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Kohler 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 6387415S

Kohler Part # 6387415S Piston W/Rings Set (Std) 63 874 15-S

KIT, PISTON W/RING SET (STD) 63 874 15-S , 6387415S
Kohler Part # 6387415S Piston W/Rings Set (Std) 63 874 15-S  $195.00$232.97
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Kohler 6387414S

Kohler Part # 6387414S Piston W/Rings Set (+.25)

PISTON W/RING SET (+.25) 6387414S
Kohler Part # 6387414S Piston W/Rings Set (+.25)  $175.00$209.11
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Kohler 6387413S

Kohler Part # 6387413S Piston /With Ring Set (+.50)

PISTON /WITH RING SET (+.50) 6387413S
Kohler Part # 6387413S Piston /With Ring Set (+.50)  $185.00$209.11
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Kohler 6387410S

Kohler Part # 6387410S Piston W/Rings Set (Std)

PISTON W/RING SET (STD) 6387410S Replaces 6307410S
Kohler Part # 6387410S Piston W/Rings Set (Std)  $145.00$174.66
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Kohler 6387408S

Kohler Part # 6387408S Piston W/Rings Set (+0.25)

PISTON W/RING SET +0.25 6387408S Replaces 6307408S
Kohler Part # 6387408S Piston W/Rings Set (+0.25)  $132.00$159.63
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Kohler 6387407S

Kohler Part # 6387407S Piston W/Rings Set Std

PISTON W/RING SET STD 6387407S Replaces 6307407S  
Kohler Part # 6387407S Piston W/Rings Set Std  $88.91$104.60
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Kohler 6387406S

Kohler Part # 6387406S Piston W/Rings Set (+.50mm)

PISTON W/RING SET (+.50MM) 6387406S Replaces 6307403S
Kohler Part # 6387406S Piston W/Rings Set (+.50mm)  $210.00$245.00
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Kohler 6387405S

Kohler Part # 6387405S Piston W/Rings Set (+.25mm)

PISTON W/RING SET (+.25MM) 6387405S Replaces 6307402S
Kohler Part # 6387405S Piston W/Rings Set (+.25mm)  $210.00$245.00
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Kohler 6387404S

Kohler Part # 6387404S Piston W/Rings Set Std

PISTON W/RING SET STD 6387404S Replaces 6307401S, 6307404S, 6387401S
Kohler Part # 6387404S Piston W/Rings Set Std  $220.00$245.00
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Kohler 6387401S

Kohler Part # 6387401S Piston W/Rings Set Std 63 874 01-S

PISTON W/RING SET STD 63 874 01-S , 6387401S
Kohler Part # 6387401S Piston W/Rings Set Std 63 874 01-S  $210.00$239.00
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Kohler 6287419S

Kohler Part # 6287419S Piston W/ Ring Set .50 OS

Kohler Piston With Ring Set, .50 OS, 62 874 19-S
Kohler Part # 6287419S Piston W/ Ring Set .50 OS $125.84

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Kohler 6287418S

Kohler Part # 6287418S Piston W/ Ring Set .25 OS

Kohler Piston With Ring Set, .25 OS, 62 874 18-S   Engines before S/N 4308700011 must use new rod 62 067 13-S Replaces 6287406S
Kohler Part # 6287418S Piston W/ Ring Set .25 OS $124.35

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Kohler 6287417S

Kohler Part # 6287417S Piston W/ Ring Set Std

Kohler Piston With Ring Set, Standard Bore, 6287417-S. Replaces: 6287405-S Engines before S/N 4308700011 must use new rod 62 067 13-S. New style STD piston 62...
Kohler Part # 6287417S Piston W/ Ring Set Std  $105.00$124.35
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Kohler 6287407S

Kohler Part # 6287407S Piston W/Rings Set .50mm (.020)

KOHLER PISTON W/RING SET .50mm (.020) OVERSIZED
Kohler Part # 6287407S Piston W/Rings Set .50mm (.020)  $285.00$300.31
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Kohler 5287416S

Kohler Part # 5287416S Piston Kit W/ Ring Set Std

KOHLER PISTON KIT W/ RING SET STD 5287416 / 5287416S Standard Bore New Style, Mahle Replaces: 8207401 For KT19 II, M20, MV20
Kohler Part # 5287416S Piston Kit W/ Ring Set Std  $199.95$242.98
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Kohler 5287409S

Kohler Part # 5287409S Piston W/Rings .020

KOHLER ENGINE PISTON W/RINGS .020 5287409 / 5287409S Replaces: 5207435, 5207461, 5207475 Old Style Used on KT19
Kohler Part # 5287409S Piston W/Rings .020  $234.86$361.27
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Kohler 5287408S

Kohler Part # 5287408S Piston W/Rings .010

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, KT19 II
Kohler Part # 5287408S Piston W/Rings .010  $234.86$361.27
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Kohler 5287406S

Kohler Part # 5287406S Piston W/Rings Std

KOHLER ENGINE PISTON W/RINGS STD 5287406 / 5287406S Replaces: 5207432, 5207458, 5207472 Old Style Piston pin boss to boss 1.19" Used on KT19   Only one left...
Kohler Part # 5287406S Piston W/Rings Std  $243.22$253.35
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Kohler 5287405S

Kohler Part # 5287405S Piston W/Rings Set .030

KOHLER PISTON W/RINGS SET .030 5287405 Used on KT17 old style Replaces 5207443, 5207471
Kohler Part # 5287405S Piston W/Rings Set .030  $299.00$345.51
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Kohler 5287404S

Kohler Part # 5287404S Piston W/Rings Set .020

KOHLER PISTON W/RINGS SET .020 5287404 Used on KT17 old style Replaces 5207442, 5207470
Kohler Part # 5287404S Piston W/Rings Set .020  $208.75$345.16
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Kohler 5287403S

Kohler Part # 5287403S Piston W/Rings Set .010

PISTON W/RING SET .010 5287403S Replaces 5207403, 5207441, 5207469 Used in KT17 old style
Kohler Part # 5287403S Piston W/Rings Set .010  $265.00$356.02
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Kohler 5287401S

Kohler Part # 5287401S Piston Kit W/ Ring Set Std

KOHLER PISTON KIT W/ RING SET STD 5287401 / 5287401S STD Bore Replaces: 5207401, 5207415, 5207419, 5207439, 5207467 Use in KT17 old style
Kohler Part # 5287401S Piston Kit W/ Ring Set Std  $239.95$355.68
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Kohler 4987403S

Kohler Part # 4987403S Piston W/Rings Set .010

PISTON W/RING SET .010 4987403S
Kohler Part # 4987403S Piston W/Rings Set .010  $246.81$379.65
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Kohler 4987401S

Kohler Part # 4987401S Piston W/Rings Set .Std

PISTON W/RING SET STD 4987401
Kohler Part # 4987401S Piston W/Rings Set .Std  $246.81$379.65
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Kohler 4887410S

Kohler Part # 4887410S Piston W/Rings Set .030

PISTON W/RING SET .030 4887410S Old Style Piston Used in K582
Kohler Part # 4887410S Piston W/Rings Set .030  $242.89$268.19
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