PCD500030 Coolant Expansion Tank /Overflow tank Cap – Fits Discovery 3 & 4, Range Rover L322 & Sport, Freelander 1 at affordable price in Nairobi Kenya

OEM Reference: PCD500030

Supersessions: PCD000080 → PCD000090 → PCD500030

Product Type: Coolant Expansion Tank Cap

Brand Options Available: Febi Bilstein, Britpart, Eurospares (Aftermarket OE-Quality)

Product Overview

The PCD500030 Expansion Tank Cap is designed to maintain correct cooling system pressure, preventing premature coolant boiling and protecting the engine from overheating. A weak or failing cap can cause coolant loss, overheating, or unexplained pressure fluctuations — and yes, it’s often overlooked until the temperature gauge reminds you.

This cap matches OEM pressure specifications and sealing performance for selected Land Rover and Range Rover applications.

Vehicle Fitment

Compatible Models & Engines

Land Rover Discovery 3 (LR3)

• V8 4.4L | 2005 – 2009
• V6 4.0L | 2005 – 2009
• Includes all variants within these engine ranges

Range Rover L322 (Full Size)

• 4.4L V8 (Jaguar AJ Engine) | 2006 – 2009
• 4.2L Supercharged (Jaguar AJ Engine) | 2006 – 2009

Range Rover Sport

• 4.4L V8 | 2006 – 2009
• 4.2L Supercharged | 2006 – 2009
• 2.7 TDV6 | 2006 – 2009
• 3.6 TDV8 | 2006 – 2009

Land Rover Freelander

• TD4 Diesel | 2002 – 2005
• 1.8 Petrol | 2002 – 2005

OEM Cross Reference

Primary OEM Part Number:

• PCD500030

Superseded From:

• PCD000080
• PCD000090

(Always confirm with VIN before ordering, especially for mid-year production changes.)

Technical Specifications

• Cooling system pressure-regulating cap
• Integrated pressure relief valve
• OEM-calibrated spring tension
• Durable thermoplastic housing
• Direct replacement fit

Common Failure Symptoms

• Coolant smell after driving
• Minor coolant overflow with no visible hose leaks
• Intermittent overheating
• Soft upper radiator hose after engine warm-up

If your cooling system components are fine but pressure won’t stabilize, the cap is often the quiet culprit.