PLATINUM RACING PRODUCTS - NISSAN RB OIL GALLERY BLOCK OFF INC TAP BITBLACK, SILVER, GOLD, PURPLE NORMALLY STOCKED OTHER COLORS EXPECT 3 4 WEEKS LEAD TIME RB Oil gallery threaded bungs. A much needed product when building a Nissan RB engine. The main oil gallery in all RB RD blocks is sealed from factory with a steel straight walled plug, it needs to be removed for the gallery to be cleaned before a build. We've designed a set of custom size threaded oil gallery block offs and have included a tapping tool in the kit, no