Big Crusaders prop Wyatt Crockett is keen to stay in the All Blacks mix with a fresh contract taking him through to the end of 2018.

New Zealand Rugby continue to make major gains in retaining key All Blacks with Crusaders prop Wyatt Crockett the latest to re-sign.

With 36 tests since his debut in 2009, Crockett remains a key figure in the All Blacks engine room.

The 32-year-old said he didn't hesitate to stay in New Zealand, signing on until the end of the 2018 season.

"Canterbury, the Crusaders and the All Blacks have been my teams since day one. I can't imagine ever pulling on the jersey for any other teams, so I always knew that I would be playing out my rugby career here," Crockett said in a statement.

"I have been living my dream playing footy here and I feel so privileged to be able to continue living that dream for the next few years at least.

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"I am really excited to be able to help the Crusaders re-establish themselves as a leading force in Super Rugby over the coming years and there are some incredibly exciting opportunities ahead with the All Blacks, such as the upcoming Rugby World Cup and the Lions tour that I would love to have the chance to be a part of."

Crockett has come through the national age-grade teams and was named Super Rugby's New Zealand player of the year in 2011.

He recently became the most capped-Crusader, surpassing Corey Flynn's record of 151 games.

Crockett joins fellow All Black Jerome Kaino in committing through until 2018.

Julian Savea, Brodie Retallick and Dane Coles recently signed four-year deals through to 2019, while Kieran Read, Sam Whitelock, Owen Franks, Cory Jane, Israel Dagg, Aaron Cruden, Ben Smith, Charlie Faumuina, Steven Luatua and Malakai Fekitoa are locked in until 2017.

Sonny Bill Williams, Aaron Smith, Augustine Pulu, Beauden Barrett, Luke Romano, TJ Perenara, Dominic Bird and Patrick Tuipulotu are contracted until 2016.

All Blacks head coach Steve Hansen welcomed Crockett's loyalty.

"It's great to have a senior pro like him committing himself to New Zealand rugby. Crocky's been a loyal servant to New Zealand Rugby for many years now and been a great asset and team man not only in the All Blacks but also his Super team," Hansen said.

Crusaders coach Todd Blackadder hailed Crockett's scrum work, saying he had taken that "to the next level" and added that he also had talents beyond the traditional skill set of a prop which allowed the red-and-blacks to use him almost as an additional loose forward.