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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 2487446S

Kohler Part # 2487446S Piston With Ring Set 77mm Std Bore Style A 624cc

Kohler Piston With Ring Set, 77mm, Std Bore, Style A, 624cc, 2487446S / 24 874 46-S Discontinued by Kohler. No longer available.
Kohler Part # 2487446S Piston With Ring Set 77mm Std Bore Style A 624cc

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Kohler 2487447S

Kohler Part # 2487447S Piston With Ring Set .08mm Oversized Style A 624cc

Kohler Piston With Ring Set, .08mm (.003) Oversized, Style A, 624cc, 2487447S / 24 874 47-S Discontinued by Kohler - No Longer Available  Replaces 2487414S,...
Kohler Part # 2487447S Piston With Ring Set .08mm Oversized Style A 624cc

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Kohler 2487448S

Kohler Part # 2487448S Piston With Ring Set .25mm Oversized Style A 624cc

Kohler Piston With Ring Set, .25mm (.010) Oversized, Style A, 624cc, 2487448S / 24 874 48-S Replaces: 2487402S, 27 874 02-S, 2487418S, 24 874 18-S,...
Kohler Part # 2487448S Piston With Ring Set .25mm Oversized Style A 624cc

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Kohler 2487449S

Kohler Part # 2487449S Piston With Ring Set .50mm Oversized Style A 624cc

Kohler Piston With Ring Set, .50mm (.020) Oversized, Style A, 624cc, 2487449S / 24 874 49-S, NLA Replaces: 2487403S, 24 874 03-S, 2487419S, 24 874 19-S,...
Kohler Part # 2487449S Piston With Ring Set .50mm Oversized Style A 624cc

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Kohler 2487455S

Kohler Part # 2487455S Piston Assembly W/Ring Set (Style B) .08mm OS 80mm

Kohler Piston With Rings Set, New Style B, 80mm Bore, 674cc, 1.2mm Top Ring Thickness, .08mm, .003 oversized, 24 874 55-S - 2487455-S  Replaces: 2487435,...
Kohler Part # 2487455S Piston Assembly W/Ring Set (Style B) .08mm OS 80mm

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Kohler 4587411S

Kohler Part # 4587411S Piston With Rings Set Std Mahle

Kohler Piston With Rings Set Std Mahle New Design 45 874 11-S Used K341, M16 engines Discontinued by Kohler, no longer available.  
Kohler Part # 4587411S Piston With Rings Set Std Mahle

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Kohler 4587415S

Kohler Part # 4587415S Piston W/Rings Set .030 New Style Mahle

PISTON W/RING SET .030 NEW STYLE MAHLE 4587415 / 4587415S This part has been discontinued by Kohler. No longer available.
Kohler Part # 4587415S Piston W/Rings Set .030 New Style Mahle

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Kohler 1487404S

Kohler Part # 1487404S Piston Kit

Piston Kit 1487404, 1487404S, 1487404-S, 14 874 04-S
Kohler Part # 1487404S Piston Kit  $32.00$37.17
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Kohler 1487406S

Kohler Part # 1487406S Piston Kit 14 874 06-S

Piston Kit 1487406S - 14 874 06-S
Kohler Part # 1487406S Piston Kit 14 874 06-S  $40.00$47.54
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Kohler 1787401S

Kohler Part # 1787401S Piston Kit

KIT, PISTON 17 874 01-S, 1787401-S, 1787401S, 1787401
Kohler Part # 1787401S Piston Kit  $40.00$47.56
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Kohler 1487408S

Kohler Part # 1487408S Piston And Rings Kit 14 874 08-S

Kohler Piston & Ring Kit 1487408S - 14 874 08-S
Kohler Part # 1487408S Piston And Rings Kit 14 874 08-S  $41.00$48.73
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Kohler 1487402S

Kohler Part # 1487402S Piston Kit

Piston Kit 1487402, 1487402S, 1487402-S, 14 874 02-S
Kohler Part # 1487402S Piston Kit  $45.00$53.76
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Kohler 1487405S

Kohler Part # 1487405S Piston With Ring Set

Piston Kit, 14 874 05-S , 1487405-S Replaces 1487401-S
Kohler Part # 1487405S Piston With Ring Set  $45.85$53.76
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Kohler 1487403S

Kohler Part # 1487403S Piston Kit 14 874 03-S

Piston Kit 14 874 03-S , 1487403S
Kohler Part # 1487403S Piston Kit 14 874 03-S  $55.00$61.45
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Kohler 1887402S

Kohler Part # 1887402S Piston Kit

KIT, PISTON 18 874 02-S, 1887402-S, 1887402S, 1887402 Replaces 1884101S
Kohler Part # 1887402S Piston Kit  $57.00$65.00
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Kohler 1787410S

Kohler Part # 1787410S Piston Kit

KIT, PISTON 17 874 10-S, 1787410-S, 1787410S, 1787410
Kohler Part # 1787410S Piston Kit  $58.00$71.00
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Kohler 1487407S

Kohler Part # 1487407S Piston Assembly (Service) 14 874 07-S

Piston Assembly (Service) 1487407S - 14 874 07-S
Kohler Part # 1487407S Piston Assembly (Service) 14 874 07-S  $50.00$59.45
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Kohler 2587421S

Kohler Part # 2587421S Piston & Rings Assembly Kit

KOHLER PISTON & RINGS ASSY KIT 2587421S - 25 874 21-S
Kohler Part # 2587421S Piston & Rings Assembly Kit  $65.00$75.98
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Kohler 2587422S

Kohler Part # 2587422S Piston & Rings Assembly Kit

KOHLER PISTON & RINGS ASSY KIT 2587422S - 25 874 22-S
Kohler Part # 2587422S Piston & Rings Assembly Kit  $65.00$75.98
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Kohler 2587423S

Kohler Part # 2587423S Piston & Rings Assembly Kit

KOHLER PISTON & RINGS ASSY KIT 2587423S - 25 874 23-S
Kohler Part # 2587423S Piston & Rings Assembly Kit  $65.00$75.98
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Kohler 1987404S

Kohler Part # 1987404S Kit, Piston Rings, Pin & Clip

Kohler Part # 1987404S Kit, Piston Rings, Pin & Clip
Kohler Part # 1987404S Kit, Piston Rings, Pin & Clip  $86.00$141.96
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Kohler 1787411S

Kohler Part # 1787411S Piston Kit

KIT, PISTON   Replaces 17 874 08-S, 1787408-S, 1787408S, 1787408    
Kohler Part # 1787411S Piston Kit  $92.00$113.00
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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 2487458S

Kohler Part # 2487458S Piston Assembly W/Ring Set (Style B) (Std)

Kohler Piston Assembly W/Ring Set (Style B) (Std)2487458S - 24 874 58-S Replaces 2487450S
Kohler Part # 2487458S Piston Assembly W/Ring Set (Style B) (Std)  $105.00$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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