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
      4.7 / 5 (233)
      £4.00
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      £4.00
      Only £3.80 with Motoring Club premium
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      Only £3.80 with Motoring Club premium
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      Holts
      4.6 / 5 (161)
      £4.00
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      Holts
      4.3 / 5 (97)
      £4.00
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      £4.00
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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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      Only £5.70 with Motoring Club premium
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      Holts
      4.5 / 5 (400)
      £9.49
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      £9.49
      Only £9.02 with Motoring Club premium
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      Only £9.02 with Motoring Club premium
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      Holts
      4.5 / 5 (126)
      £4.49
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      £4.49
      Only £4.27 with Motoring Club premium
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      Only £4.27 with Motoring Club premium
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      Granville
      4.4 / 5 (119)
      £4.19
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      £4.19
      Only £3.98 with Motoring Club premium
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      Only £3.98 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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      Holts
      4.5 / 5 (61)
      £7.00
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      £7.00
      Only £6.65 with Motoring Club premium
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      Only £6.65 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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      Only £15.00 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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      Only £4.74 with Motoring Club premium
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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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      Only £5.22 with Motoring Club premium
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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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      Only £11.87 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
      Only £58.89 with Motoring Club premium
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      Online Exclusive
      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
      Only £53.20 with Motoring Club premium
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      Online Exclusive
      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
      Only £34.20 with Motoring Club premium
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      Online Exclusive
      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
      Only £48.45 with Motoring Club premium
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      Online Exclusive
      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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      Ways to apply

      • Build your basket and select Trade Credit at checkout.
      • Apply below to check your eligibility.

      Activate your limit

      • If eligible, receive your Trade Credit limit instantly.
      • Authenticate your business with an ID check*.

      *Only required on your first Trade Credit purchase.

      Pay on account

      • Complete your purchase and pay on account at the end of the following month.
      • Enjoy no interest or transaction fees**.

      **Late payments can impact your business credit

      Already applied and have a limit? Approve your order via SMS to finalise your purchase.