An automotive replacement part designed to maintain coolant levels and allow reliable system bleeding. Gives Land Rover Discovery owners reassurance against leaks and overheating. Is the VGOL Coolant Expansion Tank Bleeder Screw the right fit for your Discovery 4 or 5?
⚡ At a Glance
- • Sealing Performance: Secure seal maintains proper coolant levels and system efficiency
- • Best for: Owners and technicians working on Land Rover Discovery 4 and 5 models
- • Not ideal for: Vehicles other than Land Rover Discovery 4 and 5
Plastic bleeder screw identified by part number LR055301, compatible with Discovery 4 and 5. Designed to seal the coolant expansion tank and assist controlled bleeding.
Secure Coolant Retention – With a precision bleeder-seal design
Threaded bleeder engages the expansion tank outlet to create a tight seal and control flow during bleeding. Materials and thread geometry combine to limit seepage under pressure.
Reliable sealing keeps coolant where it should be during operation and maintenance, reducing the chance of loss or contamination.
Durable in the Engine Bay – Thanks to heat-resistant plastic construction
Manufactured from plastic chosen to withstand heat, pressure and coolant exposure without rapid degradation. The material resists chemical contact from common coolants.
Maintains integrity under typical engine conditions, avoiding warping or corrosion that can lead to premature replacement.
Supports Effective Bleeding – With a design aligned to LR055301 specification
Conforms to the LR055301 reference to assist controlled venting of trapped air during coolant system bleeding. Proper venting restores consistent coolant circulation.
Helps reduce the risk of overheating by enabling technicians and owners to remove air pockets and restore correct coolant flow.
✨ The 4 Key Reasons for VGOL Coolant Expansion Tank Bleeder Screw
- Heat-resistant plastic — Withstands engine bay temperatures and pressure for dependable use
- Resists coolant exposure — Durable against chemical contact to preserve component integrity
- Part number LR055301 reference — Simplifies ordering and confirms correct replacement for technicians
- Supports effective bleeding — Enables removal of trapped air, helping reduce overheating risk
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Brand: VGOL
- Part Number: LR055301
- Compatibility: Land Rover Discovery 4 and 5
- Material: Heat-resistant plastic
❓ Frequently Asked Questions
Q: Is this compatible with my Land Rover Discovery?
A: Compatible with Land Rover Discovery 4 and 5 models, designated by part number LR055301.
Q: What material is the bleeder screw made from?
A: Made from plastic selected to withstand heat, pressure and coolant exposure in the engine bay.
Q: Will it help prevent coolant leaks?
A: Secure sealing design helps maintain proper coolant levels and reduces the risk of leaks during operation and servicing.
🏆 Our Verdict
Suitable for owners and technicians who need a direct-fit bleeder for Land Rover Discovery 4 and 5. The key selling point is a heat-resistant plastic design matched to part number LR055301 for reliable sealing and controlled bleeding. Cost-effectiveness depends on correct fit and durability, making it a practical spare for long-term maintenance.
