1973 Pistons & Piston Rings

Piston, Cast, Flat, 4.140 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Pontiac, V8, Each

Part Number: UEM-S1526-020

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Flat, 4.150 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Pontiac, V8, Each

Part Number: UEM-S1526-030

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Flat, 4.120 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Pontiac, V8, Each

Part Number: UEM-S1526-STD

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Flat, 3.950 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Small Block, Each

Part Number: UEM-S1278-040

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Hypereutectic, Dish, 4.060 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each

Part Number: UEM-S1279HC-060

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Dish, 3.440 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, L6, Each

Part Number: UEM-S1294-040

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Dish, 3.460 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, L6, Each

Part Number: UEM-S1294-060

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Dish, 3.430 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, L6, Each

Part Number: UEM-S1294-030

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Dish, 3.905 in. Bore, 3/32 in., 3/32 in., 3/16 in. Ring Grooves, GM, L6, Each

Part Number: UEM-S1429-030

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Dish, 3.915 in. Bore, 3/32 in., 3/32 in., 3/16 in. Ring Grooves, GM, L6, Each

Part Number: UEM-S1429-040

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Dish, 3.935 in. Bore, 3/32 in., 3/32 in., 3/16 in. Ring Grooves, GM, L6, Each

Part Number: UEM-S1429-060

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Dish, 3.895 in. Bore, 3/32 in., 3/32 in., 3/16 in. Ring Grooves, GM, L6, Each

Part Number: UEM-S1437-020

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Flat, 3.895 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Small Block, Each

Part Number: UEM-S1438-020

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Flat, 3.915 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Pontiac, V8, Each

Part Number: UEM-S1520-040

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Flat, 4.190 in. Bore, 5/64 in., 1/16 in., 3/16 in. Ring Grooves, Pontiac, V8, Each

Part Number: UEM-S1525-040

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Flat, 4.210 in. Bore, 5/64 in., 1/16 in., 3/16 in. Ring Grooves, Pontiac, V8, Each

Part Number: UEM-S1525-060

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Special Order

Piston, Cast, Flat, 4.160 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Pontiac, V8, Each

Part Number: UEM-S1526-040

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Special Order

Piston, Cast, Flat, 4.180 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Pontiac, V8, Each

Part Number: UEM-S1526-060

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Special Order

Piston, Cast, Flat, 4.382 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Big Block, Each

Part Number: UEM-S1274-040

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Flat, 4.340 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Big Block, Each

Part Number: UEM-S1276-020

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Piston, Cast, Flat, 4.350 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Big Block, Each

Part Number: UEM-S1276-030

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Special Order

Piston, Cast, Flat, 4.360 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Big Block, Each

Part Number: UEM-S1276-040

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Special Order

Piston, Cast, Flat, 3.930 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Small Block, Each

Part Number: UEM-S1278-020

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Special Order

Piston, Cast, Flat, 3.940 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Small Block, Each

Part Number: UEM-S1278-030

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Special Order

Piston, Hypereutectic, Dish, 4.020 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each

Part Number: UEM-S1279HC-020

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Estimated Ship Date: Apr 13, 2026 if ordered today

• Special Order