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 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 PK51B

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

Part Number: EGN-PK51B

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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 PK167

Engine Expansion Plug Kit 98-10 CHR/DOD 2.7L

Part Number: EGN-PK167

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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 PK229A

Engine Expansion Plug Kit 80-03 FRD/International 6.8L/6.9L/7.3L

Part Number: EGN-PK229A

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 PK258