This genuine GM exhaust manifold gasket (Part No. 88890561) is designed to create a secure seal between the exhaust manifold and cylinder head on compatible 4.2L 6-cylinder engines. It helps prevent exhaust leaks, maintains proper engine performance, and supports efficient exhaust flow.
Manufactured to OEM specifications, this gasket is engineered to withstand high temperatures, pressure fluctuations, and harsh operating conditions commonly found in exhaust systems. Its precision design ensures proper fitment and reliable sealing performance.
Ideal for exhaust system repairs, manifold replacement, or engine maintenance, this genuine GM gasket helps restore factory performance and reduce the risk of exhaust-related issues.
Key Features
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Precision Fit Design: Engineered for accurate installation and proper manifold alignment.
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High-Temperature Resistance: Built to withstand extreme exhaust heat and thermal cycling conditions.
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Ideal Repair Component: Suitable for manifold service, gasket replacement, and engine maintenance projects.
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Reliable Exhaust Seal: Helps prevent exhaust gas leaks between the cylinder head and exhaust manifold assembly.
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Supports Engine Efficiency: Maintains correct exhaust flow for optimal engine operation and emissions performance.
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4.2L Engine Application: Designed for compatible GM 4.2L 6-cylinder engine platforms including TrailBlazer and Envoy models.
- Genuine GM OEM Part: Manufactured to original equipment specifications for dependable fit, sealing performance, and long-term durability.
Specifications
- Brand: GM Genuine Parts
- Part Number: 88890561
- Product Type: Exhaust Manifold Gasket
- Engine Compatibility: 4.2L 6-Cylinder
- Vehicle Applications: Chevrolet TrailBlazer, GMC Envoy and compatible models



