Comparing The Dexter T43397007K And T63FR Brake Actuators

Question

Question:

I need to replace an Atwood brake actuator on my boat trailer not sure of model. What is the difference between the taller actuators like the Dexter T43397007K and the long/narrow ones like the Dexter T63FR?

asked by: Gary G

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Expert Reply:

We can certainly help you replace your Atwood Actuator. The Dexter # T43397007K and # T63FR actuators you mentioned are going to be similar in that they are made for trailers with drum brakes and they both will bolt on to a 3" tongue. As far as the height/ dimension of the actuator itself, it really just comes down to design and the placement of the internal components. The # T43397007K has the master cylinder connections above the tongue, whereas the # T63FR is more for trailers where connections are inside/underneath the tongue. The # T43397007K will also fit any of the standard trailer ball sizes, while the # T63FR will only fit a 2" ball.

I am not sure exactly what model Atwood actuator you have, but we would want to make sure the replacement is of similar design, just to keep things simple. If you can provide a model number and/or pictures of your actuator, that will be the best way to narrow down the correct replacement.

expert reply by: Jesse M

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Answer 1

Yes, the Dexter Surge Brake Actuator part #DX33FR is compatible with tandem axle brake setups where there's four brake assemblies.

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Answer 2

You are correct that the Atwood 85739 has been discontinued along with all of the replacement parts for it. I recommend replacing it with the Dexter DX7.5L A-60 Brake Actuator w Electric Lockout - Weld On - Disc - 2" Ball - Primed - 7.5K…

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Answer 3

Yes, you can use the inner member from the #DX27FR and the #DX83FR interchangeably. Although they are designed to fit different trailer tongue sizes, they both use the same inner member #DX97FR. You could either purchase the inner member separately…

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Answer 4

In order to choose a brake actuator you need to first choose one that meets or exceeds the GTWR of the trailer. You also want to choose one that matches the hitch ball you are using, the type of brakes (disc or drum), and fits your trailer tongue.…

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Answer 5

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

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Answer 6

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the…

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Answer 7

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 8

Thank you for the pictures! For a replacement option I recommend the Dexter DX7.5L A-60 Brake Actuator w Electric Lockout - Bolt On - Disc - 2" Ball - Zinc - 7.5K #DX29FR to replace your current actuator. The #DX29FR has a 7500lb trailer weight…

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Answer 9

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

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