Engine Coolant Hose Pipe for BMW OEM 17127593490

Product Overview

Ordered against OEM 2045018782 and 17127593490, this Coolant Hose replaces the original part in the coolant circuit on Mercedes-Benz vehicles. The routes coolant between the block, the expansion tank, the heater circuit and auxiliary loops, so form and fit are not negotiable. In service the part routes coolant between the block, the expansion tank, the heater circuit and auxiliary loops. When it fails it usually shows brittle sections next to hot castings and swollen bores, and the driver sees slow coolant loss, repeated top-ups between services and a sweet smell after shutdown. Hunan Woojin Autoparts supplies it from a cooling-system range of more than 4000 types covering German, French, Japanese, American and Korean vehicles.

Key Benefits

• Tooling route for obsolete references — Where the reference is out of production, we develop the mould from the sample you supply rather than turning the enquiry away.
• Checked on the features that matter — Inspection concentrates on the connector type at each end, the routing bends and whether a sensor port is moulded in — the dimensions that put a part back in the box if they are wrong.
• Built for the duty of the coolant circuit — The part routes coolant between the block, the expansion tank, the heater circuit and auxiliary loops, so the compound and the wall construction are matched to that circuit rather than to a generic hose spec.
• Aftermarket buyers, not one-off retail — Pricing and packing are set up for distributors and workshop chains buying by the carton, not for single-piece retail.

Application Scenarios

Mixed container for a distributor

A quarterly container is filled across families — intake, charge air, coolant and thermostat lines — to a single packing list. This reference, 2045018782, is bought for exactly that situation on Mercedes-Benz vehicles.

Scheduled cooling-system overhaul

The vehicle is in for a coolant leak and the workshop replaces the whole branch at once rather than chasing the next failure in a month. This reference, 2045018782, is bought for exactly that situation on Mercedes-Benz vehicles.

Warranty-expired fleet maintenance

A fleet past dealer coverage moves to independent supply and needs the same reference coverage at a working price. Here the coolant hose is ordered against 2045018782 and travels with the rest of the Mercedes-Benz branch.

Who It Is For

• Exporters and consolidators — shipping mixed cooling-system pallets into Europe, the Middle East and South America. 2045018782 earns its shelf space through repeat demand on Mercedes-Benz platforms.
• Aftermarket distributors — stocking cooling-system lines for Mercedes-Benz across a regional network and needing a reference-accurate catalogue behind the shelf. They judge 2045018782 on one thing: whether it matches the part that came off.
• Workshop and fast-fit chains — replacing coolant hoses on Mercedes-Benz daily and judging a supplier on whether the part fits first time. 2045018782 earns its shelf space through repeat demand on Mercedes-Benz platforms.

Problems It Solves

Long lead times on slow movers

A slow line ordered alone waits for a container. Consolidated with fast movers it travels on the same shipment. With 2045018782 the check is the connector type at each end, the routing bends and whether a sensor port is moulded in, and it happens before despatch.

Unclear compound

EPDM hardens once it has been heat-cycled past its service window, so a replacement that has sat in a hot warehouse for years is not a bargain. With 2045018782 the check is the connector type at each end, the routing bends and whether a sensor port is moulded in, and it happens before despatch.

Reference mismatch

Visually identical parts carry different connector geometry between model years. Quoting OEM 2045018782 and 17127593490 fixes the identity before money moves. On 2045018782 that is settled before the quotation goes out.

Technical Features

The part serves the coolant circuit and routes coolant between the block, the expansion tank, the heater circuit and auxiliary loops. It is moulded in EPDM rubber, chosen because EPDM keeps its elasticity through repeated heat cycles and resists ozone, water and weathering, which makes it the workhorse wall compound for moulded engine-bay lines.

Specified where the part has to stay flexible over thousands of heat cycles rather than hold a fixed shape. EPDM hardens once it has been heat-cycled past its service window, so a replacement that has sat in a hot warehouse for years is not a bargain.

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 2045018782 and 17127593490 against the number on the part you removed. Do not match on outline alone.

2. Check the interfaces

   Compare the connector type at each end, the routing bends and whether a sensor port is moulded in before the vehicle is stripped further.

3. Inspect on arrival

   Look for transit damage on sealing faces and connectors. EPDM hardens once it has been heat-cycled past its service window, so a replacement that has sat in a hot warehouse for years is not a bargain.

4. Fit with the original clamp style

   Reuse the clamp type the Mercedes-Benz platform was designed around, and fit any seal or O-ring supplied with 2045018782 rather than carrying the old one over.

5. Pressure check before handover

   Refill, bleed the circuit and check for weeping at quick-connect collars at working temperature before the vehicle leaves.