JE 371718 Piston Kit (3.228 in. Bore, 1.307 in. CH, -11.10 CC) for BMW B58B30 Engine

Description JE 371718 Piston Kit (3.228 in. Bore, 1.307 in. CH, -11.10 CC) for BMW B58B30 Engine

JE Pistons applies over 75 years of experience to its range of premium forged racing pistons for European, import, and sport compact applications.

Engineered, forged, and machined 100% in the USA, these pistons are Designed for each specific engine and racing application to provide durability and performance.

• Forged from 4032 aluminum for tensile strength and minimal thermal expansion
• Proprietary Forged Side Relief design minimizes friction and power loss while reducing skirt width, weight, and Wrist Pin length
• Application-dependent skirt coating reduces friction, piston skirt and cylinder Wall wear, and operating noise
• Application-dependent accumulator groove reduces combustion gas pressure and Piston Ring flutter while improving ring seal

Specifications:

• Piston Series: JE Pistons
• Bore Diameter: 3.228 IN
• Piston Head Type: Inv Dome/Dish
• Compression Height: 1.307 IN
• Piston Volume: -11.10 CC
• Piston Material: 2618
• Piston Quantity: 6
• Wrist Pin Material: 5115 Low Carbon Steel, Case Hardened
• Wrist Pin Outer Diameter: 0.866 IN
• Wrist Pin Length: 2.250 IN
• Wrist Pin Wall Thickness: 0.180 IN
• Intake Depth: .208 IN
• Intake Diameter: 1.325 IN
• Intake Angle: 20
• Exhaust Diameter: 1.260
• Exhaust Angle: 20
• Top Groove Width: 0.04800 IN
• 2nd Groove Width: 0.04800 IN
• Oil Groove Width: 0.07900 IN
• Product Type: Engine Piston Kit
• Product Market: European
• B58B30