Availability
Pistons
Piston, Forged, Flat Top, 2-Valve Reliefs, 4.040 in. Bore, 3.480 in. Stroke, 6.000 in. Rod, 1.260 in. Compression, Chevy, Each
Part Number: JEP-138086S
Not Yet Reviewed
Estimated Ship Date: Mar 5, 2026 if ordered today
Estimated Ship Date: Mar 5, 2026 if ordered today
Piston and Ring Kit, FHR Forged, Flat, 4.040 in. Bore, Chevy, Small Block, Kit
Part Number: UEM-IC9931KTM040
Not Yet Reviewed
Estimated Ship Date: Mar 25, 2026 if ordered today
Estimated Ship Date: Mar 25, 2026 if ordered today
Pistons, Hypereutectic, Flat, 4.040 in. Bore, Ford, 351W, Set of 8
Part Number: UEM-KB124-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Flat, 4.040 in. Bore, Ford, Kit
Part Number: UEM-KB151KTM-040
Estimated Ship Date: Mar 25, 2026 if ordered today
Estimated Ship Date: Mar 25, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Chevy, Small Block, Kit
Part Number: UEM-KB155KTD-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Dish, 4.040 in. Bore, Chevy, Small Block, Kit
Part Number: UEM-KB102KTD-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Flat, 4.040 in. Bore, Ford, Small Block, Kit
Part Number: UEM-KB349KTD-040
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Piston and Ring Kit, Hypereutectic, Step Head, 4.040 in. Bore, Mopar, Small Block, Kit
Part Number: UEM-KB356KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Piston and Ring Seit, Hypereutectic, Dish, Two Valve Reliefs, 4.040 in. Bore, for 5.956 in. Connecting Rod, +27.50 cc Volume, Ford, 351W, Kit
Part Number: UEM-KB319KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 25, 2026 if ordered today
Estimated Ship Date: Mar 25, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Mopar, Small Block, Kit
Part Number: UEM-KB373KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 25, 2026 if ordered today
Estimated Ship Date: Mar 25, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Dish, 4.040 in. Bore, Ford, Small Block, Kit
Part Number: UEM-KB181KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Step Dish, 4.040 in. Bore, Mopar, Small Block, Kit
Part Number: UEM-KB362KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Chevy, Small Block, Kit
Part Number: UEM-KB302KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Piston and Ring Kit, Hypereutectic, Dish, 4.040 in. Bore, Ford, Cleveland, Kit
Part Number: UEM-KB148KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Piston/Ring Kit, Hypereutectic, Flat, 4.040 in. Bore, 5/64, 5/64, 3/16 in. Moly Rings, Ford, Small Block, Kit
Part Number: UEM-KB311KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Dish, 4.040 in. Bore, Chevy, Small Block, Kit
Part Number: UEM-KB197KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Pistons, Hypereutectic, Flat, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, GM, Set of 4
Part Number: UEM-3493HC-040
Not Yet Reviewed
Estimated Ship Date: Mar 25, 2026 if ordered today
Estimated Ship Date: Mar 25, 2026 if ordered today
Pistons, Hypereutectic, Flat, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Set of 8
Part Number: UEM-KB289-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Pistons, Hypereutectic, Quench Head 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Set of 8
Part Number: UEM-KB373-040
Not Yet Reviewed
Estimated Ship Date: Mar 25, 2026 if ordered today
Estimated Ship Date: Mar 25, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Ford, Small Block, Kit
Part Number: UEM-KB314KTM-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Pistons, Hypereutectic, Dish, 4.040 in. Bore, Ford, Set of 8
Part Number: UEM-KB303-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Pistons, Hypereutectic, Dish, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Set of 8
Part Number: UEM-KB158-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Pistons, Hypereutectic, Dish, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8
Part Number: UEM-KB192-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Pistons, Hypereutectic, Flat, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8
Part Number: UEM-KB311-040
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
Pistons, Hypereutectic, Flat, 4.040 in. Bore, Dodge, Plymouth, Set of 8
Part Number: UEM-KB243-STD
Not Yet Reviewed
Estimated Ship Date: Mar 26, 2026 if ordered today
Estimated Ship Date: Mar 26, 2026 if ordered today
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