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Diamond Pistons Domestic Series Pistons
Ford Modular 5.8L DS 3.681B/1.315CD
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Estimated Ship Date: Dec 7, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
30804
Part Type:
Product Line:
Summit Racing Part Number:
DPP-30804
UPC:
193564393487
Piston Rings Included:
No
Bore (in.):
3.681 in.
Bore (mm):
93.497mm
Stroke:
4.165 in.
Engine Stroke Type:
Stock
Rod Length:
6.657 in.
Piston Style:
Dish, with four valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.315 in.
Piston Head Volume (cc):
+10.50cc
Wrist Pin Style:
Floating
Wrist Pin Retainers Included:
No
Wrist Pin Included:
No
Pin Diameter (in.):
0.866 in.
Piston Ring Thickness:
1.20mm x 1.50mm x 3.00mm
File Fit:
No
Gapless:
No
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Piston is 2618 material.
Diamond Pistons Domestic Series Pistons
Diamond Pistons Domestic Series pistons are designed and tested for the high-stresses seen with high-compression, forced induction, or nitrous-fed domestic engines. Engineered with longevity, reliability, and strength, these forged aluminum pistons are specifically designed for your engine to deliver the results you demand.
Diamond Piston Domestic Series pistons feature:
* 3D milling on piston crowns for "ready-to-install" finish
* Generous valve pockets designed to work with stock or oversized valves and various cylinder heads
* Constructed from forged 4032 or 2618 aluminum alloy (where specified)
* Premium 8620 or H-13 steel wrist pins (where specified)
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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