Mercedes Benz AMG M278 Forged Pistons and Forged Connecting Rods Kit

Product Specifications

Forged Connecting Rods:

• Material: 4340 Alloy
• Shape: H-Beam
• Bolt Size: 3/8″
• Length (C-C): 146.50mm
• Big End Diameter: 55.60mm
• Pin End Diameter: 24.00mm
• Big End Width: 19.95mm
• Wider pin end width to be Forged Piston guided.
• Set of 8

Forged Pistons:

• Material: 4032 Alloy
• Bore Dia.: 92.9mm
• Pin Size: 24.00mm
• Compression Ratio: OEM
• Compression Height: OEM
• Set of 8

Technical Features of Hench Performance Connecting Rods

• Two-Piece forging for great strength
• Shot Peening for improved fatigue life
• Bronze bushing with radial groove.
• Magnaflux Inspection guarantees that the consistency of the forged material meets our high-quality standard
• Multi Stages Heat Treatment for maximum strength, dimensional stability, and fatigue life.
• CNC machining for superior tolerances, precise as much as 0.005mm
• Optimal balancing for weight matched sets of ± 1gram

Technical Features of Hench Performance Forged Pistons

• Completely Phosphate Coated, increase Oil Adhesion for better lubrication.
• Moly Coated on skirt for reducing friction of piston and cylinder wall.
• Pin Oiling, for better lubrication of Piston Pins and significantly extend lifetime at super high temperature and rpm.
• Piston Guided.

Contains:

• Piston x 8
• Piston Pin x 8
• Pin Lock x 8
• Piston Ring x 8
• Connecting Rod x 8
• Bolt x 16

Application:

M278 4.7L V8 (4663cc) Bi-Turbocharged

• 2011–2017 S 500/S 550
• 2011–2014 CL 500/CL 550
• 2015–2017 S 500 Coupé/S 550 Coupé
• 2011–2018 CLS 500/CLS 550
• 2012–2020 SL 500/SL 550
• 2012–2014 E 500/E 550
• 2012–2014 ML 500/ML 550
• 2013–2014 GL 450
• 2013–2019 GL 500/GLS 500/GL 550/GLS 550