ZD 30 Series 1-3 #22680AD21A (previously 22680AD210 which was before that 22680 AD201)

ZD30 Series 4 #22680 7S000

Last I knew these were the correct part numbers. Try emailing www.nizzbits.com.au to see if there is a newer part number.

I would suggest getting a code test done before you replace anything else.

Tony