Head Gasket & Exhaust Sealant

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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Holts
4.5 / 5 (397)
£9.49
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£9.49
Only £9.02 with Motoring Club premium
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Holts
4.7 / 5 (233)
£4.00
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£4.00
Only £3.80 with Motoring Club premium
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Steel Seal
3.7 / 5 (194)
£44.49
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Klarna financial company Spread the cost From £2.21 per month
£44.49
Klarna financial company Spread the cost From £2.21 per month
Only £42.27 with Motoring Club premium
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Klarna financial company Spread the cost From £2.21 per month
Only £42.27 with Motoring Club premium
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Granville
4.4 / 5 (118)
£3.99
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£3.99
Only £3.79 with Motoring Club premium
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Holts
4.3 / 5 (50)
£15.79
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£15.79
Only £15.00 with Motoring Club premium
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Holts
4.6 / 5 (161)
£4.00
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£4.00
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Holts
4.5 / 5 (61)
£7.00
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£7.00
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Holts
4.7 / 5 (47)
£6.00
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£6.00
Only £5.70 with Motoring Club premium
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Holts
4.3 / 5 (97)
£4.00
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£4.00
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Holts
4.5 / 5 (126)
£4.49
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£4.49
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Loctite
4.5 / 5 (32)
£12.49
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£12.49
Only £11.87 with Motoring Club premium
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Holts
4.7 / 5 (41)
£4.99
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£4.99
Only £4.74 with Motoring Club premium
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Sealey
£61.99
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Klarna financial company Spread the cost From £3.08 per month
£61.99
Klarna financial company Spread the cost From £3.08 per month
Only £58.89 with Motoring Club premium
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Klarna financial company Spread the cost From £3.08 per month
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Holts
4.1 / 5 (47)
£5.50
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£5.50
Only £5.22 with Motoring Club premium
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Laser
£36.00
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Klarna financial company Spread the cost From £1.79 per month
£36.00
Klarna financial company Spread the cost From £1.79 per month
Only £34.20 with Motoring Club premium
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Klarna financial company Spread the cost From £1.79 per month
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Laser
£56.00
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Klarna financial company Spread the cost From £2.79 per month
£56.00
Klarna financial company Spread the cost From £2.79 per month
Only £53.20 with Motoring Club premium
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Klarna financial company Spread the cost From £2.79 per month
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Laser
£51.00
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Klarna financial company Spread the cost From £2.54 per month
£51.00
Klarna financial company Spread the cost From £2.54 per month
Only £48.45 with Motoring Club premium
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Klarna financial company Spread the cost From £2.54 per month
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Laser
£507.00
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Klarna financial company Spread the cost From £14.75 per month
£507.00
Klarna financial company Spread the cost From £14.75 per month
Only £481.65 with Motoring Club premium
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Klarna financial company Spread the cost From £14.75 per month
Only £481.65 with Motoring Club premium
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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 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, or useful Holts Gun Gum putty. Buy online or click & collect from your local Halfords store today.