Howarth won 19 caps for Wales, while he also represented the All Blacks, New Zealand Maori, Auckland, Sale and Newport during a lengthy playing career.
He retired in 2003 and headed back to New Zealand, where he filled coaching roles with the likes of Auckland in the National Provincial Championship, Auckland Blues as an assistant, and also the Maori.
Howarth will link up with the Wasps squad next month, taking over from Paul Turner, whose one-year consultancy contract with the Aviva Premiership club ended recently.
"I have followed Shane's coaching career since I played with him for Wales, and he comes strongly recommended from the likes of (former All Blacks and Wales coach) Graham Henry," Wasps rugby director David Young said.
"We have a similar philosophy on the game, and I think we will hugely benefit from his intimate knowledge of both the northern and southern hemisphere."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
$29.99
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.
