like every1 in lhr faced, u'll have to go there n spend some 2-3hr n in the end meet the guy with topi and tasbeeh in hand asking for bribe openly
after that postman will deliver it to ur home
should have asked the seller to write something else, there's 100% custom on car parts including tracker to discourage its import
he'll take it home with him 
hahaha
when he came to my house, light was gone so after waiting for me, he called me n gave it to me no throws 
u r lucky that he atleast threw them n not kept them, well if there's no proper tracking i,e simple post then he'll surely keep it for himself
i guess if u order more then giving him some chai pani wont b such a bad idea, atleast he'll keep delivering