Specifications
- Brand
- Cometic Gasket
- Part #
- C4177-030
- UPC
- 191070002084

Cometic Nissan RB20/25 .030 inch MLS Exhaust Manifold Gasket 1.575 inch X 1.340 inch Port
$28.52
Cometic Gasket is known for well-built gaskets. This MLS exhaust manifold gasket is designed for extreme cylinder pressures.
Key Features
- Fits Nissan RB20DE, RB20DET, RB25DE, and RB25DET engines.
- Multi-Layer Steel (MLS) construction handles extreme cylinder pressures.
- Maintains torque settings and resists corrosion.
- Will not burn through or push out.
- Works with various cylinder head and exhaust manifold materials.
- Requires no sealants for installation.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
Cometic Gasket is known for making well-built gaskets that hold up under tough conditions. If you're working on a Nissan RB20DE, RB20DET, RB25DE, or RB25DET engine and need to replace your exhaust manifold gasket, this Multi-Layer Steel (MLS) option is a solid choice. It's specifically designed to handle high cylinder pressures, which is important for keeping your exhaust system sealed tight.
This gasket is built to maintain its torque setting and resist corrosion, meaning it won't burn through or get pushed out like some other types might. It's made to work with different combinations of cylinder head and exhaust manifold materials, and you won't need any extra sealants for installation, making the job a bit simpler. The ports measure 1.575 inches by 1.340 inches, and this gasket is .030 inches thick, which is an undersize fit.
Specifications
- Brand
- Cometic Gasket
- Manufacturer Part #
- C4177-030
- UPC
- 191070002084
Frequently Asked Questions
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Cometic Nissan RB20/25 .030 inch MLS Exhaust Manifold Gasket 1.575 inch X 1.340 inch Port

