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The Manley Performance valve spring and retainer kit identified by manufacturer part number 26180 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
- Exact Manley manufacturer part number
- Critical application and dimensional details organized for verification
- Designed for measured performance-engine assembly
- Requires final machining, clearance, and compatibility checks
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2002-2012 | Subaru | Impreza | Verify exact engine and component dimensions |
| 2005-2006 | Saab | 9-2X | Verify exact engine and component dimensions |
Specifications
| Brand | Manley Performance |
|---|---|
| Manufacturer Part Number | 26180 |
| Product Type | Valve Spring and Retainer Kit |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new Manley Performance valve spring and retainer 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.
Related Manley Performance Products
- Shop all Manley Performance products
- Manley Subaru WRX/STi .490in Valve Spring and Retainer Kit (w/o Valve Locks) (16 each)
- Manley Nissan SR20DE/SR20DET Valve Spring and Retainer Kit (w/o Valve Locks)
- Manley Subaru WRX/STI 16pc Valve Springs (1.050/.755) (for use with 23180-16 Retainers)
Frequently Asked Questions
Will Manley 26180 fit my 2002-2012 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.
What specifications must match for this valve spring and retainer kit?
Confirm every listed dimension, material, quantity, engine interface, mating component, and current Manley application note. Similar-looking engine components are not automatically interchangeable.
Is professional installation recommended?
Yes. A qualified engine builder should inspect the component, measure the engine and mating parts, verify all clearances, and follow current Manley and engine-manufacturer procedures.
Installation Instructions
Use the current Manley instructions for part number 26180 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.
Engine
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