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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.95 | 2 to 5 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.95 | 2 to 5 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £3.99 | 3 to 5 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £8.95 | 2 to 5 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.95 | 2 to 5 working days |
Product Number: 511
Variations
Small coolant leaks at radiators and heater cores that are difficult or costly to repair mechanically can be permanently sealed without draining the system. BG Universal Cooling System Sealer (511, 354ml) quickly and permanently repairs these leak points. The sealer fibres are six to ten times smaller than the passages in radiators and heater cores, so they will not clog the cooling system. Compatible with aluminium and plastic cooling system components.
The formula contains fibres that are 6–10 times smaller than the narrowest passages in radiators and heater cores, so the sealer circulates freely without blocking coolant flow until it reaches a leak point, where it forms a permanent seal. It is compatible with all antifreezes and cooling system metals including aluminium.
Add to the coolant system with the engine warm, following the product label instructions. Suitable for use in all petrol and diesel engines. For persistent or large leaks, professional mechanical repair is recommended.
Sealer fibres are six to ten times smaller than the narrowest passages in the cooling system — seals leaks without clogging the radiator or heater core.
Delivered in 2–3 working days to mainland UK. 30-day returns on unopened items.
About PartsForMachines:PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specializing in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalog of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
| Specific Gravity @ 15.6°C (60°F) | 1.0013 |
|---|---|
| Density, U.S. lb./gal. (kg/m³) @ 15.6°C (60°F) | 8.356 (1001.3) |
| Color | Light Brown |
| pH | 10.7 |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Standard Delivery: £3.99
Delivery Estimate: 3 to 5 working days
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| Technical Specification | ||
|---|---|---|
| PRODUCT NUMBER | 540E | 546E |
A. A 354ml bottle of BG Universal Cooling System Sealer — standard single-vehicle dose for typical passenger and light-commercial cooling system capacities.
A. BG Cooling System Sealer addresses small leaks in the cooling system — head gasket weeps, radiator pinhole leaks, heater core leaks — by sealing minor passages without obstructing the coolant flow paths.
A. Add to the cooling system with engine cool. Run engine at operating temperature for the recommended period to circulate the sealer through the system and reach the leak point. Refer to bottle for specific procedure.
A. Yes. BG Universal Cooling System Sealer is formulated to be safe in aluminium, cast iron and mixed-metal cooling systems. Does not block heater cores or radiator cores when used at the prescribed treat rate.
A. No. BG Cooling System Sealer addresses minor weeps and pinhole leaks. Major head gasket failure (loss of coolant into the cylinder, white exhaust smoke, coolant-oil contamination) requires mechanical repair and cannot be sealed chemically.
A. For minor leaks in good condition systems, BG Cooling System Sealer can provide an extended-term seal. Position it as part of overall cooling-system care, not as a substitute for ongoing condition monitoring.
A. BG positions it as a sealer for existing leaks rather than a preventive treatment. For preventive cooling-system protection, BG Universal Super Cool (PN 546) is the appropriate product.
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