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PISTONS

This category features carefully selected Komatsu aftermarket pistons from WQParts. Every component is chosen to deliver consistent fit, durability, and performance in tough working conditions. Whether you are rebuilding a specific system or refreshing high‑wear components, our Komatsu replacement parts help you reduce downtime without sacrificing quality or safety.

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6128-31-2121 Piston - Fits Komatsu Equipment
$326.50
Komatsu 6128-31-2121 Piston
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6128-31-2122 Piston - Fits Komatsu Equipment
$326.50
Komatsu 6128-31-2122 Piston
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6128-31-A140 Piston - Fits Komatsu Equipment
$326.50
Komatsu 6128-31-A140 Piston
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07157-01109 U-Packing, Piston - Fits Komatsu Equipment
$44.28
Komatsu 07157-01109 Packing
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07161-10061 Ring, Piston - Fits Komatsu Equipment
$37.91
Komatsu 07161-10061 Piston R
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130-63-12121 Rod, Piston - Fits Komatsu Equipment
$796.86
Komatsu 130-63-12121 Piston Rod
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130-63-12123 Rod, Piston - Fits Komatsu Equipment
$796.86
Komatsu 130-63-12123 Piston Rod
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1259498H2 O-Ring, Piston Id - Fits Komatsu Equipment
$25.51
Komatsu 1259498H2 O-Ring
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1259499H2 O-Ring, Piston Od - Fits Komatsu Equipment
$24.57
Komatsu 1259499H2 O-rings
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1294774H91 Kit, Engine Piston Std - Fits Komatsu Equipment
$185.73
Komatsu 1294774H91 Kit,Eng Pis