This is just good all around information to have available. I get asked OEM throttle body sizes all the time and here is a great quick reference.
Honda Throttle Body Sizing Chart
Inside Diameters (in mm)
- d15b7 – 56
- d16a6 – 55
- d16y7 – 56
- d16y8 – 56
- d16z6 – 56
- ZC – 55
- d16a1 – 55
- d16a8 – 55
- b18c1 – 60
- b18c5 – 62
- b18a – 58
- b18b – 60
- b16a SiR – 58
- b16a Sir2 – 60
- b16a2 – 60
- b16a3 – 60
- b20b – 60
- b20z – 60
- h22a – 60
- h23a – 60
- f20c – 62
- f22 – 60
- f23 – 60
Tags: b18c1 tb, b18c5 tb, d series throttle bodies, f series throttle bodies, gsr throttle body, h series throttle bodies, honda throttle body size, oem itr throttle body
