Cylinder head bolts for automobile

Spare: Cylinder head bolt kit original

Information - Head bolts & cylinder head bolt kit

The performance accuracy of all elements of the engine is very important and this became an axiom. And the tightening of the cylinder head bolts is not an exception. And the reason is simple. Imagine the load experienced by all elements of the mount: strong temperature fluctuations, and constant vibration. As a result of numerous studies inquired by professionals, the weight consists of 5000 kg or more. Imagine what kind of pressure undergoes every engine bolt while accelerating. To ensure the connection between the block and the cylinder head, you have to make sure that the bolts are stable long enough.

In most cases, the bolt is oblongated. Screwing this item in a block that has been affected by corrosion, torque is increased by several tens of units before the parts were linked up. If you have already tightened the bolt, you must know that the tension increasing is gradual and the material will initially take it`s elastic state, until, finally, will become ductile.

Later a further tension will lead to irreversible deformation of the material. In this state, the torque does not increase with any further tension. In practice, this condition is almost impossible to observe, if only the bolts are not lubricated with grease or oil in order to reduce the frictions to zero. Do not forget that the surface of the block and cylinder heads must be very well processed, they should not be wavy.

Particularly important are the transitions from one item to another. Remember that all replacement parts must be certified, like those offered in our online store.

And apart from cylinder head bolts, you can also purchase expansion flanks, valve injectors and other parts and components.

Cylinder head bolts: lifetime limits, common defects and their signs, tips and recommendations

The cylinder head bolts have no specified lifetime limit. Their replacement is performed at every demounting of the cylinder head, because of construction peculiarities (stretching properties) repeated installation of these parts may lead to their destruction.

Presence of engine defects may be pointed out by failures in its operation. They can be removed only by demounting of the cylinder head for diagnostics or repair. If there is a trip-computer in the car, it will indicate failure corresponding to engine defect. Also, dense white smoke from the exhaust pipe can be visible, and it indicates engine overheating.

Diagnostics of the cylinder head bolts is performed by specialists at a service station: they define, if there is necessity to demount the cylinder head and as a consequence – replace the bolts. Procedure of cylinder head demounting requires special skills and usage of peculiar equipment, for example, a lifting device, a torque wrench, etc.

As a rule, the cylinder head bolts are replaced at a service station. They are screwed with the help of a torque wrench in a strictly specified sequence with a precise tightening torque. Improperly tightened cylinder head bolts may lead to breakdown of the component and its elements.

Cylinder head bolts at low cost: Top Spares

Bolt Kit, cylinder head 175mm (REINZ, 14-32075-01) -20%
original Bolt Kit, cylinder head REINZ 14-32075-01 Article №: 14-32075-01
REINZ Bolt Kit, cylinder head 14-32075-01
£ 20,99**
£ 16,79
incl. 20% VAT, Shipping
Over 100 items in stock
  • Thread Size M10
  • Length [mm] 175
  • Bolt Head-/Nut Design Male Torx
  • Condition  New
Details
Washer, cylinder head bolt (DT, 9.12012) -20%
original Washer, cylinder head bolt DT 9.12012 Article №: 9.12012
DT Washer, cylinder head bolt 9.12012
£ 0,49**
£ 0,39
incl. 20% VAT, Shipping
Over 100 items in stock
  • Weight [g] 3,3
  • Inner diameter [mm] 10,5
  • Diameter [mm] 20
  • Thickness [mm] 2
  • Parameter A
  • Condition  New
Details
Bolt Kit, cylinder head 115mm (ELRING, 130.830) -20%
original Bolt Kit, cylinder head ELRING 130.830 Article №: 130.830
ELRING Bolt Kit, cylinder head 130.830
£ 19,99**
£ 15,99
incl. 20% VAT, Shipping
Over 100 items in stock
  • Thread Size M 10
  • Length [mm] 115
  • Bolt Head-/Nut Design Female Splined (Ribe-CV®)
  • Thread Pitch [mm] 1,5
  • Condition  New
Details
Bolt Kit, cylinder head 150,5mm (ELRING, 426.830) -20%
original Bolt Kit, cylinder head ELRING 426.830 Article №: 426.830
ELRING Bolt Kit, cylinder head 426.830
£ 25,49**
£ 20,39
incl. 20% VAT, Shipping
Over 100 items in stock
  • Thread Size M 10
  • Length [mm] 150,5, 95,3, 35
  • Bolt Head-/Nut Design Male Torx
  • Thread Pitch [mm] 1,5
  • Thread Pitch 1 [mm] 1,25
  • Thread Pitch 2 [mm] 1,25
  • Thread Size 1 M 8
  • Thread Size 2 M 8
  • Condition  New
Details
Washer (BOSCH, 1 280 113 716) -20%
original Washer BOSCH 1 280 113 716 Article №: 1 280 113 716
BOSCH Washer 1 280 113 716
£ 4,49**
£ 3,59
incl. 20% VAT, Shipping
Cylinder Head Bolt ANU (FEBI BILSTEIN, 26420) -20%
original Cylinder Head Bolt FEBI BILSTEIN 26420 Article №: 26420
FEBI BILSTEIN Cylinder Head Bolt 26420
£ 2,49**
£ 1,99
incl. 20% VAT, Shipping
Over 100 items in stock
  • Length [mm] 178
  • Outer thread [mm] M12
  • Spanner Size 18
  • Bolt Head-/Nut Design Female Star
  • Screw length below head [mm] 166
  • Weight [kg] 0,14
  • Condition  New
Details
Bolt Kit, cylinder head 115,00mm (PAYEN, HBS018) -20%
original Bolt Kit, cylinder head PAYEN HBS018 Article №: HBS018
PAYEN Bolt Kit, cylinder head HBS018
£ 14,49**
£ 11,59
incl. 20% VAT, Shipping
Over 100 items in stock
  • Thread Size M12
  • Length [mm] 115,00
  • Bolt Head-/Nut Design Female Star
  • Quantity 10
  • Thread Pitch 1 [mm] 1,75
  • Condition  New
Details
Bolt Kit, cylinder head 153mm (CORTECO, 016281B) -20%
original Bolt Kit, cylinder head CORTECO 016281B Article №: 016281B
CORTECO Bolt Kit, cylinder head 016281B
£ 16,99**
£ 13,59
incl. 20% VAT, Shipping
Over 100 items in stock
  • Thread Size M10
  • Length [mm] 153
  • Bolt Head-/Nut Design Male Torx
  • Quantity 10
  • Thread Pitch 1 [mm] 1,25
  • Condition  New
Details
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*Applies to selected products. This percentage may be omitted, increased or decreased after the time indicated in the upper right-hand corner. It does not refer to a price that was actually charged previously, see **

**The amount crossed out is not a price that was actually charged previously, but is calculated in real time on the basis of our lowest current purchase price. It may therefore increase or decrease on a daily basis.