Hydraulic Brake Hose Assembly 4.8mm ID SUV MPV Heavy Duty SAE J1401 JUNZE
The thing about this one is — most people don't realize a standard 3.2mm brake hose on a full-size SUV is working harder than it should. Larger calipers need more fluid volume. Longer circuits mean more pressure drop. This 4.8mm ID hose increases flow capacity by about 125% over 3.2mm. That's cross-sectional area math, not a guess.
We use dual-layer braid because the larger diameter sees higher total hydraulic force. Burst tested at 32MPa minimum, working pressure 7MPa.
Actually, let me back up. We're seeing growing demand from MPV manufacturers in Southeast Asia and India, where 7-seaters carrying 8 passengers plus cargo need that extra safety margin.
Product Details
Product Information
The 4.8mm ID brake hose is one of the most overlooked products in the brake category. SUVs and MPVs now account for over 45% of new vehicle sales in many markets — that's a lot of vehicles running on hoses designed for sedans.
The dual-layer braid isn't just about burst pressure. At 7MPa working pressure, we measured 2.1% volumetric expansion. A competitor's single-layer 4.8mm hose showed 3.8% at the same pressure. That extra 1.7% expansion translates directly to pedal travel. Full stop.
Fittings are yellow or olive green zinc, 72-hour salt spray per ASTM B117. If your market is coastal, upgrade to stainless fittings — zero corrosion risk over full service life.
Temperature range -40°C to +100°C. SAE J1401 and GB16897 compliant.
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