Dimensions Of Replacement Air Spring for Firestone Coil-Rite F6003

Updated 02/26/2025 | Published 02/23/2025

Products Featured in This Question

Replacement Air Spring for Firestone Coil-Rite Rear-Axle Kits 4108 and 4121 - Qty 1

(1)

$68.78

Firestone Coil-Rite Air Helper Springs - Rear Axle

(721)

$125.89

Question:

Please confirm that Firestone 4.75 x 10 6003 coil rite has 4.75” of diameter and 10” height . I have seen in the Firestone website that is 6x6x12 . I am a little confused. Thank you

asked by: Carlos S

Expert Reply:

Hello Carlos. I took a walk out to our warehouse and got one of the Firestone # F6003 Coil-Rite springs in hand. I can confirm the diameter is 4.75" and the height is 10", as you can see in the picture below.

This # F6003 spring is intended to be a replacement for the Firestone # F4108 and # F4121 kits. What vehicle is this going on?

expert reply by: Jesse M

F6003 Dimensions
(click to enlarge)

F6003 In My Hand
(click to enlarge)

Carlos

2/26/2025

Thanks Jesse, my pickup is a 2023 Nissan Frontier, 2.5 diésel 4X4 made in Mexico, rear spring inside diameter is 4,75” x 10” high. I need to replace one of them, because I overinflated it. Carlos