MAHLE 930200030-1 Flat Top Piston 4.030 Bore Small Block Chevy 355ci (Single)

The MAHLE 930200030-1 is a high-performance flat top forged piston designed for Small Block Chevy 355ci engine builds. Manufactured from premium 4032 aluminum alloy, this piston delivers an excellent balance of strength, reduced expansion rates, and lightweight efficiency — making it ideal for both street performance and mild race applications.

With a 4.030-inch bore diameter, -5.0cc dish volume, and a calculated 10.4:1 compression ratio, this flat top piston is engineered for builders seeking reliable high-compression performance in a Small Block Chevy platform. The 0.927-inch wrist pin diameter and 5.700-inch rod length compatibility ensure precise fitment in a properly assembled rotating assembly.

Key Specifications:

• Engine Application: Small Block Chevy (SBC) 355ci
• Bore Diameter: 4.030 inches
• Compression Height: 1.550 inches
• Stroke Compatibility: 3.480 – 3.500 inches
• Rod Length: 5.700 inches
• Wrist Pin Diameter: 0.927 inches
• Dome/Dish Volume: -5.0cc (flat top)
• Piston Weight: 474 grams
• Compression Ratio: 10.4:1
• Alloy: 4032 aluminum
• Sold: Single piston (each)

MAHLE is a world-renowned OEM and performance piston manufacturer trusted by professional engine builders across motorsports and high-performance street applications. The 4032 alloy construction provides superior dimensional stability at operating temperatures, reduced piston-to-wall clearance requirements, and long service life. This piston is sold individually, allowing builders to purchase exactly the quantity needed for their project.