The filler cap (SKU 598820) is a sealing cap used to close a fluid reservoir or filler neck suitable for Range Rover Classic 1974 Onwards, preventing contamination, spillage, and pressure loss within the relevant system. Filler caps are used across multiple systems including coolant expansion tanks, brake fluid reservoirs, and differential or gearbox filler points; using the correct cap ensures a proper seal and maintains system integrity. A degraded or incorrect cap can allow moisture ingress, fluid loss, or pressure imbalance, leading to accelerated wear or system failure. Key Features Designed to OEM specification for a secure, leak-free fit on the designated filler neck Replaces aged, cracked, or poorly sealing original caps that compromise fluid containment Compatible with the original Land Rover component specification for direct fitment without modification Inspect the filler neck itself for damage or corrosion when replacing the cap, and replace both if wear is evident Vehicle Fitment Please refer to the part title and SKU 598820 to confirm fitment for your specific Land Rover model, year, and engine variant. Not sure about fitment? Feel free to get in touch at [email protected]