VolvoCooling System

3094621 Piston Ring Air Compressor — Volvo Trucks: FL7 F10: 1987> 1995

These piston rings are essential components within the air compressor, forming a seal between the piston and the cylinder wall to maintain compression and prevent air leakage. Manufactured to precise OEM standards, they ensure optimal compressor efficiency and longevity, unlike worn rings that allow blow-by and reduced performance. Symptoms of worn piston rings include a constant hissing sound from the compressor, failure to build adequate air pressure, and excessive oil consumption within the compressor.

Piston Ring Air Compressor – Part No 3094621 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryCooling System
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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Installation & Application Notes

Flush cooling system with distilled water before refilling. Use pre-mixed coolant — never plain water, which causes corrosion. Pressure-test system after any cooling repair. Check thermostat by immersing in hot water — should open at rated temperature.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypePiston Ring Set
MaterialCast iron, steel alloy
ApplicationAir compressor cylinder
Service LifeReplace when compressor performance degrades or during overhaul
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of worn piston rings is often a noticeable decrease in the air compressor's ability to build and maintain pressure. If ignored, this can lead to continuous air leaks, increased wear on cylinder walls, and eventual compressor failure. Continued operation with faulty rings can result in significant internal damage to the compressor assembly.

Installation Tip

Carefully inspect the cylinder bore for any scoring or damage before installing the new rings; hone if necessary. Ensure the piston ring gaps are staggered correctly around the piston to prevent leakage.

Service Note

Always inspect the cylinder bore and piston for wear or damage, and replace any worn seals or gaskets within the air compressor assembly when changing piston rings.