Coolant Water Flange Pipe for Mercedes-Benz OEM A6422001156

Product Overview

Coolant Water Flange Pipe for Mercedes-Benz OEM A6422001156 covers the coolant distribution point on Mercedes-Benz applications. The reference set on file is OEM A6422001156, which is the figure to quote when you send an enquiry. In service the part joins several coolant lines at the cylinder head and usually carries the temperature sensor and its seals. When it fails it usually shows stripped sensor threads and leaking O-ring grooves, and the driver sees a coolant drip at the head, low coolant warnings and an intermittent temperature signal. 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

• 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 port count, the bolt pattern and whether the sensor and seals are included — the dimensions that put a part back in the box if they are wrong.
• Matched to how the part actually fails — Stripped sensor threads and leaking O-ring grooves are the reasons this reference is bought, so those are the features checked before packing.
• 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.

Application Scenarios

Warranty-expired fleet maintenance

A fleet past dealer coverage moves to independent supply and needs the same reference coverage at a working price. For A6422001156 the practical step is confirming the port count, the bolt pattern and whether the sensor and seals are included before the order is placed.

Counter stock for a busy platform

Mercedes-Benz volume in the region justifies holding the line on the shelf instead of ordering it in per job. On this reference that means quoting A6422001156 with the quantity and letting the packing follow.

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 A6422001156 on the list the rest of the coolant distribution point can be priced at the same time.

Who It Is For

• Fleet and bus operators — running Mercedes-Benz vehicles past warranty and buying cooling-system parts by the box to keep downtime short. For them A6422001156 is a line on a shelf, not a project.
• Radiator and cooling specialists — rebuilding cooling systems and sourcing the hoses, flanges and housings for a platform in one go. They judge A6422001156 on one thing: whether it matches the part that came off.
• Exporters and consolidators — shipping mixed cooling-system pallets into Europe, the Middle East and South America. What they need from A6422001156 is that it fits the Mercedes-Benz on the ramp today.

Problems It Solves

Reference mismatch

Visually identical parts carry different connector geometry between model years. Quoting OEM A6422001156 fixes the identity before money moves. On A6422001156 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. With A6422001156 the check is the port count, the bolt pattern and whether the sensor and seals are included, and it happens before despatch.

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. For Mercedes-Benz buyers it is the difference between a stocked line and a credit note on A6422001156.

Technical Features

The part serves the coolant distribution point and joins several coolant lines at the cylinder head and usually carries the temperature sensor and its seals. 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 A6422001156 against the number on the part you removed. Do not match on outline alone.

2. Check the interfaces

   Compare the port count, the bolt pattern and whether the sensor and seals are included 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 Mercedes-Benz platform was designed around, and fit any seal or O-ring supplied with A6422001156 rather than carrying the old one over.

5. Pressure check before handover

   Refill, bleed the circuit and check for hairline cracks in the moulding at working temperature before the vehicle leaves.