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

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Enginetech Engine Expansion Plug Kits PK14B

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: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK15B

Engine Expansion Plug Kit 97-14 FRD/LIN 4.6L/5.4L

Part Number: EGN-PK15B

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK18B

Engine Expansion Plug Kit 66-91 AMC/JEP 4.7L/5.0L/5.6L/5.9L/6.4L/6.6L

Part Number: EGN-PK18B

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Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK1

Engine Expansion Plug Kit 55-02 BUI/CAD/CHV/GMC/OLD/PON 3.3L/3.8L/4.3L/4.4L/4.6L/4.9L/5.0L/5.3L/5.7L

Part Number: EGN-PK1

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Estimated Ship Date: Apr 10, 2026 if ordered today

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Estimated Ship Date: Apr 10, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK912

Engine Expansion Plug Kit 86-01 TOY 2.0L/2.2L

Part Number: EGN-PK912

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK185B

Engine Expansion Plug Kit 85-14 CHV/GM/GMC/IZU/OLD/PON 4.3L

Part Number: EGN-PK185B

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK11

Engine Expansion Plug Kit 58-78 FRD/MER 5.8L/5.9L/6.4L/7.0L

Part Number: EGN-PK11

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK3B

Engine Expansion Plug Kit 65-90 BUI/CHV/GM/GMC/OLD/PON 4.3L/4.4L/4.6L/4.9L/5.0L/5.7L/6.0L/6.5L/6.6L/7.0L/7.4L/L

Part Number: EGN-PK3B

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK10B

Engine Expansion Plug Kit 70-82 FRD/LIN/MER 3.9L/4.9L/5.8L/6.6L

Part Number: EGN-PK10B

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK914

Engine Expansion Plug Kit 83-12 CHR/DOD/EAG/HYU/KIA/MIT/PLY 1.6L/1.8L/2.0L/2.4L/L

Part Number: EGN-PK914

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK926

Engine Expansion Plug Kit 84-04 INF/MER/NIS 3.0L/3.3L

Part Number: EGN-PK926

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK13B

Engine Expansion Plug Kit 91-14 FRD/LIN/MER 4.6L/4.9L

Part Number: EGN-PK13B

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK173

Engine Expansion Plug Kit 82-94 BUI/CHV/OLD/PON 1.8L/2.0L

Part Number: EGN-PK173

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK2B

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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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK256B

Engine Expansion Plug Kit 87-06 JEP 4.0L

Part Number: EGN-PK256B

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK254

Engine Expansion Plug Kit 87-06 CHR/DOD/HYU/MIT/PLY 2.5L/3.0L/3.5L

Part Number: EGN-PK254

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK21

Engine Expansion Plug Kit 68-84 CAD 6.0L/7.0L/7.7L/8.2L

Part Number: EGN-PK21

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK59

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

Part Number: EGN-PK59

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK58

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

Part Number: EGN-PK58

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK73B

Engine Expansion Plug Kit 88-94 FRD 7.3L

Part Number: EGN-PK73B

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits for 1998-2001 CAVALIER - PK74B

Engine Expansion Plug Kit 98-02 CHV/GMC/IZU/PON 2.2L

Part Number: EGN-PK74B

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Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK3

Engine Expansion Plug Kit 65-90 BUI/CHV/GMC/OLD/PON 6.0L/6.5L/6.6L/7.0L/7.4L/L

Part Number: EGN-PK3

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK936

Engine Expansion Plug Kit 04-10 FRD 6.0L

Part Number: EGN-PK936

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Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK278

Engine Expansion Plug Kit 90-11 FRD/MAZ/MER 4.0L

Part Number: EGN-PK278

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Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK278B

Engine Expansion Plug Kit 90-11 FRD/MAZ/MER 4.0L

Part Number: EGN-PK278B

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Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

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