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Enginetech Engine Expansion Plug Kits

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Enginetech offers engine expansion plug kits for a variety of car, truck, SUV, high performance, and marine applications. Machined from brass or steel, the kits inc
Enginetech offers engine expansion plug kits for a variety of car, truck, SUV, high performance, and marine applications. Machined from brass or steel, the kits include a variety of sizes to seal whatever ports need to be closed off. The plugs are produced in accordance with factory specs to ensure proper fit and performance. They meet or exceed OE quality standards. Order the kit recommended for your engine.

Expansion plugs (or freeze plugs) serve two primary purposes: to block coolant leaks from internal passages, and to protect the engine block from cracking if the coolant inside freezes and expands. The plugs
Enginetech offers engine expansion plug kits for a variety of car, truck, SUV, high performance, and marine applications. Machined from brass or steel, the kits include a variety of sizes to seal whatever ports need to be closed off. The plugs are produced in accordance with factory specs to ensure proper fit and performance. They meet or exceed OE quality standards. Order the kit recommended for your engine.

Expansion plugs (or freeze plugs) serve two primary purposes: to block coolant leaks from internal passages, and to protect the engine block from cracking if the coolant inside freezes and expands. The plugs are designed to "pop out" under the pressure of expanding ice, preventing more severe damage, like a cracked block.

Results 1 - 25 of 127

Engine Expansion Plug Kit 95-10 CHR/DOD/PLY 2.4L

Part Number: EGN-PK12B

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Engine Expansion Plug Kit 91-14 FRD/LIN/MER 4.6L

Part Number: EGN-PK13

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Engine Expansion Plug Kit 93-94 CHR/DOD 3.5L

Part Number: EGN-PK67B

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Engine Expansion Plug Kit 95-10 CHR/DOD/PLY 3.5L

Part Number: EGN-PK68

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Engine Expansion Plug Kit 95-10 CHR/DOD/PLY 3.5L

Part Number: EGN-PK68B

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Engine Expansion Plug Kit 88-03 BUI/CHV/OLD/PON 3.1L

Part Number: EGN-PK71B

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Engine Expansion Plug Kit 95-07 BUI/CHV/OLD/PON 3.8L

Part Number: EGN-PK72

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Engine Expansion Plug Kit 68-97 FRD/LIN/MER 3.9L/4.6L/4.9L/6.1L/7.0L/7.5L

Part Number: EGN-PK26B

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Engine Expansion Plug Kit 59-81 BUI/PON 4.3L/5.3L/5.7L/6.4L/6.6L/6.9L/7.0L/7.5L

Part Number: EGN-PK16

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Engine Expansion Plug Kit 81-94 FRD/MER 1.6L/1.9L

Part Number: EGN-PK27

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Engine Expansion Plug Kit 70-82 FRD/LIN/MER 5.8L/6.6L

Part Number: EGN-PK10

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Engine Expansion Plug Kit 55-03 CHR/DOD/JEP/PLY 3.7L/4.5L/4.9L/5.2L/5.6L/5.9L

Part Number: EGN-PK14B

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Engine Expansion Plug Kit 64-90 BUI/CAD/CHV/GM/GMC/OLD/PON 4.3L/4.4L/4.6L/4.9L/5.0L/5.4L/5.7L/6.6L/7.0L/7.5L

Part Number: EGN-PK25B

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Engine Expansion Plug Kit 70-80 CHV/GM/GMC/OLD/PON 4.3L/4.4L/5.0L/5.7L/6.6L

Part Number: EGN-PK2B

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Engine Expansion Plug Kit 82-04 AM General/CHV/GMC/Hummer 6.2L/6.5L

Part Number: EGN-PK59

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Engine Expansion Plug Kit 82-04 AM General/CHV/GMC/Hummer 6.2L/6.5L

Part Number: EGN-PK59B

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Engine Expansion Plug Kit 86-08 FRD/MAZ/MER 3.0L

Part Number: EGN-PK51

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Engine Expansion Plug Kit 86-08 FRD/MAZ/MER 3.0L

Part Number: EGN-PK51B

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Engine Expansion Plug Kit 82-88 CAD 4.1L

Part Number: EGN-PK55

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Engine Expansion Plug Kit 81-95 CHR/DOD/PLY 2.2L/2.5L

Part Number: EGN-PK56

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Engine Expansion Plug Kit 62-89 BUI/CHV/GMC/OLD/PON 3.2L/3.8L/4.1L/4.8L

Part Number: EGN-PK5

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Engine Expansion Plug Kit 59-75 International 4.2L/4.3L/4.4L/5.0L/5.6L/6.4L

Part Number: EGN-PK23B

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Engine Expansion Plug Kit 77-93 AMC/BUI/CHV/GMC/JEP/PON 2.5L

Part Number: EGN-PK42

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Engine Expansion Plug Kit 81-95 CHR/DOD/PLY 2.2L/2.5L

Part Number: EGN-PK56B

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Engine Expansion Plug Kit 84-94 FRD/MER 2.3L/2.5L

Part Number: EGN-PK58

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today