Réf : AA-3644

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AccuAir VU4 Manifold 4 Corners AA-3644 – Valve Block | Rasl'Bitume

à €649,00

Quantity

100% SECURE PAYMENT

4.9/5 SUR + OVER 120 VERIFIED REVIEWS

EXPERT SUSPENSION SINCE 2017

INCLUDED TECHNICAL SUPPORT

What is a manifold?

The manifold — or valve block — is the heart of any air ride system. It receives compressed air from the tank and distributes it to each suspension airbag via solenoid valves controlled by the ECU. In a 4-corner system like the VU4, each wheel has its own inlet and outlet valve, allowing fully independent height control on each corner — for perfect leveling, even on uneven terrain.

4 Independently controlled corners

200 psi Maximum pressure guaranteed

¼" NPT Fittings on all ports

∞ Millions of cycles guaranteed

🧱

Aluminum body

Machined anodized aluminum block — lightweight, corrosion-resistant, easy to integrate into a custom trunk.

🔩

Stainless steel valves

100% stainless steel internal components for maximum durability and perfect sealing cycle after cycle.

💧

Bubble-tight sealing

Maximum flow solenoid valve architecture with bubble seal — zero leaks even at high pressure.

🔌

Waterproof harness

Weatherproof plug & play connectors — designed to survive the undercarriage environment.

🔧

¼" NPT fittings

All ports equipped with ¼" NPT — compatible with standard air ride plumbing without adapters.

📐

Compact size

134 × 70 × 70 mm (5.28" × 2.75" × 2.75") — easy to position in any trunk or custom install.

Why choose the VU4?

🎯

4-corner control

Each airbag is controlled independently — precise inflation and deflation wheel by wheel.

🔩

All stainless steel valves

Robust internal stainless steel architecture — bubble-tight sealing and millions of cycles guaranteed.

💧

Waterproof harness

High-quality moisture-resistant connectors — total reliability in the undercarriage environment.

🔌

Plug & Play e+ ECU

Direct connection to the AccuAir e+ ECU via dedicated harness — no custom wiring needed.

⚡

Maximum flow rate

Optimized valve architecture for high air flow — fast suspension raise and lower.

📐

Compact size

134 × 70 × 70 mm — easily fits into a narrow trunk or a custom steel/aluminum mount.

💡

Good to know: The VU4 comes with ¼" NPT → ⅜" PTC fittings for 3/8" PTC hoses. If you use ¼" hoses, you will need additional reducers. Also, remember to install a water trap between the tank and the manifold inlet to protect the valves — this may affect the warranty.

Step-by-step installation

Choose the mounting location

The VU4 is usually mounted in the trunk or under the chassis, in a dry and accessible location. Plan a rigid mount on sheet metal or custom bracket to avoid vibrations. Position the manifold to facilitate hose routing to the 4 air springs.

Connect the air plumbing

Connect the manifold inlet to the tank via your water trap (mandatory for warranty). Then connect each valve outlet to the corresponding air spring using ⅜" DOT-PTC hose. ¼" NPT fittings are provided, compatible with standard AccuAir fittings.

Connect the harness to the e+ ECU

Connect the VU4 plug & play harness to the dedicated port on your AccuAir e+ ECU. The connection is unique — you cannot plug into the wrong port. Secure the wiring neatly to avoid rubbing on moving parts.

Test for leaks and calibrate

Before closing the trunk, gradually pressurize the system and check each fitting with soapy water. Once sealed, proceed to calibration from the e-Level+ app (if you have the Height+ or Pressure+ kit).

⚠️

Important: Installing a water trap between the tank and the VU4 inlet is mandatory to maintain the warranty. Condensed moisture in the hoses can damage the stainless steel solenoid valves over time. Do not compromise on this.

Delivery contents

🔧

1 × VU4 4-corner manifold
Aluminum block with 8 stainless steel solenoid valves — 1 inlet + 1 outlet per corner
🔌

Plug & play harness
Waterproof connectors for direct connection to the AccuAir e+ ECU
🔩

¼" NPT → ⅜" PTC fittings
Fittings for 3/8" PTC hoses included on all ports

📌

Not included in this kit: Air tank, compressor, AccuAir e+ ECU, water trap (highly recommended), hoses, and air springs. If you are installing a complete system, contact us for a quote on all components.

Technical sheet

Feature	Detail
Product reference	AA-3644
Brand	AccuAir
Type	4-corner manifold (4-corner valve unit)
Number of valves	8 solenoid valves (inlet + outlet × 4 corners)
Valve materials	Stainless steel — 100% stainless steel
Manifold body	Anodized aluminum
Port fittings	¼" NPT on all ports
Compatible tubing	⅜" DOT-PTC (fittings included) · ¼" with reducers
Max pressure	200 psi
Sealing	Bubble-tight sealing
Harness	Plug & play waterproof — AccuAir e+ ECU connection
Compatible ECU	AccuAir e+
Dimensions	134 × 70 × 70 mm (5.28" × 2.75" × 2.75")
Weight	5 kg (packaging)
Manufacturer warranty	1 year (limited) — water trap mandatory

Frequently asked questions

What is the difference between the VU4 and the ENDO-VT?

The VU4 is an external manifold — a compact block you mount separately in the trunk or under the chassis. The ENDO-VT is integrated directly into the air tank (tank-mounted), reducing the number of connections and simplifying installation for setups with custom tanks. Both are 100% compatible with the AccuAir e+ ECU. The VU4 offers more location flexibility, the ENDO-VT provides a cleaner look.

Is the VU4 compatible with my existing AccuAir ECU?

Yes — the VU4 is designed to work with the AccuAir e+ ECU. If you have an older SwitchSpeed or e-Level system pre-2019 (R9/R10), you’ll need to check harness compatibility. For a recent e+ Connect system, it’s direct plug & play.

Can I use this manifold with ¼" tubing?

Yes, but you will need ¼" NPT → ¼" PTC reducers (not included). The fittings included in this kit are for ⅜" DOT-PTC tubing, which is the most common standard on air ride setups. We recommend ⅜" for optimal flow and faster suspension raise/lower.

Is the water trap really mandatory?

Technically you can skip it, but AccuAir conditions its warranty on using a water trap between the tank and the VU4 inlet. Moisture condensing in the pipes eventually reaches the valves and corrodes them gradually — even stainless steel. It’s a small investment of a few euros that can save you from replacing a €650 manifold.

Can I install the VU4 under the chassis, exposed to the elements?

The harnesses are waterproof and the aluminum block resists humidity well, but installing it under the chassis directly exposed to water, salt, and mud splashes is not recommended long-term. If you have no other choice, protect the manifold with a sealed cover and apply an anti-corrosion product on the fittings.

Are you setting up your air ride setup?

We help you assemble the complete list of parts — manifold, tank, ECU, compressor, air springs. Tell us your vehicle and budget.

💬 Contact us

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AccuAir VU4 Manifold 4 Corners AA-3644 – Valve Block | Rasl'Bitume

Name: AccuAir VU4 Manifold 4 Corners AA-3644 – Valve Block | Rasl'Bitume
Brand: Rasl'Bitume
SKU: AA-3644
Price: 649.0 EUR
Availability: InStock