Combustion Leak Tester Kit, Blown Head Gasket Block Detector Petrol/Diesel Fluid

Universal fit Petrol, diesel & LPG; tapered silicone bung seals Ø 20 – 40 mm necks. Block-Check Blue™ is the fast, fool-proof way to confirm (or rule out) a blown head-gasket, cracked head or block. Fill the tester with2 mL of Block-Check Blue™ and seat it in the radiator or expansion-tank (coolant-reservoir) neck.

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