Ref. 9909 3 0025

Upgrade Kit
Height Sensors
3P → 3H

Name: Volkswagen ID.BUZZ Air Lift Height Sensor Upgrade Kit 3P → 3H (≈ 27705)
Price: 628.0 EUR
Availability: InStock

Equivalent to Air Lift 27705 — null-bar quality

Air Lift 3P Air Lift 3H ALP4 ≈ Air Lift 27705

📡 Upgrade Kit Equivalent to ALP 27705
null-bar manufacturing

4 height sensors · Sensor harness included · Plug & Play 3P/3H · Complete hardware · Optional brackets

3P

Pressure-only management

+ this kit →

3H

Height + pressure

📋 Description

The null-bar 3P → 3H Upgrade Kit is the solution to convert your Air Lift 3P management system (pressure control only) into a true 3H system, combining height AND pressure control simultaneously.

Designed by null-bar, a renowned German specialist in air and static suspension parts, this kit is the premium alternative to the original Air Lift 27705. It includes the 4 rotary height sensors, dedicated wiring harness, and all necessary mounting hardware.

Connection to your existing 3P main harness is fully plug & play — no soldering, no electronic modification. A null-bar mounting bracket is available optionally depending on your setup.

⚙️ Specifications

Reference 9909 3 0025

Brand Streetec

Equivalent Air Lift 27705

Function 3P → 3H Upgrade

Sensors 4 rotary height sensors

Connection Plug & play — existing 3P/3H harness

Brackets Optional — selectable during order

Weight 2 kg

📦 Kit Contents

→

4 × rotary height sensors One per shock absorber — rotating arm with ball joint

→

1 × sensor wiring harness Plug & play — direct connection to 3P/3H harness

→

Linkages and ball joints Transfer arms for motion transmission

→

Screws and mounting hardware Everything needed to secure the sensors

+

Mounting bracket(s) (optional) Selectable during order based on your setup

🔧 Installation — How it works

1

Attach the sensors to the shock absorbers

A rotary height sensor is installed on each shock absorber via brackets, connected by a linkage to the suspension arm.

2

Connect the sensor harness

The included harness connects directly to the existing main 3P harness — plug & play, no soldering or modification.

3

Calibrate management via the app

The 3P ECU automatically detects sensors. Calibrate heights via the Air Lift Performance app (iOS/Android).

4

Enjoy 3H control

Your system now manages real height + pressure simultaneously — the best possible control accuracy.

🔗 System Compatibility

Air Lift 3P

Compatible — target system of the upgrade (ref. 27785 / 27689 / 27485)

Air Lift 3H

Compatible — replacement of existing sensors (ref. 27690 / 27693)

Air Lift ALP4

Compatible — upgrade from ALP4 system to height control

💡

What is the difference between 3P and 3H?

The 3P system controls height via air pressure in the bags — convenient but less precise, as pressure varies with load and temperature. The 3H system adds mechanical height sensors that measure the actual position of the suspension arm, allowing simultaneous height + pressure management. Result: a real and constant stance, regardless of vehicle load.

🆚 null-bar vs Air Lift 27705 — What are the differences?

Air Lift 27705

Official OEM Air Lift Performance kit

4 original height sensors

Wiring harness included

Original screws and hardware

Universal brackets available separately (ref. 14550)

9909 3 0025

Premium alternative null-bar brand (DE)

4 rotary height sensors

Wiring harness included

Complete screws and hardware

Brackets available as an option when ordering

🛡️

Manufacturer’s warranty — null-bar

Part covered by the null-bar manufacturer’s warranty against any manufacturing and material defects. null-bar is a German brand recognized in the air & static community, with parts used and approved by professional installers across Europe.