In Navkar Mantra there are 9 pad (parts).

They are:

1. Namo Arihantāṇam
2. Namo Siddhāṇam
3. Namo Āyariyāṇam
4. Namo Uvajjhāyāṇam
5. Namo Loe Savva Sāhūṇam
6. Eso Pañcha Namokāro
7. Savva Pāvappaṇāsano
8. Maṅgalāṇañcha Savvesiṁ
9. Paḍhamaṁ Havai Maṅgalaṁ

So the answer: Navkar Mantra has 9 pad.