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Piston Kits

When selecting piston kits make sure you select the correct design on all K Series and Magnum engines.

 

There are 2 basic designs, the Old Style piston and the New Style (Mahle) piston. If you have the Old Style piston and you are Not replacing the rod you have to stay with the Old Style piston design.
If you want to upgrade to the better New Style (Mahle) piston you can but you have to also replace the rod with the New Style rod.
The Mahle style piston skirt profile was modified to provide a better fit within the cylinder bore. The ring channels were redesigned and the wrist pin was strengthened. A different connecting rod is required because of the extensive design changes.
Beware of shops selling the aftermarket "rebuild kits" more then likely these are imports. These parts in many cases will not inter-change with genuine Kohler parts, example aftermarket rings will not fit in genuine Kohler pistons. They are also selling the old style piston design, further they are also claiming "It's what the rebuilders use". In my 30 plus years in the power equipment industry I have never heard of the term "rebuilders" in the small engine business unless they may be referring to backyard mechanics that are using aftermarket internal engine parts. You may be saving in price but not Quality.




Manufacturer+ Model Item Name Product Image Price
Kohler 2587408S

2587408S PISTON W/RING (0.25) 83mm 25 874 08-S

2587408S PISTON W/RING (0.25) 83mm 25 874 08-S   Replaces 2587403
2587408S PISTON W/RING (0.25) 83mm 25 874 08-S $150.03  $135.03
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Kohler 1787406S

KIT, PISTON 17 874 06-S , 1787406S

KIT, PISTON 17 874 06-S , 1787406S
KIT, PISTON 17 874 06-S , 1787406S $59.71  $50.75
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Kohler 2587410S

KIT, PISTON 25 874 10-S , 2587410S

KIT, PISTON 25 874 10-S , 2587410S
KIT, PISTON 25 874 10-S , 2587410S $114.76  $103.28
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Kohler 2587411S

KIT, PISTON 25 874 11-S , 2587411S

KIT, PISTON 25 874 11-S , 2587411S
KIT, PISTON 25 874 11-S , 2587411S $145.06  $130.55
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Kohler 2587412S

KIT, PISTON 25 874 12-S , 2587412S

KIT, PISTON 25 874 12-S , 2587412S
KIT, PISTON 25 874 12-S , 2587412S $138.63  $124.77
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Kohler 2587413S

KIT, PISTON 25 874 13-S , 2587413S Replaces 2587401S, 25874105S

KIT, PISTON 25 874 13-S , 2587413S Replaces 2587401, 2587401S, 25 874 01, 2587405S, 25 874 05  
KIT, PISTON 25 874 13-S , 2587413S Replaces 2587401S, 25874105S $154.89  $131.65
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Kohler 1787407S

KIT, PISTON (0.25 O.S.) 17 874 07-S , 1787407S

KIT, PISTON (0.25 O.S.) 17 874 07-S , 1787407S
KIT, PISTON (0.25 O.S.) 17 874 07-S , 1787407S $62.66  $57.02
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Kohler 1787401S

KIT, PISTON 1787401S

KIT, PISTON 17 874 01-S, 1787401-S, 1787401S, 1787401
KIT, PISTON 1787401S $44.61  $37.92
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Kohler 1787404S

KIT, PISTON 1787404S

KIT, PISTON 17 874 04-S, 1787404-S, 1787404S, 1787404
KIT, PISTON 1787404S $61.80  $49.44
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Kohler 1787408S

KIT, PISTON 1787408S

KIT, PISTON 17 874 08-S, 1787408-S, 1787408S, 1787408
KIT, PISTON 1787408S $68.99  $58.64
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Kohler 1787410S

KIT, PISTON 1787410S

KIT, PISTON 17 874 10-S, 1787410-S, 1787410S, 1787410
KIT, PISTON 1787410S $42.89  $34.31
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Kohler 1887402S

KIT, PISTON 1887402S

KIT, PISTON 18 874 02-S, 1887402-S, 1887402S, 1887402
KIT, PISTON 1887402S $40.31  $38.29
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Kohler 2487450S

KIT, PISTON ASSEM W/RING SET ( 24 874 50-S , 2487450S

KIT, PISTON ASSEM W/RING SET ( 24 874 50-S , 2487450S
KIT, PISTON ASSEM W/RING SET ( 24 874 50-S , 2487450S $44.19  $40.21
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Kohler 2587406S

Kit, Piston Assy 25 874 06-S , 2587406S

Kit, Piston Assy 25 874 06-S , 2587406S
Kit, Piston Assy 25 874 06-S , 2587406S $96.56  $87.87
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Kohler 1887401S

KIT, PISTON STD 1887401S

KIT, PISTON STD 18 874 01-S, 1887401-S, 1887401S, 1887401
KIT, PISTON STD 1887401S $38.95  $35.06
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Kohler 2087406S

KIT, PISTON W/ RINGS (84mm) 20 874 06-S , 2087406S

KIT, PISTON W/ RINGS (84mm) 20 874 06-S , 2087406S
KIT, PISTON W/ RINGS (84mm) 20 874 06-S , 2087406S $62.53  $53.15
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Kohler 2587407S

KIT, PISTON W/RING SET (.08) 25 874 07-S , 2587407S

KIT, PISTON W/RING SET (.08) 25 874 07-S , 2587407S
KIT, PISTON W/RING SET (.08) 25 874 07-S , 2587407S $144.96  $130.46
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Kohler 6387415S

KIT, PISTON W/RING SET (STD) 63 874 15-S , 6387415S

KIT, PISTON W/RING SET (STD) 63 874 15-S , 6387415S
KIT, PISTON W/RING SET (STD) 63 874 15-S , 6387415S $139.69  $118.74
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Kohler 1587401S

KIT, PISTON W/RING SET STD. 15 874 01-S , 1587401S

KIT, PISTON W/RING SET STD. 15 874 01-S , 1587401S
KIT, PISTON W/RING SET STD. 15 874 01-S , 1587401S $115.95  $104.36
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Kohler 2087416S

KIT, PISTON,RINGS & PIN ASSY 9 20 874 16-S , 2087416S

KIT, PISTON,RINGS & PIN ASSY 9 20 874 16-S , 2087416S Replaces 2087415S
KIT, PISTON,RINGS & PIN ASSY 9 20 874 16-S , 2087416S $62.53  $53.15
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Kohler 2587409S

KIT,PISTON W/RING (0.50) 83mm 25 874 09-S , 2587409S

KIT,PISTON W/RING (0.50) 83mm 25 874 09-S , 2587409S
KIT,PISTON W/RING (0.50) 83mm 25 874 09-S , 2587409S $150.03  $135.03
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Kohler 5287408S

KOHLER ENGINE PISTON W/RINGS .010 5287408

KOHLER ENGINE PISTON KIT W/RINGS .010 5287408 / 5287408S Replaces: 5207434, 5207460, 5207474 Old Style Piston pin boss to boss 1.19" Used on KT19,...
KOHLER ENGINE PISTON W/RINGS .010 5287408 $227.63  $218.52
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Kohler 5287409S

KOHLER ENGINE PISTON W/RINGS .020 5287409

KOHLER ENGINE PISTON W/RINGS .020 5287409 / 5287409S Replaces: 5207435, 5207461, 5207475 Old Style Used on KT19
KOHLER ENGINE PISTON W/RINGS .020 5287409 $227.63  $218.52
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Kohler 1287411S

KOHLER ENGINE PISTON W/RINGS .08 1287411

KOHLER ENGINE PISTON W/RINGS .08 1287411
KOHLER ENGINE PISTON W/RINGS .08 1287411 $93.45  $88.78
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Kohler 1287409S

KOHLER ENGINE PISTON W/RINGS .50 1287409

KOHLER ENGINE PISTON W/RINGS .50 1287409 / 1287409S
KOHLER ENGINE PISTON W/RINGS .50 1287409 $123.05  $110.75
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