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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.

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Best goods: Piston

Piston NÜRAL 87-427700-50
-21%
Car Piston 87-427700-50
Article №: 87-427700-50
NÜRAL Piston 87-427700-50
£ 89,49**
£ 70,70
incl. 20% VAT, excl. delivery costs
  • Length [mm]: 74,82
  • Height [mm]: 74,82
  • Cylinder Bore [mm]: 86,00
  • Machined: with cut-out for oil jet
  • Bolt Ø [mm]: 30
  • Supplementary Article/Info 2: with cooling duct, with piston ring carrier, for keystone connecting rod
  • Component Number: 08-427700-00
  • Production Number: 08683-607
  • Compression Height [mm]: 48,420
  • Recess Diameter [mm]: 49,040
  • Bolt length [mm]: 67
  • Recess Depth 1 [mm]: 16,170
  • Standard Size [STD]
  • Piston Clearance [mm]: 0,050
  • Condition: New
Details
Over 100 items in stock
Piston MAHLE ORIGINAL 029 82 00
-21%
Car Engine piston 029 82 00
Article №: 029 82 00
MAHLE ORIGINAL Piston 029 82 00
£ 68,49**
£ 54,11
incl. 20% VAT, excl. delivery costs
  • Standard Size [STD]
  • Cylinder Bore [mm]: 79,51
  • Length [mm]: 66
  • Compression Height [mm]: 39,65
  • Recess Depth 1 [mm]: 1,9
  • Recess Diameter [mm]: 26,5
  • Bolt length [mm]: 64,0
  • Bolt Ø [mm]: 24,0
  • Machined: with cut-out for oil jet
  • Supplementary Article/Info 2: with piston ring carrier, without cooling duct
  • Top land height [mm]: 11,1
  • Connecting Rod Design: Trapezoidal Connecting Rod
  • Production Number: 79 V 97
  • Component Number: 1. R 1.75 Cr P, 2.M2.0 IFU Cr P, 3. DSF 3.0 Cr
  • Piston Clearance [mm]: 0,03
  • Packaging length [cm]: 10,0
  • Packaging width [cm]: 10,00
  • Packaging height [cm]: 13,80
  • Net Weight [g]: 675,0
  • Condition: New
Details
Over 100 items in stock
Piston ET ENGINETEAM PM004700
-21%
Car Piston PM004700
Article №: PM004700
ET ENGINETEAM Piston PM004700
£ 121,49**
£ 95,98
incl. 20% VAT, excl. delivery costs
  • Cylinder Bore [mm]: 86
  • Standard Size [STD]
  • Compression Height [mm]: 48,42
  • Recess Depth 1 [mm]: 16,2
  • Recess Diameter [mm]: 49
  • Bolt Ø [mm]: 30
  • Bolt length [mm]: 66,75
  • Supplementary Article/Info 2: with piston ring carrier, with cooling duct
  • Supplementary Article/Supplementary Info: with piston rings
  • Condition: New
Details
Over 100 items in stock
Piston DR.MOTOR AUTOMOTIVE DRM21605
-21%
Car Engine piston DRM21605
Article №: DRM21605
DR.MOTOR AUTOMOTIVE Piston DRM21605
£ 61,99**
£ 48,97
incl. 20% VAT, excl. delivery costs
  • Compression Height [mm]: 29,12
  • Bolt length [mm]: 52
  • Recess Depth 1 [mm]: 5,6
  • Valve pocket depth 1 [mm]: 3,8
  • Valve pocket depth 2 [mm]: 1,1
  • Length [mm]: 50,12
  • Bore Ø [mm]: 76,51
  • Condition: New
Details
Over 100 items in stock
Piston KOLBENSCHMIDT 41198600
-21%
Car Piston 41198600
Article №: 41198600
KOLBENSCHMIDT Piston 41198600
£ 125,99**
£ 99,53
incl. 20% VAT, excl. delivery costs
  • Bolt Ø [mm]: 23
  • Bolt length [mm]: 53
  • Component Number: 66002, 66003, 66318
  • Quantity: 3
  • Production Number: 082316
  • Cylinder Piston Diameter [mm]: 82,51
  • Compression Height [mm]: 29,6
  • Length [mm]: 50,1
  • Recess Depth 1 [mm]: 6,2
  • Standard Size [STD]
  • Condition: New
Details
Over 100 items in stock
Piston NÜRAL 87-114400-60
-21%
Car Engine piston 87-114400-60
Article №: 87-114400-60
NÜRAL Piston 87-114400-60
£ 156,49**
£ 123,63
incl. 20% VAT, excl. delivery costs
  • Length [mm]: 70,37
  • Height [mm]: 70,37
  • Cylinder Bore [mm]: 84,00
  • Machined: with cut-out for oil jet
  • Bolt Ø [mm]: 30
  • Supplementary Article/Info 2: with cooling duct, with piston ring carrier, for keystone connecting rod
  • Component Number: 08-114400-40
  • Production Number: 08487 E103
  • Compression Height [mm]: 44,870
  • Recess Diameter [mm]: 47,500
  • Bolt length [mm]: 66
  • Recess Depth 1 [mm]: 14,500
  • Valve pocket depth 1 [mm]: 1,480
  • Standard Size [STD]
  • Piston Clearance [mm]: 0,055
  • Condition: New
Details
Over 100 items in stock
Piston IPSA PI075500
-21%
Car Piston PI075500
Article №: PI075500
IPSA Piston PI075500
£ 83,99**
£ 66,35
incl. 20% VAT, excl. delivery costs
  • Cylinder Bore [mm]: 76,51
  • Standard Size [STD]
  • Length [mm]: 49,97
  • Compression Height [mm]: 28,97
  • Recess Depth 1 [mm]: -4,57
  • Bolt Ø [mm]: 19,0
  • Bolt length [mm]: 54
  • Specification: RC
  • Supplementary Article/Supplementary Info: with piston rings
  • Condition: New
Details
Over 100 items in stock
Piston ET ENGINETEAM PM001250
-21%
Car Engine piston PM001250
Article №: PM001250
ET ENGINETEAM Piston PM001250
£ 99,49**
£ 78,60
incl. 20% VAT, excl. delivery costs
  • 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
  • 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
Over 100 items in stock
Piston MAHLE ORIGINAL 016 02 00
-21%
Car Piston 016 02 00
Article №: 016 02 00
MAHLE ORIGINAL Piston 016 02 00
£ 137,99**
£ 109,01
incl. 20% VAT, excl. delivery costs
  • Cylinder Bore [mm]: 82,5
  • Length [mm]: 71
  • Compression Height [mm]: 45,65
  • Recess Depth 1 [mm]: 12,4
  • Recess Diameter [mm]: 45,2
  • Bolt length [mm]: 66
  • Bolt Ø [mm]: 28
  • Surface: Coated
  • Supplementary Article/Info 2: with piston ring carrier, with cooling duct
  • Top land height [mm]: 8
  • Connecting Rod Design: Trapezoidal Connecting Rod
  • Production Number: 82 L 179
  • Component Number: 1. R 1.75 IF N, 2. NM 2 IFU P, 3. DSF 2 N
  • Piston Clearance [mm]: 0,06
  • Packaging length [cm]: 10,0
  • Packaging width [cm]: 10,00
  • Packaging height [cm]: 13,80
  • Net Weight [g]: 785,0
  • Condition: New
Details
Over 100 items in stock
Piston KOLBENSCHMIDT 40846600
-21%
Car Engine piston 40846600
Article №: 40846600
KOLBENSCHMIDT Piston 40846600
£ 203,49**
£ 160,76
incl. 20% VAT, excl. delivery costs
  • Bolt Ø [mm]: 19
  • Bolt length [mm]: 54
  • Production Number: 076212
  • Cylinder Piston Diameter [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
Over 100 items in stock
Piston ET ENGINETEAM PM006850
-21%
Car Piston PM006850
Article №: PM006850
ET ENGINETEAM Piston PM006850
£ 136,49**
£ 107,83
incl. 20% VAT, excl. delivery costs
  • Cylinder Bore [mm]: 77,5
  • Bolt length [mm]: 47,8
  • Bolt Ø [mm]: 20
  • Compression Height [mm]: 28,45
  • Recess Diameter [mm]: 34,5
  • Oversize [mm]: 0,50
  • Supplementary Article/Supplementary Info: with piston rings
  • Condition: New
Details
Over 100 items in stock
Piston KOLBENSCHMIDT 41765600
-21%
Car Engine piston 41765600
Article №: 41765600
KOLBENSCHMIDT Piston 41765600
£ 131,99**
£ 104,27
incl. 20% VAT, excl. delivery costs
  • Bolt Ø [mm]: 30
  • Bolt length [mm]: 66,85
  • Component Number: 63266, 65891, 65893
  • Quantity: 3
  • Production Number: 086218
  • Cylinder Piston Diameter [mm]: 86
  • Compression Height [mm]: 48,42
  • Length [mm]: 74,8
  • Recess Depth 1 [mm]: 16,17
  • Recess Diameter [mm]: 49
  • Standard Size [STD]
  • Condition: New
Details
Over 100 items in stock
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