Mr. Gasket
Steel Shim Head Gasket Fits 1965-1990 Chevrolet 396-454 Big Block 4.370 Inch Bore, .020 Inch Compressed Thickness Mr Gasket
SKU: M00S 1131G
Description
Part #: 1131G
Mr. Gasket Steel Shim Cylinder Head Gaskets are for high performance street machines, drag racing and oval track racing. With today's extreme compression ratios you need stronger more durable gaskets. Mr. Gasket steel shim gaskets are made from .020 inch steel shim stock which is thinner than most composite gaskets increasing engine compression. Stress formed embossments will seal the extreme cylinder pressure.
Features:
- Manufactured from .020" steel shim stock.
- Thinner than composition head gaskets - increases engine compression.
- Stress formed embossments seal extreme cylinder pressures.
- For high performance street, drag race and oval track use.
Head Gasket - Shim - 4.370 in Bore - 0.020 in Compression Thickness - Steel - Big Block Chevy - Each
Fitment
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Specifications
| Brand | Mr. Gasket |
| Part Number | M00S 1131G |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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