Denso ke spark plug iridium 3pin wala jo aata hai mene apni indus corolla 1994 model me lgaya hai 1600cc engine hai kya ye best hain ya koi dose lgwaon is se pehle mere pas ye jo ap video me dikha rhe NKG G power wale lage hwe thy problem to in se koi nahi tha pr 40hzar kilometres se ope chala lya tha in ko is lye nikal kr rakhe hain kharab nahi hwe hain abi tak itne ap btayen kya kron