Sealed 8KH423DCP 30 piston set for the 1969-1985 Chevrolet Impala V8 5.7L and other vehicles carries combustion force to the connecting rods. The pistons are 0.030 inch oversize and have recessed heads.
- Hypereutectic pistons made with exclusive FM425 material for strength and scuff resistance
- FM425 material allows a tighter bore and improves sealing for less blow-by
- "Barrel" skirt profiles help optimize the oil wedge between skirt and wall
- Piston skirts have a DUROSHIELD® coating
- TAC™ ring groove geometry, with pistons weight matched to +/- 2 grams
Quick facts
- Part: Sealed 8KH423DCP 30 piston set
- Also called: engine piston set
- Fits: 1969-1985 Chevrolet Impala V8 5.7L and other vehicles
- Material: Hypereutectic
- Condition: New
Oil use, blue exhaust smoke or a knock from the cylinders can go with worn pistons, but they can have other causes too. With the engine off and cool, look at the cylinder walls for scoring and measure the bores against the 4.0000-inch bore diameter before you replace the pistons.
Fits
The 1969-1985 Chevrolet Impala V8 5.7L, the 1978-1981 Chevrolet Malibu V8 5.7L and the 1967-1981 Chevrolet Camaro V8 5.7L each take one set, as do many other Chevrolet, GMC, Buick, Cadillac, Oldsmobile and Pontiac models. If your car isn't named here, look up its years and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Bore diameter: 4.0000 in
- Oversize: 0.030 in
- Compression height: 1.560 in
- Top compression ring thickness: 0.0781 in
- Second compression ring thickness: 0.0781 in
- Oil ring thickness: 0.1875 in
- Quantity per vehicle: 1 set
Build and materials
- Piston material: Hypereutectic
- Piston head type: Recessed
- Skirt coating: DUROSHIELD®
- Condition: New
- Country of origin: India
In the box
One piston set. Assembly lubricant is not included.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does the Sealed 8KH423DCP 30 fit a 1969-1985 Chevrolet Impala V8 5.7L?
Yes, Sealed 8KH423DCP 30 fits the 1969-1985 Chevrolet Impala V8 5.7L and takes one set. For a different car, look up its years and engine in the "Vehicles it fits" section.
Is assembly lubricant included with this piston set?
No, Sealed 8KH423DCP 30 comes without assembly lubricant. The listing is one piston set.
Is this engine piston set oversized?
Yes. The pistons are 0.030 inch oversize, with a 4.0000-inch bore diameter and a 1.560-inch compression height.
What is the DUROSHIELD coating on these pistons?
DUROSHIELD® is the coating on the piston skirts of this set. The skirts also have "barrel" profiles that help optimize the oil wedge between skirt and wall.
Are the pistons in this set weight matched?
Yes, the pistons are weight matched to +/- 2 grams. Their ring grooves use TAC™ geometry.
