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Wiseco Forged Pistons 6373RA55

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Piston, Forged, Flat, 4.375 in. Bore, Chrysler, Dodge, Plymouth, Jensen, Each

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Brand: Wiseco
Manufacturer's Part Number: 6373RA55
Part Type: Pistons
Product Line: Wiseco Forged Pistons
Summit Racing Part Number: WIS-6373RA55

Bore (in): 4.375 in.
Bore (mm): 111.125mm
Piston Style: Flat top, with two valve reliefs
Piston Material: Forged aluminum
Compression Distance (in): 2.060 in.
Piston Head Volume (cc): +4.80cc
Wrist Pin Style: Press-fit or floating
Pin Diameter (in): 0.990 in.
Piston Ring Thickness: 1/16 in. x 1/16 in. x 3/16 in.
Quantity: Sold individually.
Notes: Replacement for 2, 3, 6 or 7-cylinder only.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Wiseco has built pistons for most major forms of motorsports, from off-road to rally, Formula 1 to drag racing. So, their pistons benefit from some heavy-duty engineering experience. For maximum strength, they're forged from either 2168 or 4032 aluminum alloy, and then precision CNC-machined to their intricate final configurations under close tolerances. Where applicable, designs incorporate strength provisions to deal with turbocharging, supercharging, and nitrous. chromoly wrist pins and Spirolox retainers are included.


Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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