syuurihin ga todokimasita.

It is read:

しゅうりひん が とどきました。

• 修理品 = しゅうりひん
• が = が
• 届きました = とどきました

In normal written Japanese, it would usually appear without spaces:

修理品が届きました。

修理品 is a compound noun:

• 修理 = repair, fixing
• 品 = item, goods, article

So 修理品 means something like the repaired item, the repair item, or the item related to repair, depending on context.

In real life, the exact nuance can vary a little:

• it may mean an item that was repaired
• or an item sent in for repair

Usually, the situation makes it clear.

が marks the thing that performed the action of the verb, or more simply, the thing that arrived.

So in:

修理品が届きました。

the item is what arrived.

A natural way to think about it is:

• 修理品 = the repaired item
• が = subject marker
• 届きました = arrived

So: The repaired item arrived.

Because 届く（とどく） is an intransitive verb.

• 届く = to arrive, to be delivered
• 届ける（とどける） = to deliver, to send, to bring

So:

• 修理品が届きました。 = The repaired item arrived / was delivered.
• 修理品を届けました。 = (Someone) delivered the repaired item.

This is a very common Japanese verb pair:

• intransitive: something happens on its own / focuses on the result
• transitive: someone does the action to something

Both can be translated as came or arrived, but they are used differently.

届く is especially used for things like:

• packages
• letters
• documents
• shipments
• goods

So 修理品が届きました sounds very natural for an item or parcel.

来ました is more general and often used for:

• people coming
• things coming in a broader sense

For a delivered object, 届きました is usually the better choice.

Japanese past tense often covers both:

• simple past: arrived
• present result: has arrived

So 届きました can mean:

• arrived
• has arrived

The idea is that the arrival is a completed event.

In English, the best translation depends on context, but in Japanese this past form is completely normal.

Yes. 届きました is the polite -ます form of 届く.

Levels:

• dictionary form: 届く
• polite past: 届きました
• casual past: 届いた

So:

• 修理品が届きました。 = polite
• 修理品が届いた。 = casual

The version with 届きました is appropriate in customer service, workplace communication, and neutral polite conversation.

Yes, but the nuance changes.

• 修理品が届きました。
  = The repaired item arrived.
  This simply presents the item as the thing that arrived.

• 修理品は届きました。
  = As for the repaired item, it arrived.
  This can sound like you are contrasting it with something else.

For example:

• 部品はまだですが、修理品は届きました。
  The parts have not arrived yet, but the repaired item has arrived.

So が is the more neutral choice if you are just reporting the arrival.

Yes, possibly. Japanese often leaves out information that is understood from context.

For example, English might say:

• The repaired item arrived at our office.
• The repaired item has been delivered to me.
• Your repaired item has arrived.

But in Japanese, if the context already makes that clear, you can simply say:

修理品が届きました。

The listener may already know:

• where it arrived
• who received it
• which repaired item is being discussed

This kind of omission is very common in Japanese.

Japanese does not have articles like a, an, or the.

So 修理品 can mean:

• a repaired item
• the repaired item

The context decides which is most natural in English.

That is why the same Japanese sentence might be translated differently depending on the situation.

Yes. In English, 届きました can often be translated either way depending on context.

Japanese focuses on the result that the item reached its destination. So possible translations include:

• The repaired item arrived.
• The repaired item has arrived.
• The repaired item was delivered.

If this is about shipping or receiving a package, was delivered can be very natural in English, even though the Japanese verb is still 届く.

Yes. It is short, natural, and very common in Japanese, especially in practical situations such as:

• business communication
• package tracking
• customer support
• repair service updates

Japanese often prefers short, efficient sentences like this when the context is already known. So even though it is brief, it sounds fully natural.