Mopar Small Block Cylinder Head Gasket 4.125 Bore — Fits SBM

SKU: BBKR_P4532158
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mopar

Mopar engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Mopar lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Superior Sealing for Small Block Mopar Engines

When you are building a Small Block Mopar (SBM), the cylinder head gasket is the most critical seal in the engine. The Mopar Cylinder Head Gasket is engineered to provide a robust, leak-free seal under high-compression conditions. Featuring a 4.125-inch bore and a 0.40-inch compression thickness, this gasket is designed to accommodate a variety of small block configurations while ensuring optimal combustion chamber sealing.

Technical Specifications and Benefits

  • Bore Size: 4.125 inches, ideal for standard and slightly over-bored SBM engines.
  • Compression Thickness: 0.40 inches to maintain proper quench and compression ratios.
  • Material: Rubber-coated steel construction for superior durability and heat resistance.
  • Application: Specifically designed for Small Block Mopar (A-Engine) platforms.
  • Performance: Excellent sealing properties to prevent coolant and oil leaks.

This head gasket is built to withstand the rigors of high-performance driving. The rubber-coated steel design ensures that the gasket conforms perfectly to the mating surfaces of the head and block, providing a reliable seal that prevents common failure points. Whether you are performing a top-end refresh or a full engine rebuild, using high-quality Mopar gaskets is the best way to ensure your engine remains sealed and powerful. Don't let a sub-par gasket compromise your hard work. Choose the reliability of genuine Mopar parts for your next build. Find everything you need for your engine project at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mopar

Mopar engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Mopar lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Superior Sealing for Small Block Mopar Engines

When you are building a Small Block Mopar (SBM), the cylinder head gasket is the most critical seal in the engine. The Mopar Cylinder Head Gasket is engineered to provide a robust, leak-free seal under high-compression conditions. Featuring a 4.125-inch bore and a 0.40-inch compression thickness, this gasket is designed to accommodate a variety of small block configurations while ensuring optimal combustion chamber sealing.

Technical Specifications and Benefits

  • Bore Size: 4.125 inches, ideal for standard and slightly over-bored SBM engines.
  • Compression Thickness: 0.40 inches to maintain proper quench and compression ratios.
  • Material: Rubber-coated steel construction for superior durability and heat resistance.
  • Application: Specifically designed for Small Block Mopar (A-Engine) platforms.
  • Performance: Excellent sealing properties to prevent coolant and oil leaks.

This head gasket is built to withstand the rigors of high-performance driving. The rubber-coated steel design ensures that the gasket conforms perfectly to the mating surfaces of the head and block, providing a reliable seal that prevents common failure points. Whether you are performing a top-end refresh or a full engine rebuild, using high-quality Mopar gaskets is the best way to ensure your engine remains sealed and powerful. Don't let a sub-par gasket compromise your hard work. Choose the reliability of genuine Mopar parts for your next build. Find everything you need for your engine project at GGCRACING.

Product Details

Product Description

About Mopar

Mopar engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Mopar lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Superior Sealing for Small Block Mopar Engines

When you are building a Small Block Mopar (SBM), the cylinder head gasket is the most critical seal in the engine. The Mopar Cylinder Head Gasket is engineered to provide a robust, leak-free seal under high-compression conditions. Featuring a 4.125-inch bore and a 0.40-inch compression thickness, this gasket is designed to accommodate a variety of small block configurations while ensuring optimal combustion chamber sealing.

Technical Specifications and Benefits

  • Bore Size: 4.125 inches, ideal for standard and slightly over-bored SBM engines.
  • Compression Thickness: 0.40 inches to maintain proper quench and compression ratios.
  • Material: Rubber-coated steel construction for superior durability and heat resistance.
  • Application: Specifically designed for Small Block Mopar (A-Engine) platforms.
  • Performance: Excellent sealing properties to prevent coolant and oil leaks.

This head gasket is built to withstand the rigors of high-performance driving. The rubber-coated steel design ensures that the gasket conforms perfectly to the mating surfaces of the head and block, providing a reliable seal that prevents common failure points. Whether you are performing a top-end refresh or a full engine rebuild, using high-quality Mopar gaskets is the best way to ensure your engine remains sealed and powerful. Don't let a sub-par gasket compromise your hard work. Choose the reliability of genuine Mopar parts for your next build. Find everything you need for your engine project at GGCRACING.

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