How To Find Correct Replacement Trailer Leaf Spring for Dexter D-40 Trailer Axle

Question

Question:

I have a Dexter axle D-40 capacity 3700 lb, I want to go to a higher capacity leaf spring, which leaf spring do I need to get?

asked by: Daniel G

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Expert Reply:

In order to find the correct leaf springs for a Dexter D-40 Axle you'll need to measure their unloaded length and keep in mind as the springs age/wear, they will stretch so the replacements are likely shorter. I don't know what length springs this specific axle uses but once you measure, you can filter our selection below by both weight and length. The 4-Leaf Double-Eye Spring part # e22YR for example measures 26" long (eye to eye) and has a 4,000 lb weight capacity (per axle).

expert reply by: Conner L

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Answer 1

Hey Jaime, yes you can replace your 25-1/4 inch 3,500 lb axle leaf springs with a 5k rated axle spring like the part #e44SR. This will increase the suspension's weight capacity and might make the ride quality a little rougher but it would fit…

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Answer 2

Hey Kevin thanks for your question. There is not much downside to going with the 5,000 lb springs instead of the 3,500 lb. A higher rated spring may make the ride a bit more "chunky" at times, since the spring would not flex as…

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Answer 3

The 4-Leaf Double-Eye Spring #e44SR is our closest leaf spring to the Dexter 072-078-00 which we do not carry. Each of these springs is the same 25-1/4" from eye to eye but are rated for 2,500lbs per spring versus the 2,200lbs you are…

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Answer 4

If the leaf spring part #e57SR that you referenced matches up dimensionally to what your trailer has and has a capacity that is 400 lbs more than needed it would work just fine. Having a bit extra capacity for the leaf springs would not cause an…

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Answer 5

Since you have a 3,500 lbs axle, I recommend the 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles item #e22YR. These are for 4,000 lbs axles which will still work great with your Gulf Stream trailer. As far as your 26" measurement goes. If…

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Answer 6

I definitely recommend replacing your 3,500 lb 26 inch leaf springs with the 26 inch 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles #e22YR. The 4,500 lb would be too stiff and your ride would suffer so the better option by far are the 4k…

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Answer 7

The closest match we have for a Dexter Trailer Leaf Spring 072-099-00 is the 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles part #e22YR which will be an exact fit. The only difference being a slightly higher capacity of 4,000 lbs compared to the…

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Answer 8

It sounds like the leaf springs you have now are far too understated for the weight of your 2008 Crossroads RV Zinger Series M-26 BH. The pair of leaf springs will need to be rated for at least the weight capacity of the axle. For example, if you…

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Answer 9

Yes, you can use the 4-Leaf Spring part #e22YR on your trailer. The overall length matches what you need and the capacity is close enough to your axle capacity that it would work well in that regard as well. It would have 500 more lbs than what your…

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Answer 10

The springs will be stiffer but they wouldn't damage the boat. You just might see the suspension not move quite as much as it did with the 3,500 lb axles and springs. For a bit more capacity that won't be overly stiff I recommend a 4,000 lb…

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Answer 11

For higher-rated leaf springs that match the length on your existing sets, I recommend taking a look at the 3-Leaf Double-Eye Spring #e57SR. This double-eye spring features an eye-to-eye length of 25-1/4 inches and a spring width of 1-3/4 inches. It…

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Answer 12

The axle capacity for a trailer does double when you add a second one to a trailer. This does not mean the trailer has double the capacity since the frame of the trailer may have the capacity. A trailer's overall capacity is only as strong as…

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How To Find Correct Replacement Trailer Leaf Spring for Dexter D-40 Trailer Axle

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