Checked Fastlane and a rebuild kit is available for your car. I have no experience with that pump, but my older one is pretty easy to rebuild.

Cazzzidy,

On my 300D the "plunger bolt" came loose and broke a hole through the housing. I had thought that it was a torn diaphram, but it wasn't. I replaced the diaphram since I had it apart, replaced the check valves and repaired the housing with JBWELD,,,,,,great stuff. No problems since.

I used Loctite blue to thread the "plunger bolt" back in and I hope it holds.

JCD