Daha önce konuştuğumuz üzere fren teli ayrı değiştirilecek.

Daha önce means earlier, before, or previously.

• daha = more / further
• önce = before

Together, they very often mean previously.

In this sentence, it sets the time/background for what follows: as discussed earlier.

Konuştuğumuz is a very common Turkish participle/relative-clause form. Here it means something like that we talked about/discussed.

It breaks down like this:

• konuş- = speak / talk
• -tuğ- / -duğ- = a participle suffix that turns the verb into something like the thing that...
• -umuz = our / we marker

So konuştuğumuz literally gives the idea of:

• what we talked about
• that we discussed
• which we discussed

In konuştuğumuz üzere, the whole phrase means as we discussed or as previously discussed.

Because of the ending -umuz.

In this kind of structure, Turkish often marks who did the action with a possessive-style ending. So:

• konuştuğum = that I discussed
• konuştuğun = that you discussed
• konuştuğu = that he/she/it discussed
• konuştuğumuz = that we discussed

So the sentence specifically refers to something we talked about earlier.

Here, üzere means something like as, in accordance with, or as stated/discussed.

So:

• konuştuğumuz üzere = as we discussed
• belirttiğimiz üzere = as we stated
• görüştüğümüz üzere = as we discussed / as agreed

This use of üzere is a bit formal and is very common in business, service, and written communication.

Important: this is not the same as the other common use of üzere in phrases like:

• gitmek üzere = about to go / in order to go

So in your sentence, üzere is part of a set phrase meaning as previously discussed.

Sometimes yes, but üzere sounds more formal and businesslike.

Compare:

• Daha önce konuştuğumuz üzere... = As we discussed earlier...
  → formal, professional, written

• Daha önce konuştuğumuz gibi... = Like we discussed earlier... / As we discussed earlier...
  → a bit less formal, more conversational

So üzere is a very natural choice in messages from a mechanic, company, or service provider.

Because fren teli is a Turkish noun compound.

In Turkish, compounds like this often work as:

• first noun: bare
• second noun: takes a 3rd-person possessive ending

So:

• fren = brake
• tel = wire / cable
• teli = its wire/cable

Together:

• fren teli = brake cable

This pattern is very common:

• araba kapısı = car door
• su şişesi = water bottle
• telefon numarası = phone number

So fren teli is the normal Turkish structure.

Here ayrı means separately or on its own.

So fren teli ayrı değiştirilecek means the brake cable will be replaced separately, rather than as part of something else.

Depending on context, this could imply:

• it is not included with another repair
• it will be replaced as a separate item
• it is handled independently from the rest

Turkish often uses ayrı where English might use an adverb like separately.

Değiştirilecek comes from değiştirmek, which means to change or very often to replace.

It can be broken down like this:

• değiş- = change
• -tir- = makes it transitive/causative, so değiştir- = change something / replace something
• -il- = passive
• -ecek = future

So:

• değiştirilecek = will be replaced / will be changed

In repair contexts, Turkish often uses değiştirmek where English naturally says replace.

Because the focus is on the brake cable, not on who will replace it.

• fren teli değiştirilecek = the brake cable will be replaced
• active version: Birisi / usta fren telini değiştirecek = Someone / the mechanic will replace the brake cable

In service language, Turkish often prefers the passive when the doer is obvious or unimportant.

It sounds natural and professional, similar to English service language like:

• The part will be replaced
• The item will be repaired

Because in this sentence it is effectively the grammatical subject of a passive verb.

Compare:

Active

• Usta fren telini değiştirecek.
• The mechanic will replace the brake cable.
• Here fren telini is the direct object, so it takes the accusative ending -ni.

Passive

• Fren teli değiştirilecek.
• The brake cable will be replaced.
• Now fren teli is the thing being talked about as the subject of the passive sentence, so it is not in the accusative.

This is a very useful pattern to notice in Turkish.

The sentence is:

Daha önce konuştuğumuz üzere fren teli ayrı değiştirilecek.

A helpful way to see the structure is:

• Daha önce konuştuğumuz üzere = as we discussed earlier
• fren teli = the brake cable
• ayrı = separately
• değiştirilecek = will be replaced

So the verb comes at the end, which is normal in Turkish.

Turkish word order is flexible, but this version sounds natural and clear, especially in formal written communication.

Yes. It sounds natural, especially in customer service, repair, or business communication.

It has a slightly formal/professional tone because of konuştuğumuz üzere. A more conversational version might be:

• Daha önce konuştuğumuz gibi, fren teli ayrı değiştirilecek.

But the original sentence is perfectly normal and idiomatic in a professional setting.