1979 Dodge F40 Motorhome Shocks
For a 1979 Dodge F40 Jamboree, Monroe 555037 front and 555038 rear are candidates to investigate—not parts to select from appearance alone. The reported front measurement was tip to tip, while a stud-mounted shock is measured to its specified mounting reference. Resolve that difference before deciding whether either shock matches the motorhome.
The motorhome and its mounts
The owner describes a van-type Class C with a front mount using two bolts at the bottom and one nut at the top. The rear uses a large bolt at both ends. Reported front axle weight is 3,660 pounds and total GVW 10,600 pounds. These describe the particular inquiry, not a capacity rating for every F40. A mounting style resembling a B350 does not establish the complete application.
Compare dimensions at consistent points
| Item | Collapsed length | Extended length | Measurement detail |
|---|---|---|---|
| Owner’s front shock | 13 in | 18 in | Tip-to-tip measurement |
| Owner’s rear shock | 15 in | 22 in | Confirm eye-center measuring points |
| Monroe 555037 candidate | 10.125 in | 15.625 in | Check stud-base/eye-center convention |
| Monroe 555038 candidate | 12.875 in | 21 in | Verify exact mounts and usable travel |
A similar-looking part is only a starting point
The owner also identified Bilstein f4-b46-0925-HO as visually similar. Do not substitute it without a catalog and dimensional check. Compare the upper and lower mounts, bushing or sleeve sizes and the required compression and extension limits. A shock must not become the suspension’s unintended hard stop.
Get the measurement question resolved
Use Monroe’s mounting-length specifications alongside the actual chassis and removed shock markings. Have a qualified suspension specialist confirm the reference points and travel. Include photographs of the front stud and lower attachment, and both rear mounts, when asking for help. This is more useful than ordering a part solely because its product picture resembles the old shock.
Product details to compare
Check the exact vehicle application, package contents and installation requirements for each candidate.
Related guides
Frequently asked questions
Why is the front tip-to-tip measurement misleading?
The threaded stud tip is not the same reference as the specified stud-mount base. Use the manufacturer’s measuring convention on both shocks.
Do matching approximate lengths prove fitment?
No. Mount dimensions, suspension travel and application requirements must also agree.
Get help choosing the right parts
Contact Shockwarehouse with your vehicle or chassis details and the parts you are considering.
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