Engines and Components› Pistons and Piston Rings
Manley Performance
Manley Nissan (SR20DE SR20DET) 16pc Valve Springs
SKU: M004 22165-16
Advanced — 4+ hours
Description
These springs have an outer diameter of 1.160 inches and an inner diameter of 0.835 inches. They provide 90 lbs of seat pressure at 1.550 inches and open pressure of 185 lbs at 1.170 inches or 225 lbs at 1.010 inches. The stock/max lift is 0.380"/0.540", with a coil bind at 0.960" and a rate of 248 lbs/in. They are sold in a kit of 16 pieces and are suitable for the Nissan S20 engine.
Fitment
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Specifications
| Brand | Manley Performance |
| Part Number | M004 22165-16 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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