MAN TGA/TGS/TGX Air Pressure Sensor Switch 81.27421-0251 81274210251 0-16bar Air Flow Sensors

Description:
This listing is for a genuine MAN air pressure sensor with hose assembly, OEM part number 81.27421-0251 / 81274210251, removed from a MAN heavy commercial vehicle. The component is used to monitor compressed air pressure (typically 0–16 bar) in the brake and air system and send a signal to the vehicle ECU/instrument cluster. It features an M12x1.5 threaded pressure port, 4‑pin electrical connector and a 24V operating voltage, as specified in multiple aftermarket catalogues for this reference.

Application & Compatibility:
According to MAN and aftermarket parts catalogues, this pressure sensor is suitable for a wide range of MAN truck applications, including TGA, TGS and TGX series from approximately 2001 onwards, covering various chassis and engine variants used in long‑haul, distribution and construction vehicles. It is commonly listed as an air pressure / brake system sensor or air switch for these models. Cross references include MAN 81274210184, 81274210230, 81274210246, 81274210262 and 81274216048, along with aftermarket equivalents DT 3.70010, Febi Bilstein 38457, Peters 080.000-00A and others. Always match the OE number 81.27421-0251 or 81274210251 and compare the thread, connector and hose layout with your old unit before purchase.

Technical details:
• OEM: MAN 81.27421-0251 / 81274210251
• Function: compressed air / brake system pressure sensor / switch
• Pressure range: 0–16 bar with switching function
• Thread: M12x1.5, spanner size 30 mm
• Electrical: 4‑pin connector, 24V operation
• Sensor thickness / body length: approx. 48.5 mm
• Approx. weight: 0.05–0.1 kg
• Supplied with the original angled hose and fittings, as pictured.

Condition:
Used, in Grade B condition. The sensor and hose were pressure‑tested on the vehicle prior to removal and confirmed to be fully functional with correct switching behaviour. Externally there are light marks, minor dirt and oxidation from normal service, but no cracks, broken connectors or damaged threads. The rubber seal on the connector and the hose show no visible leaks. The part has been visually inspected, cleaned of heavy contamination and is ready for installation. Please review all photos to assess the cosmetic condition.

Installation notes:
This is a direct replacement part for MAN TGA/TGS/TGX models using this sensor reference. Installation should be carried out by a qualified technician familiar with commercial vehicle air and brake systems. After fitting, check for air leaks at the M12 port and hose fittings, confirm correct electrical connection to the 4‑pin plug and verify system pressure readings / warning lights via diagnostic tool or dashboard. No coding is normally required when replacing like‑for‑like sensors, but always follow the official MAN workshop procedures.

Warranty & Returns:
The item is covered by our 3‑month warranty against mechanical and electrical defects under normal operating conditions. This used part was tested on the vehicle before dismantling. If the sensor proves faulty within the warranty period, please contact us for support. We accept returns within 30 days of delivery; the buyer is responsible for return postage and safe packaging. The part must be returned in the same condition with our markings intact.

Shipping & Returns:
We ship across UK/EU with tracked services. Returns accepted within 30 days; buyer pays return postage. Please inspect upon arrival and message us with any concerns.

Why Buy From Us:
Genuine part, 3-month warranty, fast dispatch, secure packaging.