Crankcase Vent Breather Filter PCV Pipe 240Z 260Z 280Z 510New crankcase breather filter. Will fit 1970 78 Datsun 240Z, 260Z and 280Z. This filter fits 1" tube size. (Some late 280Z's may have the smaller 5 8" tube.) This breather will clamp onto the steel tube that comes out of the block at the front of the engine, under the manifold. Replaces the cloth covered hose that normally runs up to the air filter. Helps clean up the engine compartment especially when running Weber or Solex carburetors. This will