Ring set piston 879147T97

• Ring set piston 879147T97

Piston ring set 879147T97

This piston ring component seals the combustion chamber and supports oil control on the cylinder wall.

It sits in the ring grooves of the piston Wear, ring breakage or carbonization lead to loss of compression, blow-by and increased oil consumption.

Component classification: Piston ring or ring set

System function: Sealing and oil control in the piston-cylinder system

Compatible manufacturers: Mercury / MerCruiser

Compatible models: various Mercury and MerCruiser engines - check serial number

Reference numbers:

• OEM: 879147T97

FAQ

What exactly is the task / function of the component?
The piston ring set seals the combustion chamber against the cylinder wall, supports heat dissipation from the piston and regulates the oil film on the raceway. Profile, joint clearance and ring groove fit are crucial for this.

How can you recognize a defect / typical symptoms?
Typical symptoms are loss of compression, increased oil consumption, blow-by, sooted plugs and loss of power. Ring breakage, coking or excessive impact play significantly impair the sealing effect.

How do you check / test the component?
Shock clearance, lateral air in the ring groove, ring tension and the condition of the cylinder bore are checked. Compression and leak-down tests provide important preliminary information when the engine is installed.

When should it be replaced?
Piston rings should be replaced in the event of an overhaul, compression problems, ring breakage or wear that is outside the tolerance range. In practice, reuse after disassembly is usually not advisable.

How do you check compatibility?
The OEM number, bore size, standard or oversize, ring thicknesses, profile shape and set size per piston must be compared. The orientation of the individual rings and the corresponding piston variant must also match.