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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 2487454S

Kohler Part # 2487454S Piston Assembly W/Ring Set (Style B) Std Bore 80mm 674cc

Kohler Piston With Ring Set, 2487454-S, Standard Bore, 80mm, 674cc, Style B, 1.2mm Top Ring Thickness, Free Shipping.  Replaces:1.5mm Top Ring Thickness,...
Kohler Part # 2487454S Piston Assembly W/Ring Set (Style B) Std Bore 80mm 674cc  $160.00$219.77
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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

... more info

Kohler 2487456S

Kohler Part # 2487456S Piston Assembly W/Ring Set (Style B) .25mm OS 80mm 674cc

Kohler Piston With Ring Set, 24 874 54-S, .25mm Oversize, 80mm, 674cc, Style B, 1.2mm Top Ring Thickness, 2487456-S - 24 874 56-S. Replaces Old Kohler Part...
Kohler Part # 2487456S Piston Assembly W/Ring Set (Style B) .25mm OS 80mm 674cc  $215.00$253.15
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Kohler 2487457S

Kohler Part # 2487457S Piston Assembly W/Ring Set (Style B) .50mm OS 80mm 674cc

KOHLER PISTON ASSEM W/RING SET (STYLE B) (.50) 2487457S - 24 874 57-S
Kohler Part # 2487457S Piston Assembly W/Ring Set (Style B) .50mm OS 80mm 674cc  $215.00$253.15
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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 2487459S

Kohler Part # 2487459S Piston Assembly W/Ring Set (Style B) (.08)

KOHLER PISTON ASSEM W/RING SET (STYLE B) (.08) 2487459S - 24 874 59-S
Kohler Part # 2487459S Piston Assembly W/Ring Set (Style B) (.08)  $110.00$124.35
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Kohler 2487460S

Kohler Part # 2487460S Piston Assembly W/Ring Set (Style B) (.25)

KOHLER PISTON ASSEM W/RING SET (STYLE B) (.25) 2487460S - 24 874 60-S
Kohler Part # 2487460S Piston Assembly W/Ring Set (Style B) (.25)  $110.00$124.35
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Kohler 2487461S

Kohler Part # 2487461S Piston Assembly W/Ring Set (Style B) (.50)

KOHLER PISTON ASSEM W/RING SET (STYLE B) (.50) 2487461S - 24 874 61-S
Kohler Part # 2487461S Piston Assembly W/Ring Set (Style B) (.50)  $110.00$124.35
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Kohler 2587407S

Kohler Part # 2587407S Piston W/Rings (.08 mm) 83 mm Style B

Piston Assembly With Rings, Pin and Clips, (.08mm) .003 Oversized, 83mm Bore, Style B, 1.2mm Top Thickness Ring, 25 874 07-S - 2587407-S. Uses Ring Set...
Kohler Part # 2587407S Piston W/Rings (.08 mm) 83 mm Style B  $179.00$207.83
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Kohler 2587408S

Kohler Part # 2587408S Piston W/Rings (0.50) 83mm

PISTON W/RING (0.50) 83mm 2587408S Replaces 32 874 15S, 3287415S, 3287415-S, 3287415S
Kohler Part # 2587408S Piston W/Rings (0.50) 83mm  $192.00$217.05
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Kohler 2587410S

Kohler Part # 2587410S Piston W/Rings (.08)

 PISTON W/RINGS (.08) 25 874 10-S , 2587410S
Kohler Part # 2587410S Piston W/Rings (.08)  $160.00$181.40
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Kohler 2587411S

Kohler Part # 2587411S Piston W/Rings (0.25)

 PISTON W/RINGS (0.25) 25 874 11-S , 2587411S Replaces 2487432S, 2487432
Kohler Part # 2587411S Piston W/Rings (0.25)  $200.00$222.00
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Kohler 2587412S

Kohler Part # 2587412S Piston W/Rings (0.50)

 PISTON W/RINGS (0.50) 25 874 12-S , 2587412S
Kohler Part # 2587412S Piston W/Rings (0.50)  $200.00$220.00
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Kohler 2587413S

Kohler Part # 2587413S Piston Assembly 725cc, (Std), 83 mm, Style B

Genuine Kohler Piston Assembly With Rings, Wrist Pin, Clips. Standard Bore 83mm, 67mm Stroke, 725cc, Style B, 1.2 mm Top Ring Thickness, 2587413-S Free...
Kohler Part # 2587413S Piston Assembly 725cc, (Std), 83 mm, Style B  $200.00$236.56
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Kohler 2587414S

Kohler Part # 2587414S Piston Assembly 747cc, (Std), 83 mm, Style B

Kohler Piston Kit, 83mm Bore, 747cc, 69mm Stroke, (Std Bore) Style B, 1.2mm Top Ring Thickness, 2587414S Replaces: 2487430S, 2587406S Includes: Piston, Rings,...
Kohler Part # 2587414S Piston Assembly 747cc, (Std), 83 mm, Style B  $135.00$152.65
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Kohler 2587415S

Kohler Part # 2587415S Piston Assembly With Ring (+.08 mm) 83 mm Style B

Kohler Piston Assembly With Rings, Wrist Pin, Clips .003" (.08 mm) Oversized For 83mm Bore Engine 725cc, Style B 1.2 mm Top Ring Thickness, 2587415-S
Kohler Part # 2587415S Piston Assembly With Ring (+.08 mm) 83 mm Style B  $200.00$229.11
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Kohler 2587416S

Kohler Part # 2587416S Piston Assembly With Ring (+.25 mm) 83 mm Style B

Kohler Piston Assembly With Rings, Wrist Pin, Clips, 2587416-S, 25 874 16-S, .010" (.25 mm) Oversized For 83mm Bore Engine 725cc, Style B 1.2 mm Top Ring...
Kohler Part # 2587416S Piston Assembly With Ring (+.25 mm) 83 mm Style B  $200.00$229.11
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Kohler 2587417S

Kohler Part # 2587417S Piston Assembly With Ring (+.50 mm) 83 mm Style B

Kohler Piston Assembly With Rings, Wrist Pin, Clips, 2587417-S, 25 874 17-S, .020" (.50 mm) Oversized, For 83 mm Bore Engine, 725cc, Style B, 1.2 mm Top Ring...
Kohler Part # 2587417S Piston Assembly With Ring (+.50 mm) 83 mm Style B  $200.00$229.11
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Kohler 2587418S

Kohler Part # 2587418S Piston Kit 747cc (+0.08)

KOHLER PISTON KIT 747CC (+0.08) 2587418S - 25 874 18-S
Kohler Part # 2587418S Piston Kit 747cc (+0.08)  $155.00$182.00
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Kohler 2587419S

Kohler Part # 2587419S Piston Kit 747cc (+0.25)

KOHLER PISTON KIT 747CC (+0.25) 2587419S - 25 874 19-S
Kohler Part # 2587419S Piston Kit 747cc (+0.25)  $185.00$221.54
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Kohler 2587420S

Kohler Part # 2587420S Piston Kit 747cc (+0.50)

KOHLER PISTON KIT 747CC (+0.50) 2587420S - 25 874 20-S
Kohler Part # 2587420S Piston Kit 747cc (+0.50)  $200.00$220.00
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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 4187401S

Kohler Part # 4187401S Piston W/Rings Set Std 2 7/8

PISTON W/RINGS SET STD 4187401S / 4187401 For 2 7/8 bore  Old Part Number 4107401
Kohler Part # 4187401S Piston W/Rings Set Std 2 7/8  $169.95$219.47
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