Piston for automobile

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Information - Piston

Engine piston: replacement and selection

When and why it is necessary to replace engine piston

The engine pistons have no specific lifetime limit. Usually, they are replaced in case of deformation, breakage, burning-out, wear of the mounting hole of the piston pin.

Appearance of piston defects is caused by the following: insufficient or low quality of lubrication, impacts of foreign objects (such as split-off part of the connecting rod, crankshaft or valve), hydraulic shock caused by ingress of water into the cylinders (for example, after driving through a deep puddle). Deformation of the pistons can occur due to usage of spare parts with excessive head height, or due to insufficient sealing of the cylinder head when doing major engine overhaul. Breakage can occur as a result of collision of the pistons with valves, when too high rotation speed of the crankshaft doesn’t allow to pull the valves back, and due to detonation in the cylinder.

Signs of components defects are pistons knocking, especially at engine warming up, and rattling sound of the warmed up engine.

The pistons are replaced in a set. Also, during their replacement you need to install new piston pins and rings. The connecting rods are also replaced if necessary. After all works finishing, you need to carefully use the engine for about 1,000 – 2,000 km, avoiding wheel slipping, high rpm and heavy loads transportation.

How to select piston

The pistons differ by production method, and can be die-cast or forged.

For production of the first type components high-pressure casting is used. The forged pistons are made by stamping method; they are more durable and less apt to heat expansion. As a rule, the forged pistons are installed in turbocharged engines. Their price, higher than that of the die-cast pistons, can be considered as their disadvantage.

The shape of the piston top (piston head top surface) depends on the type of the engine, on configuration and volume of the combustion chamber, location of the valves, aspects of fuel-air mixture supply into the chamber, and other factors. In gasoline engines the piston top is flat or with recesses responsible for full opening of the valves. There are combustion chambers made in piston tops of direct injection diesel engines. Their shape allows to provide better whirling and formation of mixture.

The components which are able to perform their functions for a long time, are produced by well-recommended manufacturers only. Kolbenschmidt, Mahle Original, Nural, IPSA, Et Engineteam and others are amongst them.

Select the components strictly for your engine. This will help to avoid incompatibility of the parts by diameter, length, compression height, weight and other factors, important for engine operation. Beside that, a high quality parts kit for the exact car will include the piston pins and bushes. Sometimes, a set of the piston rings can be added.

Piston at low cost: Top Spares

Piston (KOLBENSCHMIDT, 97482600) -28%
original Piston KOLBENSCHMIDT 97482600 Article №: 97482600
KOLBENSCHMIDT Piston 97482600
£ 109,49**
£ 78,83
incl. 20% VAT, Shipping
Over 100 items in stock
  • Bolt Ø [mm] 30
  • Bolt length [mm] 70
  • Component Number 60554, 60556, 60558
  • Quantity 3
  • Production Number 088705
  • Bore Ø [mm] 88,01
  • Compression Height [mm] 42,3
  • Length [mm] 72,3
  • Recess Depth 1 [mm] 14,1
  • Valve pocket depth 1 [mm] 2,3
  • Valve pocket depth 2 [mm] 1,9
  • Recess Diameter [mm] 46
  • Standard Size [STD]
  • Condition  New
Details
Piston (KOLBENSCHMIDT, 40251600) -28%
original Piston KOLBENSCHMIDT 40251600 Article №: 40251600
KOLBENSCHMIDT Piston 40251600
£ 103,49**
£ 74,51
incl. 20% VAT, Shipping
Over 100 items in stock
  • Bolt Ø [mm] 21
  • Bolt length [mm] 53
  • Component Number 63713, 63716, 63719
  • Quantity 3
  • Production Number 082236
  • Bore Ø [mm] 82,51
  • Compression Height [mm] 29,8
  • Length [mm] 55,98
  • Piston protrusion [mm] 5,7
  • Recess Depth 1 [mm] 4,75
  • Recess Diameter [mm] 67
  • Standard Size [STD]
  • Condition  New
Details
Piston with piston ring carrier, with cooling duct, for keystone connecting rod, with piston rings (ET ENGINETEAM, PM001200) -28%
original Piston ET ENGINETEAM PM001200 Article №: PM001200
ET ENGINETEAM Piston PM001200
£ 92,99**
£ 66,95
incl. 20% VAT, Shipping
Over 100 items in stock
  • Cylinder Bore [mm] 86,00
  • Standard Size [STD]
  • Compression Height [mm] 43,420
  • Recess Depth 1 [mm] 15,850
  • Recess Diameter [mm] 46,900
  • Length [mm] 69,820
  • Bolt Ø [mm] 30
  • Bolt length [mm] 66,85
  • Supplementary Article/Info 2 with piston ring carrier, with cooling duct, for keystone connecting rod
  • Supplementary Article/Supplementary Info with piston rings
  • Condition  New
Details
Piston with piston rings (ET ENGINETEAM, PM006800) -28%
original Piston ET ENGINETEAM PM006800 Article №: PM006800
ET ENGINETEAM Piston PM006800
£ 127,49**
£ 91,79
incl. 20% VAT, Shipping
Over 100 items in stock
  • Cylinder Bore [mm] 77
  • Standard Size [STD]
  • Bolt length [mm] 47,8
  • Pin Diameter [mm] 20
  • Compression Height [mm] 28,45
  • Recess Diameter [mm] 34,5
  • Length [mm] 50,15
  • Supplementary Article/Supplementary Info with piston rings
  • Condition  New
Details
Piston (KOLBENSCHMIDT, 40846600) -28%
original Piston KOLBENSCHMIDT 40846600 Article №: 40846600
KOLBENSCHMIDT Piston 40846600
£ 103,99**
£ 74,87
incl. 20% VAT, Shipping
Over 100 items in stock
  • Bolt Ø [mm] 19
  • Bolt length [mm] 54
  • Production Number 076212
  • Bore Ø [mm] 76,51
  • Compression Height [mm] 28,97
  • Length [mm] 49,97
  • Piston protrusion [mm] 2
  • Recess Depth 1 [mm] 4,57
  • Valve pocket depth 1 [mm] 4
  • Valve pocket depth 2 [mm] 1,3
  • Standard Size [STD]
  • Condition  New
Details
Piston with piston ring carrier, with cooling duct, for keystone connecting rod, with piston rings (ET ENGINETEAM, PM001250) -28%
original Piston ET ENGINETEAM PM001250 Article №: PM001250
ET ENGINETEAM Piston PM001250
£ 92,99**
£ 66,95
incl. 20% VAT, Shipping
Over 100 items in stock
  • Cylinder Bore [mm] 86,5
  • Oversize [mm] 0,5
  • Compression Height [mm] 43,420
  • Recess Depth 1 [mm] 15,850
  • Recess Diameter [mm] 46,900
  • Length [mm] 69,820
  • Bolt Ø [mm] 30
  • Bolt length [mm] 66,85
  • Supplementary Article/Info 2 with piston ring carrier, with cooling duct, for keystone connecting rod
  • Supplementary Article/Supplementary Info with piston rings
  • Condition  New
Details
Piston with piston rings, without cooling duct (MAHLE ORIGINAL, 034 75 02) -28%
original Piston MAHLE ORIGINAL 034 75 02 Article №: 034 75 02
MAHLE ORIGINAL Piston 034 75 02
£ 102,99**
£ 74,15
incl. 20% VAT, Shipping
Over 100 items in stock
  • Supplementary Article/Supplementary Info with piston rings
  • Cylinder Bore [mm] 81,51
  • Length [mm] 62,2
  • Compression Height [mm] 31,9
  • Recess Depth 1 [mm] 4,4
  • Top land height [mm] 6
  • Bolt Ø [mm] 20,0
  • Bolt length [mm] 57,0
  • Production Number 81 V 53
  • Supplementary Article/Info 2 without cooling duct
  • Component Number 2. NM 1,75, 3. DSF 3,0 Cr
  • Condition  New
Details
Piston with piston rings (IPSA, PI086500) -28%
original Piston IPSA PI086500 Article №: PI086500
IPSA Piston PI086500
£ 76,49**
£ 55,07
incl. 20% VAT, Shipping
Over 100 items in stock
  • Cylinder Bore [mm] 82,51
  • Standard Size [STD]
  • Bolt Ø [mm] 21
  • Bolt length [mm] 53
  • Total Length [mm] 49,97
  • Recess Depth 1 [mm] 1,45
  • Recess Depth 2 [mm] 4,21
  • Specification RC
  • Supplementary Article/Supplementary Info with piston rings
  • Condition  New
Details
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