M12 X 1.5 Male to 1/8" NPT Female Adapter PN:45009
M12 X 1.5 Male to 1/8" NPT Female Adapter PN:45009
M12 X 1.5 Male to 1/8" NPT Female Adapter PN:45009
M12 X 1.5 Male to 1/8" NPT Female Adapter PN:45009
M12 X 1.5 Male to 1/8" NPT Female Adapter PN:45009
M12 X 1.5 Male to 1/8" NPT Female Adapter PN:45009
M12 X 1.5 Male to 1/8" NPT Female Adapter PN:45009

M12 X 1.5 Male to 1/8" NPT Female Adapter PN:45009

$6.99
$4.99

Same thread as GM LSX coolant temp ports on head. 

M12 X 1.5 Male with sealing ring 

1/8" NPT female

6061 billet aluminum