Sadly, not. Lexus stopped fitting these high pressure fuel pump noise dampeners to the LS and consider the diesel-like rattling noise "normal" in their flagship $100,000 sedan. Heck, if a Mercedes diesel can rattle like a bag of old bolts, I guess they figure they can get away with it............. really sad!
I'm ordering the dampeners (4 - two on each side) and will report back if it helps.