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 PK1B

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

Part Number: EGN-PK1B

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 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 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK185

Engine Expansion Plug Kit 85-09 CHV/GMC/IZU/OLD/PON 4.3L

Part Number: EGN-PK185

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Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK64B

Engine Expansion Plug Kit 90-97 BUI/CHV/GMC/IZU/OLD/PON 2.2L

Part Number: EGN-PK64B

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Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 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

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK4B

Engine Expansion Plug Kit 91-00 BUI/CHV/GM/GMC/OLD/PON 4.3L/6.0L/7.0L/7.4L/L

Part Number: EGN-PK4B

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK64

Engine Expansion Plug Kit 90-97 BUI/CHV/GMC/IZU/OLD/PON 2.2L

Part Number: EGN-PK64

Not Yet Reviewed

Estimated Ship Date: Apr 16, 2026 if ordered today

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Estimated Ship Date: Apr 16, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK293B

Engine Expansion Plug Kit 99-17 BUI/CAD/CHV/GM/GMC/Hummer/IZU/PON/SAB 4.3L/5.3L/6.0L

Part Number: EGN-PK293B

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Enginetech Engine Expansion Plug Kits for 1998-2002 CAVALIER, 1998-2000 S10, 1998 SONOMA - PK74

Engine Expansion Plug Kit 98-03 CHV/GMC/IZU/PON 2.2L

Part Number: EGN-PK74

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK827

Engine Expansion Plug Kit 99-12 BUI/CAD/CHV/GMC/IZU/PON/SAB 4.8L/5.3L

Part Number: EGN-PK827

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

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