NGK BKR5EKU / 3964 Standard Spark Plug Replaces FLR8LDCU+ FR8LDC OE085 OE120 RC89TMC ( 3964 )This is the workhorse, the plug that is at the heart of smooth-running engines around the world. OEM quality Triple-gasket sealing process Consistent performance Plug of choice in millions of vehiclesBOX 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.