The cylinder head bolt is the metal element that connects the head to the cylinder blocks; the cylinder head gasket and the cylinder block itself. Correct tightening of the cylinder head bolt is a critical factor for the normal operation of the engine oil channels, coolant and combustion chamber, since excessive or insufficient tightening leads to incorrect contact sealing pressure, which will affect the failure of the power unit (cracks), because the cylinder head is part of the combustion chamber.

1. TRAFIC II Bus (JL)
2. X-TRAIL (T31)
3. X-TRAIL SUV (T31)
4. PRIMASTAR Bus (X83)
5. PRIMASTAR Van (X83)
6. MEGANE III Hatchback (BZ0/1_, B3_)
7. MEGANE III Grandtour (KZ0/1)
8. GRAN TOUR III Grandtour (KZ0/1)
9. LATITUDE (L70_)
10. VIVARO A Platform/Chassis (X83)
11. MOVANO B Bus (X62)
12. MOVANO Dump Truck (X70)
13. VEL SATIS (BJ0_)
14. MASTER III Bus (JV)
15. NV400 Bus (X62, X62B)
16. NV400 Van (X62, X62B)
17. NV400 Platform/Chassis (X62, X62B)
18. MASTER III Platform/Chassis (EV, HV, UV)
19. MASTER III Van (FV)
20. ESPACE III (JE0_)
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The construction of the cylinder head bolts

The DT Spare Parts brand Cylinder Head Bolt consists of a single piece of metal, which has been shaped into a bolt. It happens with a low-lying thread and a thread starting approximately from the center of the product (depending on the types of cylinder blocks).

To solve the problem of correct sealing, two types of cylinder head bolts have been developed - with a rolled bar and tension bolts. The tension bolt has a flow rate and deforms plastically, which guarantees a uniform tightening compared to a conventional cylinder head bolt. The stretch bot does not need a lift, as it can move at a certain angle by itself when correctly twisted.