Sealed Power H345DCP 40 engine piston for the 1982-1985 Chevrolet Impala V8 5.7L and other vehicles transfers combustion force to the connecting rod. This piston is 0.040 inch oversize for a 4.040-inch bore.
- Hypereutectic piston material with exclusive FM425 for excellent strength and scuff resistance
- FM425 material allows a tighter bore and improves sealing for less blow-by
- Sophisticated barrel profiles help optimize the oil wedge between skirt and wall
- Piston skirts protected by next-gen DUROSHIELD coating
- TAC ring groove geometry
- Piston weight matched to +/- 2 grams
Quick facts
- Part: Sealed Power H345DCP 40 engine piston
- Fits: 1982-1985 Chevrolet Impala V8 5.7L and other vehicles
- Material: Hypereutectic
- Condition: New
A worn piston can show up as oil use, low compression, blow-by or an engine knock. Worn rings, a scored cylinder wall, leaking valve seals or a failed head gasket can be behind those signs too, so find the cause before buying pistons. If a worn piston is the cause, this one replaces it.
Fits
This piston fits the 1982-1985 Chevrolet Impala V8 5.7L, the 1987-1990 Chevrolet Camaro V8 5.7L and the 1985-1990 Chevrolet Caprice V8 5.7L, and each takes eight. If your car is not one of these, open the "Vehicles it fits" section and look up your exact model and engine.
Specifications
Fit and size
- Quantity per vehicle: 8
- Bore diameter: 4.040 in
- Oversize amount: 0.040 in
- Piston pin outside diameter: 0.927 in
- Compression height: 1.548 in
- Top and second compression ring thickness: 0.0781 in
- Oil ring thickness: 0.1875 in
Build and materials
- Type: cast piston
- Piston material: Hypereutectic
- Piston head type: Flat
- Skirt coating: DUROSHIELD
- Condition: New
- Country of origin: India
In the box
Assembly lubricant is not included.
Interchange: P3103.40 · P1534(8)040 · 224-2770.040
This part cross-references / interchanges with the following part numbers:
P3103.40, P1534(8)040, 224-2770.040
Frequently Asked Questions
Will this piston fit the 1987-1990 Chevrolet Camaro V8 5.7L?
Yes, Sealed Power H345DCP 40 fits the 1987-1990 Chevrolet Camaro V8 5.7L, and each takes eight; other vehicles are in the "Vehicles it fits" section.
Do these Sealed Power pistons come with assembly lubricant?
No. Assembly lubricant is not included with Sealed Power H345DCP 40, so have it on hand for the build.
Are these Sealed Power hypereutectic pistons skirt coated?
Yes. The skirts are protected by next-gen DUROSHIELD coating, and the piston material is hypereutectic.
Are these Sealed Power cast pistons standard size or oversize?
They are oversize. This cast piston is 0.040 inch oversize and made for a 4.040-inch bore.
Does this piston interchange with 224-2770.040?
Yes. 224-2770.040 is one of the numbers Sealed Power H345DCP 40 replaces, along with P3103.40 and P1534(8)040.
