The Manley Performance forged piston kit identified by manufacturer part number 620000C-4 is engineered for a measured performance-engine assembly. Final compatibility depends on the exact engine, mating components, and verified dimensions, not a similar product title alone.
Key Features
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2002-2005 | Subaru | Impreza | Verify exact engine and component dimensions |
| 2005 | Saab | 9-2X | Verify exact engine and component dimensions |
Specifications
| Brand | Manley Performance |
|---|---|
| Manufacturer Part Number | 620000C-4 |
| Product Type | Forged Piston Kit |
| Fitment Type | Vehicle Specific |
| Condition | New |
| Stroke | 4 mm |
| Compression Ratio | 8.5:1 |
What's Included
One new Manley Performance forged piston kit in the exact quantity and configuration stated in the specifications. Bearings, rings, pins, locks, fasteners, and installation hardware are included only when expressly listed for this part number.
About Manley Performance
Manley Performance engineers connecting rods, pistons, crankshafts, valves, valvetrain components, and related hardware for professional street, racing, and forced-induction engine builds.
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Frequently Asked Questions
Will Manley 620000C-4 fit my 2002-2005 Subaru Impreza?
That vehicle range is listed, but compatibility also depends on the exact engine code, bore, stroke, mating components, clearances, and current Manley application notes.
Are rings, pins, and locks included with this piston product?
Included hardware varies by exact part number. Confirm ring, wrist-pin, lock, coating, quantity, and upgraded-pin details in the current Manley package listing before machining.
What must the machine shop measure before assembly?
Verify finished bore, piston-to-wall clearance, ring end gaps, deck height, piston-to-valve clearance, wrist-pin fit, bearing clearances, and final compression ratio.
Installation Instructions
Use the current Manley instructions for part number 620000C-4 and the engine builder's measured assembly specifications. Verify material, orientation, machining, clearances, fastener procedure, lubrication, balance, torque or stretch values, and break-in before operation.
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