60 Sealed Power H345DCP Speed-Pro Digital Diamond Profile Hypereutectic Pistons Best Price ... Engine Piston / Sealed Power H345DCP; Sealed Power H345DCP Federal-Mogul H345dcp Cast Piston. The piston was H345NP. $19.49. In Stock. $19.49. Hypereutectic pistons are used in some original equipment engines. They are favored because of reduced scuffing, improved power, fuel economy and emissions. Online shopping for Hypereutectic - Pistons from a great selection at Automotive Store. JEEP 4.0L PISTONS+RINGS KIT. Add To Cart. Sealed Power is a Federal Mogul brand specialising in Pistons, Piston Rings and Engine Bearings, along with Sealed Power's brother company Speed Pro who are also a part of the Federal Mogul team producing similar products. Online shopping for Hypereutectic - Pistons from a great selection at Automotive Store. Sealed Power Hypereutectic Pistons are built to exacting tolerances and feature an aluminum casting with an anti-friction skirt coating that is highly resistant to scuffing and wear. Sealed Power H345DCP Federal-Mogul H345dcp Cast Piston Manufacturer: Sealed Power… by Sealed Power… This listing is for a set of six (6) +.030" bore size Sealed Power hypereutectic, coated skirt pistons and a cast steel ring set for 1996-2006 Jeep models with … Our rigidly controlled T-5 heat treat increases piston … A hypereutectic piston is an internal combustion engine piston cast using a hypereutectic alloy–that is, a metallic alloy which has a composition beyond the eutectic point. Hypereutectic pistons are made of an aluminum alloy which has much more silicon present than is soluble in aluminum at the operating temperature.Hypereutectic … 4500rpm and I did not hear any detonation.. but it must have been there. Sealed Power H884CP Cast Piston. Rings were E251K gap was .024" piston to wall was .003. The Sealed Power Piston sets we have are based on the original Chrysler designs, but with improvements due to modern manufacturing techniques ensuring a better piston, at a great … Sealed Power Hypereutectic Coated Skirt Piston Set of 6 compatible with 1996-2006 Jeep Cherokee/Wagoneer 4.0 4.0L 242 (+.030" 3.905" Bore size) 4.6 out of 5 stars 3 $120.60 $ 120 . All the rest of the pistons looked fine except for the dinks on top from all the debris of the grenaded piston. Hypereutectic Pistons (“H” Prefix) These exclusive Sealed Power pistons feature our high-strength FM244 alloy material with 16.5% silicon finely dispersed throughout the aluminum casting, making our Hypereutectic pistons highly resistant to scuffing, heat and wear. Hypereutectic 390 refers to a unique aluminum piston … Sealed Power Hypereutectic Pistons are built to exacting tolerances and feature an aluminum casting with an anti-friction skirt coating that is highly resistant to scuffing and wear. The Duroshield skirt helps improve fuel economy, doesn't require any additional clearance, extends piston … Together Sealed Power … 13 reviews. In 2015 I destroyed an engine with sealed power Hypereutectic pistons. The Duroshield skirt helps improve fuel economy, doesn't require any additional clearance, extends piston …