The ongoing confusion in this thread is due to the fact that the LR4 "Diesel" (known as Discovery 4 in the rest of the world) is not available in the US, and the snorkel is available only for the diesel engine, and most of those using this forum are here in the US (this is labelled the LR4 Forum after all). That is - it doesn't apply. In fact, I would even suggest that as the diesel is not available in the US, and the US is the only place the Disco 4 is named LR4, that there is no such thing as a Diesel LR4. Count or someone who knows what they are talking about will correct this if needed.
Lets try clear up the confusion
LR3 = Discovery 3 - ROW
Snorkel (Safari & OEM) - Fits both gasoline and diesel
LR4 = Discovery 4 - ROW
Snorkel - Safari fits Diesel models only (ROW) - offset to template
Does not fit Gasoline LR4 (Discovery 4) due to dual intakes - well actually it would fit one side but that would defeat the object