JEEP 4.0L/242 Pistons

Pistons, KB Performance, 3.785 in. Bore, Dish, 1.353 in. Compression Height, Press/Float Pin, 5/64 x 5/64 x 3/16 Ring Grooves, Jeep, Set of 6

Part Number: UEM-KB424C-STD

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Pistons, Hyper Coated, 390 Alloy, 3.905 in. Bore, 6.123 in. Rod, 3.895 in. Stroke, -27.5cc Dish, 1.353 in. Compression Height, Jeep, 4.0L, Set of 6

Part Number: UEM-KB424C-030

5.0 out of 5 stars ( 1 )

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Pistons, Hypereutectic, 3.895 in. Bore, 1.353 in. CH, Press/Floating Offset 0.931 in. Pins, with Locks, for Stroker Builds, Jeep, AMC L6, Set of 6

Part Number: UEM-KB424C-020

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Estimated Ship Date: Feb 24, 2026 if ordered today

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Pistons, Hypereutectic, Dish, 3.875 in. Bore, Jeep, L6, Set of 6

Part Number: SLP-H825CP

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Feb 6, 2026 if ordered today

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Piston - AMC, Jeep 150 (2.5L) Eng. (1983-93), 242 (4.0L) Engs. (1983-95)

Part Number: MAH-2242322

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Estimated Ship Date: Feb 6, 2026 if ordered today

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Piston - AMC, Jeep 150 (2.46L) Eng. (1983-93), 242 (4.0L) Engs. (1983-98)

Part Number: MAH-2242322030

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Estimated Ship Date: Feb 9, 2026 if ordered today

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Pistons, KB Performance, 3.845 in. Bore, Dish, 1.353 in. Compression Height, Press/Float Pin, 5/64 x 5/64 x 3/16 Ring Grooves, Jeep, Set of 6

Part Number: UEM-KB424C-060

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Estimated Ship Date: Feb 17, 2026 if ordered today

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