Womala Desiccant OE RQQ500020 for Land Rover Range Rover Sport

Product Overview

The Air Suspension Compressor Dryer RQQ500020 (also referenced as VUB504700) is an OE-grade desiccant dryer unit engineered for the air suspension compressor on select for Land Rover vehicles equipped with Hitachi compressors. This component removes moisture and humidity from the compressed air before it enters the air suspension system, preventing corrosion and ensuring reliable operation of the air springs, valve block, and lines .

VUB504700 is the superseded OE reference; RQQ500020 is the equivalent service part number for the same dryer unit .⚠️ Important: This dryer is specifically for Hitachi air suspension compressors. Confirm your vehicle is fitted with a Hitachi compressor before ordering — AMK compressor systems use a different integrated dryer design .

Key Features

• Desiccant moisture removal – removes humidity from compressed air before it reaches the air suspension system 

• Prevents system corrosion – saturated desiccant can allow water into the suspension, causing corrosion and slow leveling 

• OE-grade quality – available as Genuine Land Rover, Hitachi, VEMO, and Miessler Automotive alternatives 

• Direct-fit replacement – matches factory Hitachi compressor mounting

• One dryer per compressor – single unit required per compressor service 

OE Cross-Reference

💡 Supersession Note: RYX500060 was superseded by VUB504700, which is interchangeable with RQQ500020 for the same applications .

Technical Specifications

Vehicle Fitment

⚠️ Important: This dryer fits Hitachi compressor applications only. VIN cut-off 9A999999 applies for Discovery 3. Later builds may use AMK compressors with integrated dryers .

Signs of Failure

• Air suspension rising slowly – saturated desiccant restricting airflow

• Suspension fault warning – dashboard alert illuminated

• Compressor running frequently – system struggling to maintain pressure due to moisture-related issues

• Water in the air suspension system – corrosion risk to valve block and air springs 

💡 The desiccant inside typically saturates with moisture over time. A saturated dryer is a common cause of air suspension faults on these models, allowing water into the system and causing corrosion or slow leveling .

Critical – Verify Your VIN Before Ordering

Compressor dryers are compressor-type-specific (Hitachi vs. AMK). Confirm your vehicle has a Hitachi compressor before ordering — “Made in Japan” stamping indicates Hitachi. Provide your VIN – our team confirms exact compatibility before dispatch. We cannot accept returns for misordered parts without VIN verification.

💡 Installation Tip: Professional installation recommended. This dryer is often replaced as part of a compressor repair kit that includes a new dryer end cap, piston seal, glide seal, and filters to restore full compressor output. If the desiccant is saturated, replacing the dryer alone may not resolve underlying compressor wear — inspect the piston seal and end cap for damage .

Why Choose Us

Contact us for bulk orders or VIN‑checked quotes.

Specifications subject to change; images for reference only.Aftermarket replacement – not affiliated with Jaguar Land Rover.

Frequently Asked Questions

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