Leaf springs for working trucks and trailers

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Rear

Parts / FORD

43-659

This page shows the published specs for 43-659. Compare them with the spring in hand before you ask about price, stock, or fit.

  • Application shown: DBUZ5560A/DTUA5560TA.
  • OEM numbers shown: D7UA5560TA · D8UZ5560A.
  • Published load details: Load capacity: 3300 lb.

Technical record

Part numbers, specs, and how to ask about this part.

Use these published details to compare the spring in hand and send the right inquiry without retyping everything.

Position

Rear

Spring group

Parabolic

Spring stage

Single stage

Leaf count

4

Full length (L)

54.82 in

A-side length (La)

23.82 in

B-side length (Lb)

31.00 in

Camber / free arch (C)

4.72 in

Eye inside diameter (Ø Eye)

A-side 1.37 in · B-side 1.24 in

Bushing diameter (Ø Bush)

A-side 0.63 in · B-side 0.56 in

Material width / thickness (W)

2.99 × 0.51 in

Load capacity

3300 lb

Published load details, when shown here, are secondary checks alongside the spring in hand. Ask APM USA to confirm fit before you buy.

Part details

Part numbers and reference numbers.

Start here, then compare the spring in hand.

SRI number
43-659
APM Part Number
A433-00731-P50
OEM references
D7UA5560TA · D8UZ5560A

These reference numbers help you check the listing. The guide below is only a general measuring guide for the spring in hand.

Inquiry

Send this part page as-is.

Use the prefilled email to ask about price, stock, or fit for 43-659. It includes the page link and the key specs so you do not have to type them again.

  • Part number: 43-659
  • Vehicle shown: FORD DBUZ5560A/DTUA5560TA
  • Spring group: Parabolic
  • Spring stage: Single stage
  • Email includes: page link, specs, reference numbers, and any load or weight details shown on this page.
  • More than one part? Use the inquiry list to combine several part numbers into one inquiry.
Ask about 43-659

Opens your email app with a draft to ask@mrapmusa.com and includes the page link and specs shown above. Existing customers can keep going in customer login.

Page URL https://apm-usa-shopify-staging.pages.dev/parts/ford/43-659/

Measurement guide

Measure the spring in hand at these points.

This is a general measuring guide for the spring in hand. It is not an exact factory print for this part.

DXF-derived general engineering diagram of a parabolic single-stage spring with measurement labels.

Selected diagram · Parabolic single-stage spring diagram

Parabolic single-stage spring diagram

Use this DXF-derived parabolic single-stage drawing as a general shape and measurement guide. Match the color-coded letters below to the drawing before you ask about 43-659. This is a general fitment guide, not an exact factory print.

L

Full eye-center to eye-center length

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

Inside diameter of the spring eye

Ø Bush

Installed bushing diameter

W

Spring pack width; confirm thickness from the material-size row

L Full length
54.82 in Measure eye-center to eye-center across the removed spring.
La A-side length
23.82 in Measure from the front eye center to the center bolt.
Lb B-side length
31.00 in Measure from the rear eye center to the center bolt. Calculated from the published L and La values.
C Camber / free arch
4.72 in Measure vertically at the center bolt from the eye-center line to the spring pack.
Ø Eye Eye inside diameter
A-side 1.37 in · B-side 1.24 in Check the inside diameter of the spring eye at both ends.
Ø Bush Bushing diameter
A-side 0.63 in · B-side 0.56 in Check the installed bushing diameter at both ends.
W Material width / thickness
2.99 × 0.51 in Match the first material-size value to the W width callout, then confirm the thickness stack on the removed spring pack.
Leaf count
4 leaves Count the main leaves in the pack and compare the spring layout before asking about fit.

Before you ask

Check these points first.

  • Compare this part number to the spring tag, old invoice, or service record for FORD DBUZ5560A/DTUA5560TA.
  • Measure the length marks on the removed spring: L / full length: 54.82 in; La / a-side length: 23.82 in; Lb / b-side length: 31.00 in.
  • Check the hardware marks: Ø Eye / eye inside diameter: A-side 1.37 in · B-side 1.24 in; Ø Bush / bushing diameter: A-side 0.63 in · B-side 0.56 in.
  • Confirm the secondary checks: C / camber / free arch: 4.72 in; W / material width / thickness: 2.99 × 0.51 in; leaf count: 4 leaves.
  • Load or weight details shown on this page: Load capacity: 3300 lb. Use them as secondary checks only, not as a fit confirmation by themselves.
  • Vehicle name and OEM numbers help narrow it down, but they do not confirm fit by themselves.