Overview
ISO 19013-2:2016 - Rubber hoses and tubing for fuel circuits for internal combustion engines - Part 2: Gasoline fuels - specifies requirements for rubber hoses and tubing used in gasoline fuel circuits, including fuels containing oxygenates (e.g., methanol) and oxidized (“sour”) gasoline. The standard defines product classifications, sizes, performance tests, marking and test frequencies, and can be used by OEMs as a classification/line call‑out system (see Annex G).
Key topics and technical requirements
- Product types and classes: Types 1–4 with Class A (higher pressure) and Class B (lower pressure). Examples:
- Type 1–3: pressurized feed/return lines (Class A working pressure 0.7 MPa; Class B 0.2 MPa) with specified continuous temperature ranges (up to +125 °C depending on type).
- Type 4: low‑pressure filler, vent and vapour handling (1.2 bar working pressure).
- Dimensions and tolerances: Specified inside diameters, wall thicknesses and concentricity for tubing and hoses per ISO 4671 and ISO 3302-1.
- Performance tests (selected as required for application):
- Burst and proof pressure (minimum burst pressures and proof pressures defined per type/class).
- Adhesion between bonded layers (≥ 1.5 kN/m for multilayer constructions, per ISO 8033).
- Low‑temperature flexibility (ISO 10619‑2) and ozone resistance (ISO 7326).
- Heat ageing (ISO 188) with long‑term and short‑term temperature profiles.
- Cleanliness and extractables limits (Annex A), tear resistance for tubing (Annex B).
- Resistance to surface contamination (engine oil, hydraulic fluid - Annex C), kinking, vacuum, and fuel resistance (SAE J2260 methanol fuel tests up to 5 000 h).
- OEM classification option: Annex G shows how OEMs can specify non‑standard hose/tubing by a matrix; such items may carry OEM markings rather than the ISO number.
Applications and who uses it
ISO 19013-2:2016 is intended for:
- OEM vehicle designers and fuel system engineers specifying fuel lines, return/feed lines, filler, vent and vapour handling hoses.
- Hose and tubing manufacturers designing and qualifying rubber fuel hoses for gasoline and oxygenated fuels.
- Test laboratories and quality teams performing type, routine and production acceptance tests.
- Aftermarket and replacement-part manufacturers ensuring compatibility with methanol blends and oxidized fuels.
Practical applications include fuel delivery hoses in the engine compartment, tank-to-engine feed and return lines, and low‑pressure filler/vent assemblies where fuel resistance, permeability, temperature rating and mechanical integrity are critical.
Related standards
Keywords: ISO 19013-2:2016, rubber hoses, fuel circuits, gasoline fuels, methanol, OEM fuel hose specification, fuel line testing, fuel resistance.