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OEM Oil Pressure Relief Spring: DSM/EVO

OEM Oil Pressure Relief Spring: DSM/EVO
 
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Genuine OEM part.

This is the small spring that sits inside the oil filter housing (in a portion of the housing known as the oil bypass valve) and prevents the engine's oil pressure from getting too high. It does this by bleeding off any pressure in excess of the spring's pressure rating. (Excess oil is bled directly into the pan, thereby bypassing the oiling system). As it happens, the stock pressure relief spring on a DSM/EVO is rated fairly high (about 100 psi) which many people consider unacceptably high. This particular relief spring came stock on a Mitsu 1.6L engine that happened to have a lower bypass rating. Mitsu does not publish the actual spring rating of their various relief springs, but many DSMers/EVOers that have used this spring have claimed a drop in max oil pressure from around 100psi (for the stock spring) to about 75psi (for this spring).

Sold individually.

Applications:
DSM (1990-99).
EVO (I-IX).

SKU MIT-MD015988
Our price: CDN$7.49 (USD$5.48)
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