(Vehicle Certification label on drivers door)
Want to know what the weight rating is of your springs, or looking for factory springs with a higher weight rating?
Spring codes are listed as a 2-part code on the Vehicle Certification Label. The first part identifies the front spring/torsion bar code. The second part identifies the rear spring code.
Here is a list of spring codes that can be found on the sticker in your door jamb, along with the spring rating:
Front Springs:
1 — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250, Explorer/Mountaineer)
2 — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250, Explorer/Mountaineer)
3 — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
4 — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
G — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
8 — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
9 — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
Z — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
T — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
U — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
6 — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
C — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
E — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
F — 5B326 (RH), 5B327 (LH) torsion bar (F-150, F-250)
B — 5B326 (RH), 5B327 (LH) torsion bar (Explorer/Mountaineer)
D — 5B326 (RH), 5B327 (LH) torsion bar (Explorer/Mountaineer)
E — 5B326 (RH), 5B327 (LH) torsion bar (Explorer/Mountaineer)
F — 5B326 (RH), 5B327 (LH) torsion bar (Explorer/Mountaineer)
G — 5B326 (RH), 5B327 (LH) torsion bar (Explorer/Mountaineer)
H — 5B326 (RH), 5B327 (LH) torsion bar (Explorer/Mountaineer)
J — 5B326 (RH), 5B327 (LH) torsion bar (Explorer/Mountaineer)
L — 5B326 (RH), 5B327 (LH) torsion bar (Explorer/Mountaineer)
P — automatic ride contro(Explorer/Mountaineer)
A — 5310 spring (Econoline, F-150, F-250, Ranger)
B — 5310 spring (Econoline, F-150, F-250)
C — 5310 spring (Econoline, Ranger)
D — 5310 spring (Econoline, Ranger)
E — 5310 spring (Econoline, Ranger)
F — 5310 spring (Econoline, Ranger)
G — 5310 spring (Econoline, Ranger)
H — 5310 spring (Econoline, Ranger)
J — 5310 spring (Econoline, F-150, F-250)
K — 5310 spring (Econoline, F-150, F-250, Ranger)
L — 5310 spring (Econoline, F-150, F-250)
M — 5310 spring (Econoline, F-150, F-250, Ranger)
N — 5310 spring (Econoline, F-150, F-250, Ranger)
P — 5310 spring (Econoline, F-150, F-250)
R — 5310 spring (Econoline, F-150, F-250)
S — 5310 spring (Econoline, F-150, F-250)
T — 5310 spring (Econoline, Ranger)
U — 5310 spring (Econoline)
V — 5310 spring (Econoline)
W — 5310 spring (Ranger)
Z — 5310 spring (Econoline)
Rear Springs
6 — 5560 spring (Econoline)
7 — 5560 spring (Econoline)
C — 5560 spring (Econoline, F-150, Ranger)
E — 5560 spring (Ranger)
N — 5560 spring (Econoline, F-150)
P — 5560 spring (Econoline, F-150)
R — 5560 spring (Econoline, Ranger)
S — 5560 spring (Econoline, Ranger)
T — 5560 spring (Ranger)
X — 5560 spring (Ranger)
G — 5560 spring (Econoline, F-150)
K — 5560 spring (Econoline, F-150, Ranger)
A — 5560 spring (F-150)
B — 5560 spring (F-150)
D — 5560 spring (F-150)
F — 5560 spring (F-150, Explorer/Mountaineer)
H — 5560 spring (F-150, Explorer/Mountaineer)
J — 5560 spring (F-150)
L — 5560 spring (F-150, Explorer/Mountaineer)
1 — 5560 spring (F-250)
2 — 5560 spring (F-250)
3 — 5560 spring (F-250, Ranger)
4 — 5560 spring (F-250)
X — 5580 spring, load-leveling suspension (F-250)
Y — 5580 spring, load-leveling suspension (F-250)
About The Author
Growing up, my father always believed that every family needed a truck—there’s just something about having a vehicle capable of hauling anything at a moment’s notice. That philosophy stuck with me, and it’s been the foundation of my lifelong passion for Ford trucks.
While I’m best known for my work with Ford Rangers, I’ve owned a wide variety of Ford trucks over the years—including F-150s, F-250s, F-350s, and even larger rigs like the Ford Excursion, Ford Expedition, and a 1982 Ford Econoline Sportsmobile camper van. I’ve used these vehicles for everything from family transportation to towing car trailers and campers, and each one has fueled my love for Ford’s versatility and durability.
I especially enjoy the styling of 1970s and 1980s Ford trucks—the bold designs, rugged presence, and classic charm are timeless. Sharing my passion for Ford trucks, vans, and SUVs with other enthusiasts online brings me a great deal of joy, and it’s why I created Blue Oval Trucks.
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