Mazda MX-5 (Mk3) 1.8. 4x Iridium Upgrade Spark Plugs. Labour and consequential loss claims are never accepted. Warranty: 5 Year. Thread Reach: 17.5mm. Equivalent Part Numbers: DENSO: IT16TT, OE: 1E0418110, OE: 1UXJ18110, OE: 3333704, OE: 3539125, OE: 3936373, OE: 4331810, OE: 5190932, OE: 5190933, OE: 93TF12405AA, OE: F43E12405EA, OE: F43E12405EB, OE: F43E12405EC, OE: F75E12405CA, OE: F75E12405CD, OE: GY0118110, OE: GY0218110, OE: L30318110, OE: L84518110, OE: LFY118110, OE: ZZC218110, OE: ZZC218110A.
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