Product Description
Michigan Motorsports LS Coolant Steam Vent Port Gaskets – Like GM #12551933
Set of 4 Seals | Fits Gen III LS Car & Truck Engines (Gasoline V8 Only)
Michigan Motorsports LS Coolant Steam Vent Port Gaskets are high-quality replacements comparable to GM part number 12551933. Designed for Gen III LS-based gasoline V8 engines, these gaskets properly seal the coolant steam vent ports between the cylinder heads and crossover tube. Sold as a set of four, they are ideal for head swaps, steam tube replacement, or routine maintenance. Precision molded for correct fitment, these seals help maintain proper coolant flow and prevent leaks at the steam vent connection points.
Key Features & Benefits
- Direct Replacement – Comparable to GM #12551933 for proper sealing of LS Gen III coolant steam vent ports.
- Designed for Gen III LS Engines – Fits LS-based car and truck gasoline V8 applications using the factory steam vent crossover system.
- Precision-Molded Seal Design – Ensures proper fitment at the steam vent ports to help prevent coolant seepage and maintain system integrity.
- Ideal for Head Swaps & Maintenance – Perfect when replacing cylinder heads, servicing crossover tubes, or refreshing the cooling system.
- Complete Set of Four – Includes four (4) steam vent port gaskets to service both cylinder heads.
Key Fitments (Gasoline V8 Models Only)
- BUICK RAINIER 2004
- CADILLAC CTS 2004-2005
- CADILLAC ESCALADE 2002-2005
- CHEVROLET AVALANCHE 1500 2002-2004
- CHEVROLET CAMARO 1997-2002
- CHEVROLET CORVETTE 1997-2004
- CHEVROLET EXPRESS 1500 2003-2005
- CHEVROLET EXPRESS 2500 2003-2005
- CHEVROLET EXPRESS 3500 2003-2005
- CHEVROLET SILVERADO 1500 1999-2004
- CHEVROLET SILVERADO 2500 1999-2004
- CHEVROLET SILVERADO 3500 2001-2004
- CHEVROLET SSR 2004
- CHEVROLET SUBURBAN 1500 2000-2004
- CHEVROLET SUBURBAN 2500 2000-2004
- CHEVROLET TAHOE 2000-2004
- CHEVROLET TILTMASTER 2003-2005
- CHEVROLET TRAILBLAZER 2003-2004
- GMC ENVOY 2003-2004
- GMC FORWARD 2003-2005
- GMC SAVANA 1500 2003-2005
- GMC SAVANA 2500 2003-2005
- GMC SAVANA 3500 2003-2005
- GMC SIERRA 1500 1999-2004
- GMC SIERRA 2500 1999-2004
- GMC SIERRA 3500 2001-2004
- GMC YUKON 2000-2004
- GMC YUKON XL 1500 2000-2004
- GMC YUKON XL 2500 2000-2004
- HUMMER H2 2003-2006
- ISUZU NPR 2003-2005
- PONTIAC FIREBIRD 1998-2002
- PONTIAC GTO 2004
