The cylinder head bolt is a metal element that connects the cylinder head, cylinder head gasket and the cylinder block itself. The cylinder head is designed to accommodate the gas distribution mechanism of the engine. The cylinder head gasket (cylinder head gasket) is designed to seal the junction of the head and cylinder block, to keep various working fluids and gases inside the working cavities of the engine, where these fluids and gases should be. Pressing the cylinder head to the block itself through the gasket is provided with special bolts (cylinder head bolts). In turn, the cylinder head bolts also have sealing elements that reinforce the cylinder head seal.

1. VARIO Platform/Chassis
2. VARIO Van
3. VARIO Dump Truck
4. VARIO Bus
5. VARIO Cab with engine
6. LK/LN2
7. CITARO (O 530)
8. ATEGO
9. ECONIC
10. CITO (O 520)
11. UNIMOG
12. AXOR
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14. ATEGO 2
15. AXOR 2
16. ACCELO
17. ZETROS
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19. SOLO SR
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The usage of cylinder head cover bolt seal ring

ELRING brand Seal Ring, cylinder head cover bolt protect cylinder head components from leaks of working fluids and lubricants, protect against penetration of dust, dirt, moisture, and also seal the places where parts fit. Usually, cylinder head cover bolt rings are changed when dismantling the cylinder head section, when oil or coolant appears at the junction of the block with the head, when light impurities appear in the oil.