Auto engine cylinder head gasket for Volv o Cylinder head gaskets 31430058 30731262

Product Description:

 
Engine cylinder head gasket
OE NO.: 31430058 30731262

Applicable vehicle type: For VO LVO

Engine cylinder gaskets, formally known as cylinder head gaskets, serve as the core sealing components installed between the mating surfaces of the cylinder head and cylinder block. They constitute critical wear parts during major engine overhauls. Their primary function is to isolate the engine's internal combustion gases, coolant, and oil passages, preventing fluid leakage to maintain proper operating pressure and thermal cycle efficiency. Thus, they form the ‘first line of defence’ within the engine's sealing system.

Installation Core Requirements

• Before installation, thoroughly clean the mating surfaces of the cylinder head and cylinder block to remove carbon deposits, oil污, and metal chips, to prevent impurities from causing seal failure.
• Check the flatness of the cylinder head. If the deformation exceeds 0.05mm, it must be ground and repaired; otherwise, the cylinder gasket will not be able to seal effectively.
• Tighten the cylinder head bolts strictly according to the diagonal, step-by-step tightening principle, following the original factory torque standards (typically 25-40N・m initial tightening + 90°-180° angle tightening). It is strictly prohibited to tighten all at once or apply excessive torque.
• The cylinder gasket has directional markings (such as "TOP", "UP"), which must be installed facing upward and must not be inverted.

• 20 years of specialized auto parts industry experience
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