2026-08-15 · 5 min read
BMW X4 Spark Plugs Malaysia — N20/N55/B48/B58
F26 N20: 4 iridium plugs every 60,000 km. F26 N55 xDrive35i: 6 plugs (inline-6) every 60,000 km. G02 B48: 4 plugs every 60,000 km. G02 M40i B58: 6 plugs every 60,000 km. Malaysia cost: 4-cyl RM 280–480; 6-cyl RM 450–700. Inspect ignition coils at same time.
X4 Spark Plugs
- B48 (4-cyl): 4 × NGK ILZKBR7B8G — every 60,000 km
- B58 (6-cyl, M40i): 6 × NGK iridium — every 60,000 km
- Cost: RM 380–520 (B48) / RM 600–850 (B58)
Iridium Plugs — Worth the Premium
The X4's N20/B48 (F26) or B48/B58 (G02) engine requires iridium spark plugs — these are more expensive than standard copper or platinum plugs but last significantly longer (60,000 km vs 20,000 km). Using cheaper non-iridium plugs in a BMW direct-injection turbo engine causes rough idle, misfires, and can trigger coilpack damage. At 60,000 km intervals, iridium plugs actually cost less per kilometre than cheaper alternatives. Always replace all plugs as a set and inspect coils while the engine is open.