How to Install the Firestone Coil-Rite Air Helper Springs on a 2014 Toyota Prius

Updated 09/26/2025 | Published 04/16/2025

Question:

Having ordered the Firestone/coil -rite air springs for my 1014 Prius v, I am curious about the supportsinch that came with the order. The blue, disks are referred to in figures BA, BB and C. In each figure the vehicles mentioned are not mine. In figure AA and AB the fill stems are shown either up or down. I have two questions 1. Does my Prius V require the supportinch disks? 2. Should the filler stem located up away from the road or down?

asked by: Michael S

Expert Reply:

Hey Michael welcome back! First thing I noticed is Firestone really needs to update their installation instructions for the Firestone Coil-Rite Air Helper Springs item # F4136. Luckily we've had quite a few customers install this on a Toyota Prius and they've been kind enough to send us in pictures. I have attached a couple of them below.

To answer your questions. The support disks will definitely be needed. The valve stems will be orientated downwards towards the road.

If you have any additional questions or concerns go ahead and put them into the comment box below and I'll be happy to answer them.

expert reply by: Jerred H

Air Helper Springs
(click to enlarge)

Jerred H.

9/26/2025

Hey Michael, did the installation of the Firestone air springs on your Prius go smoothly with the support disks and valve stems positioned as advised? I'm eager to know how it worked out for you, as it could give others confidence when installing theirs.

Michael S.

9/26/2025

@JerredH I suggest that the kit be supplied right angle connectors at the base of the air bags. I made this change when I discovered how much ground clearance is lost making a "gentle" bend in the tubing . Tubing with more flexibility would be appreciated.