(Recasts paragraph 1, adds comments and updates stock prices)

March 28 (Reuters) - Japan's Nikkei average fell to a

two-week low on Friday in a broad sell-off, with automakers

tracking losses of their Wall Street counterparts, as concerns

over the potential impact of U.S. President Donald Trump's trade

tariffs weighed.

As of 0207 GMT, the Nikkei was down 831 points, or

2.2%, at 36,968.86, its lowest level since March 14.

The index was pulled down by a majority of stocks going

ex-dividend, resulting in a loss of around 300 points,

strategists said.

The broader Topix slipped 2.28% to 2,751.26.

"Uncertainties about the impact of the U.S. tariff plans

weighed on sentiment," said Naoki Fujiwara, senior fund manager

at Shinkin Asset Management.

Automakers Toyota Motor ( TM ) slumped 4.54%, while Honda

Motor ( HMC ) dropped 4.7%. Both followed the overnight

declines of General Motors and Ford.

Earlier this week, Trump declared his plan to implement a

25% tariff on imported cars and light trucks, effective from

April 3, while the duty on auto parts begins on May 3.

Investors also braced for a wave of reciprocal tariffs that

Trump plans to unveil on Wednesday, although he has hinted there

may be room for flexibility.

All of the Tokyo Stock Exchange's 33 industry sub-indexes

fell, with the brokerage sector falling 4.4% to be

the worst performer.

Nomura Holdings ( NMR ) dropped 4.73%, making it the worst

performer in the Nikkei.

The transport index lost 3.9%.

"Even value shares, which had been supporting local

equities, fell today because investors had secured dividend

payouts by Thursday," said Fujiwara.

Thursday was the last day to secure dividend payouts for

companies with a fiscal year ending in March. Investors scooped

up value shares, which pay higher dividends than growth stocks.

Banking shares declined, with Mitsubishi UFJ Financial Group ( MUFG )

and Mizuho Financial Group ( MFG ) and Sumitomo Mitsui

Financial Group ( SMFG ) slipping 2.82%, 3.99% and 3.2%,

respectively.