Volks,

I found this in a FAQ, but I can't vouch for whether it works or not; or
even where I got it.

Hope it works:

Automotive Heater Technology, Inc.
Ark Mirvis
31 Byram Bay Road
Hopatcong, NJ 07843-1921

(201) 398-6363

new and used auto gas heaters, German and American; remanufactured and new
Eberspacher and Webasto heaters; repair service; one-year guarantee.