Enginetech PK1 is a steel freeze plug set (expansion plug set) for 1955-2002 Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac engines (4.3L-3.8L). Sold as a complete set covering all block expansion plug positions.
Product Specifications
| Part Number | PK1 |
| Brand | Enginetech |
| Product Type | Freeze Plug Set (Expansion Plug Set) |
| Material | Steel |
| Quantity | Sold as a complete set (1 set per order) |
| Application | 1955-2002 Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac |
| Engine | 4.3L-3.8L |
Vehicle Fitment
- 1955-1956 Chevrolet Corvette 4.3L 265ci V8 OHV
- 1955-1957 Chevrolet Bel Air 4.3L 265ci V8 OHV
- 1996-1999 GMC K1500 Suburban 5.7L 350ci V8 OHV [VIN:R]
- 1996-2000 Chevrolet K2500 5.7L 350ci V8 OHV [VIN:R]
- 1996-2000 Chevrolet Tahoe 5.7L 350ci V8 OHV [VIN:R]
- 1996-2000 GMC K2500 5.7L 350ci V8 OHV [VIN:R]
- 1996-2000 GMC Yukon 5.7L 350ci V8 OHV [VIN:R]
- 1996-2002 Chevrolet Express 1500 5.0L 305ci V8 OHV [VIN:M]
- 1996-2002 Chevrolet Express 1500 5.7L 350ci V8 OHV
- 1996-2002 Chevrolet Express 2500 5.0L 305ci V8 OHV [VIN:M]
- 1996-2002 Chevrolet Express 2500 5.7L 350ci V8 OHV
- 1996-2002 Chevrolet Express 3500 5.7L 350ci V8 OHV
- 1996-2002 GMC Savana 1500 5.0L 305ci V8 OHV [VIN:M]
- 1996-2002 GMC Savana 1500 5.7L 350ci V8 OHV [VIN:R]
- 1996-2002 GMC Savana 2500 5.0L 305ci V8 OHV [VIN:M]
- 1996-2002 GMC Savana 2500 5.7L 350ci V8 OHV
- 1996-2002 GMC Savana 3500 5.7L 350ci V8 OHV
- 1998 GMC K2500 5.0L 305ci V8 OHV [VIN:M]
- 1999-2000 Cadillac Escalade 5.7L 350ci V8 OHV [VIN:R]
Enginetech freeze plug sets (also known as expansion plugs core plugs or Welsh plugs) are produced using high quality cold-rolled steel with zinc plating for excellent corrosion resistance or brass for superior long-term protection in severe-duty and high-mileage applications. Enginetech offers a full selection including standard cup design reverse taper disc and deep cup styles. Always replace all expansion plugs during a complete engine rebuild - old plugs left in place are a common source of coolant leaks on rebuilt engines. Apply a thin coat of thread sealant or anaerobic gasket maker to the plug outer diameter before installation. Verify all plug diameters match your engine block before ordering.
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