Head Gasket and Exhaust Repairs
Our range of head gasket repair products and exhaust sealants offer easy solutions to get your engine running smoothly and efficiently again. Whether you’ve got a leak, a blown head gasket, or want to prevent an overheated radiator - you can fix the issue at home with Halfords.
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Head gasket repair at home
Repairing a troublesome exhaust or, even worse, a head gasket, can be costly. Thankfully, we’ve got a wide range of exhaust repair kits and head gasket sealants to help experienced home mechanics do the job themselves. Professional mechanics love our products too as they offer a high-quality, affordable solution.
Head gasket symptoms
An overheating engine is one of the most common symptoms of a blown head gasket.
Your radiator needs to be constantly topped up with coolant.
White smoke coming from the exhaust.
Bubbling in the radiator or reservoir.
Your oil is discoloured and milky.
About head gasket and exhaust sealant
Seal a cracked or blown head gasket with the power of steel by using the high-powered Steel Seal Head Gasket Repair - opens in a new tab Sealant. You might prefer a pour-in option like this, or you could use a flexible gasket sealant designed to withstand high temperatures and target specific areas. Exhaust silicone sealant cures quickly to provide a permanently flexible seal.
Exhaust repair products
Make repairs to holes and splits with a highly rated, easy-to-fit repair bandage - opens in a new tab, or useful Holts Gun Gum putty. Buy online or click & collect from your local Halfords store today.
Head gasket and exhaust repair FAQs
Exhaust paste seals small holes or joints in your exhaust. Just clean the area, apply the paste evenly, and let it dry before starting the engine. Products like these can be found in Halfords.
Exhaust paste usually sets in 2 to 4 hours, but it’s best to let it cure overnight for a strong seal. Always follow the instructions on the packaging. It’s a quick fix in the world of Head Gasket & Exhaust Sealant, especially for minor leaks.
Head gasket sealant is a temporary fix. It can last a few months or longer, depending on the car’s use and condition. It’s not a replacement for a proper repair but a handy option found in most head gasket & exhaust sealant kits when you're in a bind.