Gasket/Seal Kit, Top End Maintenance, 90~92 (BUNA-N). 

Contains all of the items listed in the "Fuel Injector Maint, (BUNA-N) kit, plus

1. Gasket Set, Fuel Injector Housings
2. Gasket Set, Coolant Outlet Pipes
3. Gasket, Cylinder Case Vent Cover
4. Seal Set, Fuel Pipes to Regulator & Rails

Perfect for the complete plenum pull project!  Includes all gaskets & seals necessary to also remove the fuel injector housings, coolant pipes and crankcase ventilation cover to be able to clean out the engine valley.  Oil, dirt & debris commonly accumulate under the plenum and can plug the valley drain hole at the rear of the engine.  If this hole becomes plugged, water in the valley can cause the starter to short to ground.

Items contained in this kit are as follows;

• Note: Please review the following o-ring seal material compatibility information.  You should choose the material you deem best for the fuel being used in your application.  Most modern fuels available to the general public today contain ethylene alcohol in various amounts ranging from 5% to 85%. 

BUNA-N (Nitrile) is the least expensive and is ranked #1 on a scale of 1 to 4 (Best Choice) for fluid compatibility with 100% gasoline and ranked #3 with hydrocarbon gasoline blends, E10 (10% fuel ethanol) - E85 (85% fuel ethanol).

VITON-A is more expensive and is ranked 2 on a scale of 1 to 4 (Best Choice) for fluid compatibility with hydrocarbon gasoline blends, E10 (10% fuel ethanol) - E85 (85% fuel ethanol).  Please refer to PN 33339092-V for this same kit with VITON-A o-ring seals.