Allmakes 4×4 Expansion Tank Cap PCD000070

Description

The Allmakes 4×4 Expansion Tank Cap PCD000070 is a high-quality aftermarket replacement designed to maintain proper pressure and sealing in the cooling systems of compatible Land Rover models. Built by Allmakes 4×4—a trusted name in Land Rover replacement parts—this expansion tank cap offers a practical and cost-effective solution for those needing to replace a worn or faulty original cap. It serves as a direct-fit alternative to OEM part number PCD000070, providing dependable performance and long-term durability without the OEM price tag.

Working

The Allmakes 4×4 Expansion Tank Cap PCD000070 plays a critical role in the cooling system by regulating internal pressure inside the expansion tank. When engine temperature rises, coolant expands, and the cap seals the system to maintain pressure. If pressure exceeds safe limits, the integrated release valve activates, safely venting excess pressure to prevent damage to the radiator, hoses, and engine. The cap also keeps air out of the system to ensure efficient coolant circulation. With its OEM-style design and threading, it installs easily on factory expansion tanks with no special tools required.

Quality and Capability

Engineered with heat-resistant plastics and reinforced sealing components, the Allmakes 4×4 Expansion Tank Cap PCD000070 resists cracking, leaks, and pressure loss under extreme operating temperatures. It’s tested for reliability, thermal endurance, and pressure calibration, offering consistent performance in both city traffic and off-road conditions. While it is a more affordable alternative to genuine Land Rover parts, it closely matches OEM standards in fitment and functionality. Trusted by Land Rover specialists and independent garages alike, this cap is a dependable solution for maintaining your engine’s cooling efficiency.