Air Intake Hose Pipe for Mercedes-Benz OEM 2720903682 (WJ-H1139)

Product Overview

A Air Intake Hose for Mercedes-Benz vehicles, held against OEM 2720903682 and 2720901282. In service the part carries filtered air from the airbox to the turbocharger inlet or throttle body. The air intake tract gives this part a hard life: heat soak, vibration and pressure cycling. Typical end-of-life signs are hardened cuffs that no longer seal on the airbox spigot and splits along the convolutions, which reach the workshop as unmetered air downstream of the mass airflow sensor, a rough idle and airflow fault codes. 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

• Built for the duty of the air intake tract — The part carries filtered air from the airbox to the turbocharger inlet or throttle body, 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.
• One reference set on every document — OEM 2720903682 and 2720901282 appears on the quotation, the packing list and the carton label, so a warehouse can check a delivery without opening the box.
• Consolidate the platform in one order — Hoses, flanges and thermostat housings for the same platform ship on one pallet, which shortens the paperwork and the freight bill.

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. This reference, 2720903682, is bought for exactly that situation on Mercedes-Benz vehicles.

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 2720903682 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. On this reference that means quoting 2720903682 with the quantity and letting the packing follow.

Who It Is For

• Workshop and fast-fit chains — replacing air intake hoses on Mercedes-Benz daily and judging a supplier on whether the part fits first time. They judge 2720903682 on one thing: whether it matches the part that came off.
• Online parts sellers — listing by OEM reference, where a mismatched number turns into a return and a negative rating. What they need from 2720903682 is that it fits the Mercedes-Benz on the ramp today.
• Fleet and bus operators — running Mercedes-Benz vehicles past warranty and buying cooling-system parts by the box to keep downtime short. What they need from 2720903682 is that it fits the Mercedes-Benz on the ramp today.

Problems It Solves

Split ordering

Sourcing one hose from one supplier and the matching flange from another doubles the freight and the paperwork for the same repair. On 2720903682 that is settled before the quotation goes out.

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 2720903682 carries its full cross-reference set on this page.

Returns from wrong fitment

Every returned part costs the freight twice. Checking the bellows pitch, the connector geometry and the sensor port position before despatch is cheaper than a credit note. With 2720903682 the check is the bellows pitch, the connector geometry and the sensor port position, and it happens before despatch.

Technical Features

The part serves the air intake tract and carries filtered air from the airbox to the turbocharger inlet or throttle body. It is moulded in Non-woven fabric with steel reinforcement and PP connector / TEEE, chosen because a non-woven wall over a steel helix keeps the duct open against intake depression while damping induction noise, with moulded PP or TEEE ends carrying the sealing geometry.

Specified on large-diameter ducts where noise damping and collapse resistance both matter. The steel helix is what stops the duct collapsing, so any duct that has been crushed in transit should be rejected on arrival.

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 2720903682 and 2720901282 against the number on the part you removed. Do not match on outline alone.

2. Check the interfaces

   Compare the bellows pitch, the connector geometry and the sensor port position before the vehicle is stripped further.

3. Inspect on arrival

   Look for transit damage on sealing faces and connectors. The steel helix is what stops the duct collapsing, so any duct that has been crushed in transit should be rejected on arrival.

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 2720903682 rather than carrying the old one over.

5. Pressure check before handover

   Refill, bleed the circuit and check for splits along the convolutions at working temperature before the vehicle leaves.