NGK BPR5EP-11 / BPR5EP11 / 3971 VX Original Platinum Spark Plug Replaces N9YC OE001 P16R ( 3971 )NGK VX Spark Plugs feature and extremely fine centre electrode of platinum coupled with a sharp pointed side electrode, deigned for super igniting performance.It guarantees excellent starting, acceleration, power and optimum performance for engines of various types.BOX DIMENSIONSHeight (mm): 85Width (mm): 24Length (mm): 22 If you are unsure as to whether this is the correct part for your vehicle, please don\'t hesitate to contact us. Alternatively please use the cross reference table above.