Enginetech Engine Expansion Plug Kits

5.0 out of 5 stars 1 Customer Reviews

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

5.0 out of 5 stars ( 1 )

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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: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK8B

Engine Expansion Plug Kit 65-96 FRD 3.9L/4.9L

Part Number: EGN-PK8B

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Enginetech Engine Expansion Plug Kits PK359

Engine Expansion Plug Kit 89-09 DOD 5.9L

Part Number: EGN-PK359

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 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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Enginetech Engine Expansion Plug Kits PK51B

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

Part Number: EGN-PK51B

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 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: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 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: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK114B

Engine Expansion Plug Kit 59-79 CHR/DOD/PLY 6.3L/6.6L/6.7L/6.8L/7.0L/7.2L

Part Number: EGN-PK114B

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 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: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK181B

Engine Expansion Plug Kit 83-02 AMC/DOD/EAG/JEP 2.5L

Part Number: EGN-PK181B

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 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: Nov 24, 2026 if ordered today

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Estimated Ship Date: Nov 24, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK59B

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

Part Number: EGN-PK59B

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Estimated Ship Date: Nov 24, 2026 if ordered today

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Estimated Ship Date: Nov 24, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK9B

Engine Expansion Plug Kit 62-01 FRD/LIN/MER 3.3L/3.6L/3.9L/4.2L/4.3L/4.6L/4.7L/4.9L/5.0L/5.8L

Part Number: EGN-PK9B

Not Yet Reviewed

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK23B

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: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Enginetech Engine Expansion Plug Kits for 1986-1990 BRONCO II, 1986-1992 RANGER, 1988-1989 SCORPIO - PK250B

Engine Expansion Plug Kit 86-92 FRD/MKR 2.9L

Part Number: EGN-PK250B

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK19B

Engine Expansion Plug Kit 75-95 BUI/CAD/CHV/GMC/OLD/PON 3.0L/3.2L/3.8L/4.1L

Part Number: EGN-PK19B

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK26B

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

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2026 if ordered today

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Estimated Ship Date: Nov 24, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK32

Engine Expansion Plug Kit 75-95 TOY 2.2L/2.4L

Part Number: EGN-PK32

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK114

Engine Expansion Plug Kit 59-79 CHR/DOD/PLY 6.3L/6.6L/6.7L/6.8L/7.0L/7.2L

Part Number: EGN-PK114

Not Yet Reviewed

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 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

Not Yet Reviewed

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK911

Engine Expansion Plug Kit 79-02 DOD/HYU/MIT/PLY 1.4L/1.5L

Part Number: EGN-PK911

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 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

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2026 if ordered today

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Estimated Ship Date: Nov 24, 2026 if ordered today

Enginetech Engine Expansion Plug Kits PK25B

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

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2026 if ordered today

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Estimated Ship Date: Nov 24, 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

Not Yet Reviewed

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

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