3 GB P F R 5 A -11 Plug type Thread diameter Thread length Seat configuration Hex size Resistor Heat rating Design Spark gap DI High ignitability plug: Double fine electrodes F ∅ 14.0 19.0 Gasket Hex 16.0 R Resistor 2 Hot type Cold type A,B,C… Suffix code None Motorcycle : 0.7∼0.8 FE ∅ 14.0 19.0 Gasket Hex 16.0 4 Car : 0.8∼0.9 I Double iridium spark plug G ∅ 14.0 19.0 Gasket Hex 20.8 5 -7 0.7 L Long thread reach plug J ∅ 12.0 19.0 Gasket Hex 18.0 6 -9 0.9 P Double platinum spark plug K ∅ 12.0 19.0 Gasket Hex 16.0 7 I Iridium central electrode -10 1.0 S High ignitability plug : thin square tip type KA ∅ 12.0 19.0 Gasket Hex 14.0 8 -11 1.1 KB ∅ 12.0 19.0 Gasket Bi-Hex 14.0 (Bi-hexagonal *) 9 IX Iridium IX spark plug -13 1.3 Z Projected firing end 10 P Platinum central electrode -15 1.5 Above alphabets are occasionally used in combination <Example>ILFR···, PLZFR···, When „L“ is included, priority is given to „L“ (long reach)“ in thread length. <Example> *Gasket type FR5AP : Thread length 19.0mm LFR5AP-11 : Thread length 26.5mm *Tapered seat type PTR5C-13 : Thread length 17.5mm PLTR6A-10G : Thread length 25.0mm KE ∅ 12.0 19.0 Gasket Hex 16.0 KF ∅ 12.0 19.0 Gasket Hex 14.0 *When there is „I“ or „P“ at the beginning of part number ( „I“ or „P“ after heat rating becomes suffix code.) <Example> IZFR6P8 is Iridium spark plug I : Iridium P : Suffix code *<Exception> ZFROP-G is nickel spark plug -A Non gasket KG ∅ 12.0 19.0 Gasket Bi-Hex 14.0 (Bi-hexagonal *) -D Metal shell : nickel plating -E Special resistance L ∅ 10.0 12.7 Gasket Hex 16.0 -G Copper cored ground electrode M ∅ 10.0 19.0 Gasket Hex 16.0 -H Special thread shape MA ∅ 10.0 19.0 Gasket Hex 14.0 -J 2 ground-electrode MF ∅ 10.0 19.0 Gasket Hex 14.0 -K Vibration-resistance ground electrode NA ∅ 12.0 17.5 Tapered seat Hex 14.0 T ∅ 14.0 17.5 Tapered seat Hex 16.0 -N Special ground electrode U ∅ 14.0 11.2 Tapered seat Hex 16.0 -Q 4-ground-electrode W ∅ 18.0 10.9 Tapered seat Hex 20.8 -S Special gasket X ∅ 14.0 9.5 Gasket Hex 20.8 -T 3-ground-electrode Y ∅ 14.0 11.2 Tapered seat Hex 16.0 -U Semi-surface discharge type *Exception TR5A-10, TR5A-13, TR5B-13, TR6B-10, TR6B-13, PTR5A-10, PTR5A-13 : Thread length 25.0mm *Bi-hexagonal socket is necessary. *FE, KE, KF, KG, MF : Longer exposed insulator length type IX-P Iridium MAX plug LPG 1-8 LaserLine spark plugs range for gas engines P F R 5 A - 11 RE 7 C -L Plug type Heat rating Design Spark gap RE Plug for rotary engines 5 Hot type Cold type A,B,C···Suffix code -L Leading side SD Plug for rotary engines (Semi-surface discharge gap) 6 -T Trading side 7 8 9 10 11 HB 6 A IX -11 P Plug type Heat rating Thread diameter Thread length Seat configuration Hex size Spark gap HB HYBD (3-ground-electrode hybrid type) 4 Hot type Cold type A ∅ 14.0 20.5 Gasket Hex 16.0 IX -8 0.8 5 B ∅ 14.0 19.0 Gasket Hex 16.0 -9 0.9 6 -10 1.0 7 -11 1.1 8 -13 1.3 DF 6 H -11 A Plug type Heat rating Thread diameter Thread length Seat configuration Hex size Spark gap DF High ignitability plug (Double fine electrodes) 4 Hot type Cold type A ∅ 14.0 19.0 Gasket Hex 16.0 -8 0.8 A,B,C… Suffix code 5 B ∅ 14.0 26.5 Gasket Hex 16.0 -9 0.9 DFH High ignitability plug (DF + Hybrid type) 6 C ∅ 12.0 26.5 Gasket Hex 14.0 -10 1.0 7 *DF6H-11A : Thread length 28.0mm -11 1.1 8 -13 1.3 9 -15 1.5 → → Unit : mm RE 7 C L HB 6 A IX - - - 11 P DF 6 H 11 A Bi-hexagonal Hexagonal How to read our part number: Spark Plugs 3 GB P F R 5 A -11 Plug type Thread diameter Thread length Seat configuration Hex size Resistor Heat rating Design Spark gap DI High ignitability plug: Double fine electrodes F ∅ 14.0 19.0 Gasket Hex 16.0 R Resistor 2 Hot type Cold type A,B,C… Suffix code None Motorcycle : 0.7∼0.8 FE ∅ 14.0 19.0 Gasket Hex 16.0 4 Car : 0.8∼0.9 I Central electrode: Iridium Ground electrode: Platinum G ∅ 14.0 19.0 Gasket Hex 20.8 5 -7 0.7 L Long thread reach plug J ∅ 12.0 19.0 Gasket Hex 18.0 6 -9 0.9 P Double platinum spark plug K ∅ 12.0 19.0 Gasket Hex 16.0 7 I Iridium central electrode -10 1.0 S High ignitability plug : thin square tip type KA ∅ 12.0 19.0 Gasket Hex 14.0 8 -11 1.1 KB ∅ 12.0 19.0 Gasket Bi-Hex 14.0 (Bi-hexagonal *) 9 IX Iridium IX spark plug -13 1.3 Z Projected firing end 10 P Platinum central electrode -15 1.5 Above alphabets are occasionally used in combination <Example>ILFR···, PLZFR···, When „L“ is included, priority is given to „L“ (long reach)“ in thread length. <Example> *Gasket type FR5AP : Thread length 19.0mm LFR5AP-11 : Thread length 26.5mm *Tapered seat type PTR5C-13 : Thread length 17.5mm PLTR6A-10G : Thread length 25.0mm KE ∅ 12.0 19.0 Gasket Hex 16.0 KF ∅ 12.0 19.0 Gasket Hex 14.0 *When there is „I“ or „P“ at the beginning of part number ( „I“ or „P“ after heat rating becomes suffix code.) <Example> IZFR6P8 is Iridium spark plug I : Iridium P : Suffix code *<Exception> ZFROP-G is nickel spark plug -A Non gasket KG ∅ 12.0 19.0 Gasket Bi-Hex 14.0 (Bi-hexagonal *) -D Metal shell : nickel plating -E Special resistance L ∅ 10.0 12.7 Gasket Hex 16.0 -G Copper cored ground electrode M ∅ 10.0 19.0 Gasket Hex 16.0 -H Special thread shape MA ∅ 10.0 19.0 Gasket Hex 14.0 -J 2 ground-electrode MF ∅ 10.0 19.0 Gasket Hex 14.0 -K Vibration-resistance ground electrode NA ∅ 12.0 17.5 Tapered seat Hex 14.0 T ∅ 14.0 17.5 Tapered seat Hex 16.0 -N Special ground electrode U ∅ 14.0 11.2 Tapered seat Hex 16.0 -Q 4-ground-electrode W ∅ 18.0 10.9 Tapered seat Hex 20.8 -S Special gasket X ∅ 14.0 9.5 Gasket Hex 20.8 -T 3-ground-electrode Y ∅ 14.0 11.2 Tapered seat Hex 16.0 -U Semi-surface discharge type *Exception TR5A-10, TR5A-13, TR5B-13, TR6B-10, TR6B-13, PTR5A-10, PTR5A-13 : Thread length 25.0mm *Bi-hexagonal socket is necessary. *FE, KE, KF, KG, MF : Longer exposed insulator length type IX-P Iridium MAX plug LPG 1-8 LaserLine spark plugs range for gas engines P F R 5 A - 11 RE 7 C -L Plug type Heat rating Design Spark gap RE Plug for rotary engines 5 Hot type Cold type A,B,C···Suffix code -L Leading side SD Plug for rotary engines (Semi-surface discharge gap) 6 -T Trading side 7 8 9 10 11 HB 6 A IX -11 P Plug type Heat rating Thread diameter Thread length Seat configuration Hex size Spark gap HB HYBD (3-ground-electrode hybrid type) 4 Hot type Cold type A ∅ 14.0 20.5 Gasket Hex 16.0 IX -8 0.8 5 B ∅ 14.0 19.0 Gasket Hex 16.0 -9 0.9 6 -10 1.0 7 -11 1.1 8 -13 1.3 DF 6 H -11 A Plug type Heat rating Thread diameter Thread length Seat configuration Hex size Spark gap DF High ignitability plug (Double fine electrodes) 4 Hot type Cold type A ∅ 14.0 19.0 Gasket Hex 16.0 -8 0.8 A,B,C… Suffix code 5 B ∅ 14.0 26.5 Gasket Hex 16.0 -9 0.9 DFH High ignitability plug (DF + Hybrid type) 6 C ∅ 12.0 26.5 Gasket Hex 14.0 -10 1.0 7 *DF6H-11A : Thread length 28.0mm -11 1.1 8 -13 1.3 9 -15 1.5 → → Unit : mm RE 7 C L HB 6 A IX - - - 11 P DF 6 H 11 A Bi-hexagonal Hexagonal How to read our part number: Spark Plugs 3 EN 3
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