NORTH Melbourne's four-pack of recruits will not only be in fresh colours in 2019, but also new jumper numbers.

Ex-Port Adelaide pair Jared Polec and Jasper Pittard, former Demon Dom Tyson and one-time Sun Aaron Hall will all don numbers they've never previously worn in the AFL.

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Polec, who signed a lucrative five-year deal to join the Roos, will have No.13 on his back after wearing No.4 in 16 games for Brisbane and No.21 in 90 games at the Power.

The 26-year-old looms as a major addition for a midfield crying out for line-breaking ability and dare.

New Swan Ryan Clarke most recently wore 13 at North, but ex-captain John Law (215 matches), dual premiership player Gary Cowton (125) and hard-nut Leigh Adams (104) all played triple-figure games in it.

Pittard, 27, never played in anything other than No.29 in his Port days, but slides over to No.17 at Arden St, last worn by Aaron Mullett in a senior match in 2017.

The great Allen Aylett made the number famous across 220 games between 1952 and 1964, kicking 311 goals, serving as captain, winning three Syd Barker medals and twice being an All Australian.

Aylett, who was club president in separate stints decades apart, is also in North Melbourne's Team of the Century.

Tyson, 25, inherits the No.21 from delisted defender Alex Morgan, who is holding out hope of a rookie list reprieve, after being in No.12 at Melbourne and No.29 at Greater Western Sydney.

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Corey Jones is the games record-holder (157) at the Kangaroos in Tyson's new number, but former star midfielder John Byrne, who played in the 1977 flag, also gave it prestige in 98 appearances.

Hall, who turns 28 in November, will have No.43 on his back in 2019 after wearing 33 in 103 games for Gold Coast.

No North Melbourne footballer had played more than 13 games in the number until Sam Gibson amassed 130 matches in it from 2012 to 2017.