Fuel+Injector+O-Rings

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 * Fuel Injector O-Rings** are a compression-type O-ring mounted to the fuel injectors.



=Versions= There are four Fuel Injector O-Rings: Two versions of the upper, and two versions of the lower. The versions correspond with Fuel Injector phases.
 * =  ||= Non-Turbo ||= NA (Convertible) ||= Twin Turbo ||
 * = Phase I ||= 1990-1992 ||= 1993 ||= 1990-1994 ||
 * = Phase II ||= 1993-1996 ||= 1994-1996 ||= 1995-1996 ||

=Replacement= Injector O-rings are a compression type that can only be used **once**, and after they've been removed, they **cannot** be used again. Failure to replace these o-rings //will// cause a fuel leak, and a fuel leak into the cylinder can (and will) hydrolock the motor, which can cause complete engine failure. Main Article: Fuel Injector Replacement.

=Specifications= Injector O-Rings should be replaced with Nissan parts, which are relatively inexpensive and ensure correct fitment. However, some owners suggest replacing them with viton O-rings, on the basis that they will be more durable (despite the fact that, when installed correctly, virtually no O-Ring set has leaked). The size of the O-Rings are as follows. >
 * 16x21x2.5 & 20x27x3.5 (Old Style)
 * New Style: NFI, sorry :(

=Related Articles= Parts (Category) Fuel System (Category)