Radiator Coolant Hose for BMW OEM 17127519255

Product Overview

A Radiator Hose for BMW vehicles, held against OEM WJ-H0098 and 17127519255. In service the part carries coolant between the engine outlet and the radiator on the upper and lower legs of the loop. This part carries coolant between the engine outlet and the radiator on the upper and lower legs of the loop. The failure modes that bring it across a parts counter are collapse of the lower leg at high rpm and chafing where the hose crosses the fan shroud, reported as overheating on long runs, pressure loss in the expansion tank and visible coolant traces. It sits inside a cooling-system programme of more than 4000 types, so the same order can carry the neighbouring hoses, flanges and thermostat housings for the platform.

Key Benefits

• Checked on the features that matter — Inspection concentrates on the overall developed length, the bend sequence and the branch positions — the dimensions that put a part back in the box if they are wrong.
• Built for the duty of the main cooling loop — The part carries coolant between the engine outlet and the radiator on the upper and lower legs of the loop, so the compound and the wall construction are matched to that circuit rather than to a generic hose spec.
• Export packing as standard — The range ships to Europe, the Middle East and South America, so cartons are packed for long sea legs rather than for a local van run.
• Ordered by reference not by photo — The listing carries OEM WJ-H0098 and 17127519255. You quote the number, we confirm against the same number, and the part that ships is the one on the invoice.

Application Scenarios

Counter stock for a busy platform

BMW volume in the region justifies holding the line on the shelf instead of ordering it in per job. Here the radiator hose is ordered against WJ-H0098 and travels with the rest of the BMW branch.

Breakdown repair

The vehicle is off the road and the part has to be right the first time, which makes the reference match the whole decision. With WJ-H0098 on the list the rest of the main cooling loop can be priced at the same time.

Rebuild of an obsolete platform

The original reference is no longer produced, so the part is made from a supplied sample. With WJ-H0098 on the list the rest of the main cooling loop can be priced at the same time.

Who It Is For

• Online parts sellers — listing by OEM reference, where a mismatched number turns into a return and a negative rating. WJ-H0098 earns its shelf space through repeat demand on BMW platforms.
• Fleet and bus operators — running BMW vehicles past warranty and buying cooling-system parts by the box to keep downtime short. What they need from WJ-H0098 is that it fits the BMW on the ramp today.
• Radiator and cooling specialists — rebuilding cooling systems and sourcing the hoses, flanges and housings for a platform in one go. They order WJ-H0098 by the carton and reorder against the same number.

Problems It Solves

Reference mismatch

Visually identical parts carry different connector geometry between model years. Quoting OEM WJ-H0098 and 17127519255 fixes the identity before money moves. On WJ-H0098 that is settled before the quotation goes out.

Split ordering

Sourcing one hose from one supplier and the matching flange from another doubles the freight and the paperwork for the same repair. For BMW buyers it is the difference between a stocked line and a credit note on WJ-H0098.

Parts that are no longer produced

When the original reference is dropped, the repair still exists. Sample-based production and mould development keep the line alive. That is why WJ-H0098 carries its full cross-reference set on this page.

Technical Features

The part serves the main cooling loop and carries coolant between the engine outlet and the radiator on the upper and lower legs of the loop. It is moulded in PA66 glass-filled nylon, chosen because glass-filled PA66 gives a rigid pipe that holds its shape against vibration and keeps clamp faces dimensionally stable at under-bonnet temperature.

Used where the part must hold a fixed geometry and carry bolted or clipped interfaces. PA66 mouldings crack rather than weep, so a hairline split can empty a coolant system quickly once it opens.

Specifications

Values marked TBC are not stated on the source catalogue. They are confirmed in writing on the quotation rather than estimated here.

Comparison With the Alternatives

Use Guide

1. Confirm the reference

   Match OEM WJ-H0098 and 17127519255 against the number on the part you removed. Do not match on outline alone.

2. Check the interfaces

   Compare the overall developed length, the bend sequence and the branch positions before the vehicle is stripped further.

3. Inspect on arrival

   Look for transit damage on sealing faces and connectors. PA66 mouldings crack rather than weep, so a hairline split can empty a coolant system quickly once it opens.

4. Fit with the original clamp style

   Reuse the clamp type the BMW platform was designed around, and fit any seal or O-ring supplied with WJ-H0098 rather than carrying the old one over.

5. Pressure check before handover

   Refill, bleed the circuit and check for ballooning under pressure at working temperature before the vehicle leaves.