Step 1: Confirm the circuit position

The published product description says the low-pressure (return) hose carries oil from the steering gear back to the pump or its reservoir. Because pressure in this line is lower, it may not use compression fittings.

• Return or low-pressure line: Low Pressure Power Steering Oil Hose SAE J189 is the applicable product.
• Pressure line from the pump to the steering gear: The SAE J189 hose does not apply. Look at the High Pressure Power Steering Hose (SAE J188 / MS263-53) instead.

Buyers searching for a "pressure hose for power steering" or a "power steering pressure line hose" should check this point before comparing quotes. Low-pressure and high-pressure hoses are not interchangeable on the published data.

Step 2: Check the medium and construction

Published construction of the SAE J189 low-pressure hose:

The hose is described for carrying power steering oil in the low-pressure pipeline. If your application uses a different fluid, confirm compatibility with the supplier before ordering.

Step 3: Match the dimensions

The published size list for the SAE J189 low-pressure hose shows one specification:

If your vehicle or assembly needs a different bore or outside diameter, this published size does not cover it. Ask the supplier to confirm in writing whether another size can be supplied before you treat it as an option. Concentricity appears in the published table, but no value is given, so request it if your drawing specifies one.

Step 4: Verify the operating conditions

These are low burst-pressure values that fit a return line. If the line in your system will see pressures or temperatures outside these published ranges, the SAE J189 hose is not the right choice.

When the high-pressure hose applies instead

For the pressure side of the circuit, the published data for the High Pressure Power Steering Hose shows:

• Standard: SAE J188 / MS263-53
• Working temperature: -40 ℃ to +150 ℃ (-40 °F to 302 °F)
• Max burst pressure: 65 to 85 MPa (9,400 to 12,300 psi) across the listed sizes
• Listed sizes: 6.3 × 14.5, 8.0 × 18.0, 9.5 × 18.5, 9.5 × 20.0, 9.8 × 18.5, 9.8 × 19.8, 10.0 × 20.0 and 13.0 × 23.0 mm (I.D. × O.D.)
• Certificate listed on that product page: ISO/TS 16949:2009

That certificate applies to the high-pressure product only.

Side-by-side selection criteria

Making cost quotes comparable

Since power steering pressure hose cost cannot be judged without a defined part, include these points in every request for quotation:

1. Circuit position (return line or pressure line) and the applicable standard (SAE J189 or SAE J188).
2. Required I.D. and O.D. with tolerances, plus concentricity if your drawing specifies it.
3. Surface finish: smooth or cloth-wrapped.
4. Operating temperature and pressure in your system, checked against the published ranges.
5. Whether you need bulk hose or a fitted assembly, and any fitting requirements.
6. Any certification or test documents you need. Only request ones the supplier can confirm.

With these points fixed, quotations refer to the same product and can be compared fairly. Contact HEBEI KEMO AUTO PARTS TECHNOLOGY CO., LTD with your specification to get a quotation.