa, use our stainless braided version instead.
Snap a photo of your old hose — we'll match it in 4 hours.
Product Details
Product Information
The 3.2mm ID is standard for most passenger cars from 2010 onward. But here's the thing: "standard" doesn't mean every hose performs the same. The difference is in braid tension control during manufacturing. We monitor it in real time. That's it. Simple.
Operating temperature is -40°C to +100°C. Sounds like marketing speak, right? We verified it — 500 hours in a thermal chamber at 100°C, surface hardness changed by less than 3 Shore A points. The SAE standard allows 10.
Burst pressure averages 38.2MPa across production — a 9% safety margin above the 35MPa minimum. Period.
Compatible with DOT3/DOT4. Send us your VIN or OE number. We've got 8,400+ vehicle models in our cross-reference database.