Catalog status
Under development
Under development
Parts / Ford
43-1121
APM USA has a reference record for this part number. APM still needs to confirm the details before quoting stock, price, or production options.
Record check
Engineering-development record.
Use the measurements and references below when you ask APM USA to check this part. This page is not a stock, price, or production claim.
Spring group
Multi-leaf
Spring stage
Progressive
Leaf count
5
A-side length (La)
25"
B-side length (Lb)
31-13/32"
Camber / free arch (C)
7-3/4"
Width / thickness (W)
3 width
APM USA still has to confirm the record, fit notes, and production route before this becomes a current catalog part.
Part details
Part numbers and reference numbers.
Use this record when you ask APM USA to check the part number.
- SRI number
- 43-1121
- Catalog status
- Under development
- OEM references
- F4TA5560TA · F5TZ5560D
This status means APM USA must verify the record before quoting stock, price, or production options.
Cart or quote
Choose the right buying path.
Add 43-1121 to the cart so APM USA can check the record before discussing stock or price.
- Part number: 43-1121
- Catalog status: Under development
- Vehicle shown: Ford
- Spring group: Multi-leaf
- Spring stage: Progressive
- Ready-now parts: create an account or sign in to see price and checkout.
- Parts to check: APM keeps them in the cart and replies by email.
APM Direct
Add this part to APM Direct.
Availability
APM will check this part before quoting.
Ask availability APM will confirm stock and timing.
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No login needed to add it. Email comes later so APM can reply.
View cart (0)Direct email opens your email app, sends to ask@mrapmusa.com, and includes the page link and specs shown above. Ready to buy? Create an account or sign in.
Measurement guide
Measure the spring in hand.
Use this as a field guide for the spring you removed. It is not a factory print for this part.
Selected diagram · Multi-leaf progressive spring diagram
Multi-leaf progressive spring diagram
Use this diagram as a measurement guide. Match the letters below against 43-1121. This is not a factory print.
FL
Full spring length reference shown on the diagram
La
A-side eye center to center bolt
Lb
B-side eye center to center bolt
C
Camber / free arch at the center bolt
Ø Eye
Spring eye diameter
W
Spring pack width; confirm thickness from the material-size row
Leaves
Main leaf count in the spring pack; source field #L
- La A-side length
- 25" Measure from the front eye center to the center bolt.
- Lb B-side length
- 31-13/32" Measure from the rear eye center to the center bolt. Source length pair.
- C Camber / free arch
- 7-3/4" Measure vertically at the center bolt from the eye-center line to the spring pack.
- W Width / thickness
- 3 width Match this width to the W callout on the removed spring.
- Leaf count
- 5 leaves Count the main leaves in the pack and compare the spring layout.
Before you send it
Check the basics first.
- Check this part number against the spring tag, old invoice, or service record for Ford.
- Measure the length marks on the removed spring: La / a-side length: 25"; Lb / b-side length: 31-13/32".
- Check the spring eye hardware before treating this as a match candidate.
- Confirm the secondary checks: C / camber / free arch: 7-3/4"; W / width / thickness: 3 width; leaf count: 5 leaves.
- Vehicle name and OEM numbers narrow the search. They do not confirm fit by themselves.