Sealed H547CP 30 engine piston for the 1987-1993 Chevrolet LLV 4-cylinder 2.5L and other vehicles turns combustion pressure into force on the connecting rod. This listing is an oversized piston set.
- Piston design helps improve cylinder sealing for less blow-by
- Retains standard ring gaps in the top groove
- DUROSHIELD skirt-coated piston
- Moly-graphite coating extends engine life and reduces friction for higher fuel economy
- Piston helps prevent damage from inadequate lubrication on start-up
Quick facts
- Part: Sealed H547CP 30 engine piston
- Fits: 1987-1993 Chevrolet LLV 4-cylinder 2.5L and other vehicles
- Material: Hypereutectic
- Condition: New
Oil burning, blue exhaust smoke or low compression can mean worn pistons or cylinder walls. These signs alone do not prove the pistons are at fault, since worn valve stem seals can also burn oil.
Fits
The set is listed for a wide range of Chevrolet, GMC, Buick, Oldsmobile, Pontiac, Jeep and American Motors models, including the 1985-1993 Chevrolet S10 4-cylinder 2.5L and the 1991-1993 GMC Sonoma 4-cylinder 2.5L. If your car is not named here, look for its make, model and year in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 4
- Oversize: 0.030 in
- Bore diameter: 4.0000 in
- Piston pin outside diameter: 0.9275 in (23.559 mm)
- Compression height: 1.560 in
- Pin offset: 0.04 in (1.016 mm)
- Ring thickness: top 0.0625 in, second 0.0781 in, oil 0.1875 in
Build and materials
- Piston material: Hypereutectic
- Piston head type: Recessed
- Skirt coating: DUROSHIELD
- Condition: New
- Country of origin: India
In the box
One engine piston set; the engine takes four pistons. Assembly lubricant is not included.
Interchange: P450H030 · 9H3121030 · 1226P30 · H3121030
This part cross-references / interchanges with the following part numbers:
P450H030, 9H3121030, 1226P30, H3121030
Frequently Asked Questions
Does the Sealed H547CP 30 piston set fit the 1985-1993 Chevrolet S10 4-cylinder 2.5L?
Yes. The Sealed H547CP 30 engine piston is listed for the 1985-1993 Chevrolet S10 4-cylinder 2.5L, and that engine takes four pistons.
Does the H547CP 30 piston set come with assembly lubricant?
No. Assembly lubricant is not included with the Sealed H547CP 30. The listing is one engine piston set, and the engine takes four pistons.
What oversize is the Sealed H547CP 30 piston set?
It is oversized by 0.030 in. The piston pin outside diameter is 0.9275 in (23.559 mm) and the compression height is 1.560 in.
What signs can mean the pistons need replacing before I order the H547CP 30 set?
Oil use, blue exhaust smoke and low compression can mean worn pistons, rings or cylinder walls. A shop can run a compression test to sort out which.
Do these Sealed Power pistons have a skirt coating?
Yes. The Sealed H547CP 30 has a DUROSHIELD coating on the piston skirt, and the piston material is hypereutectic.
