Kaikai, 20, is back with Town for a second spell from Premier League Crystal Palace and has scored six goals in his last five appearances to lift the club two points clear of trouble.
"He's very important for us," Ogogo, 26, told BBC Radio Shropshire.
"He's got the quality and can score goals out of nothing."
Kaikai, who scored on his only appearances to date for Palace in their League Cup tie against Newcastle in September 2014, first moved to Greenhous Meadow last September and scored five times in 17 games before returning to Selhurst Park at the start of January.
Since coming back to Shropshire the goals have flowed, leading Shrewsbury boss Micky Mellon to question why he has not been part of the England Under-21 squad.
Ogogo, who is wearing the armband in the absence of suspended Nat Knight-Percival, thinks Kaikai has improved since he was last at the club.
"He's always played well but he's now adding goals to his game," said Ogogo.
Kaikai's 11th strike of the season put Town ahead league leaders against Wigan last Saturday before the title challengers hit back in style to win 5-1.
But Ogogo is staying confident over their survival chances despite having to play four sides currently in the top six in their next five games.
"One defeat in 10 games isn't bad - we've been on a good run so we need to dust ourselves down and go again," said Ogogo.
"We've got a tough run-in bit we can't look at other teams."

Ex-PC Colin Hart, 61, from Nelson, Caerphilly county, has been charged with seven counts of indecent assault and one of raping a girl under 16.
He has denied the offences, alleged to have happened between 1988 and 1990.
Cardiff Crown Court heard he allegedly started assaulting the girl from the age of 12.
But Mr Hart claimed she was "at least 17" when a sexual relationship began in 1992.

Simply titled Chuck, the 2017 release will be "comprised primarily of new, original songs" and was recorded "in various studios around St Louis".
"I've worked on this record for a long time," Berry said in a statement. "Now I can hang up my shoes!"
The veteran musician said the record was dedicated to Themetta "Toddy" Berry, his "beloved" wife of 68 years.
Two of Berry's children, Charles Berry Jr and Ingrid Berry, will be heard on the album playing guitar and harmonica respectively.
Berry Jr said the new songs "cover the spectrum from hard-driving rockers to soulful, thought-provoking time capsules of a life's work."
Other longtime members of Berry's hometown backing group - among them bass player Jimmy Marsala and pianist Robert Lohr - will play on the disc.
In a career spanning seven decades, Berry has released a string of classic songs such as Roll Over Beethoven and Johnny B Goode.
He received a lifetime achievement Grammy in 1984 and was among the first inductees to the Rock and Roll Hall of Fame in 1986.
"It is a great honour to be a part of this record and the broader legacy of Chuck Berry," said Paul Roper of Dualtone Records.
"This body of work stands with the best of his career and will further cement Chuck as one of the greatest icons of rock and roll."
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Stand-in captain Abu Ogogo says in-form striker Sullay Kaikai will play a key role in Shrewsbury Town's bid to avoid relegation from League One.
[NEXT_CONCEPT]
The jury in the trial of an ex-police officer accused of raping a schoolgirl has retired to consider its verdict.
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US rock and roll legend Chuck Berry has marked his 90th birthday by announcing his first new album in 38 years.