Denso Spark Plugs - CARiD

SPARK PLUG PART NUMBERINGSWKType of precious metalF Center: 0.55 mm diameter iridium. Ground electrode: 0.7 mmdiameter platinumP Platinum plugS 0.7 mm diameter iridiumSV 0.4 mm diameter iridiumZ 0.55 mm diameter iridiumThread Diameter andHex SizeC 12x14.0L 18x22.2 (Reach: 12 mm)M 18x25.4 (Reach: 12 mm)MA 18x20.6 (Tapered seat, Reach: 12 mm)MW 18x20.6 (Reach: 12 mm)J 14x20.6 (Projected plug)K 14x16.0 (ISO Small Hex plug)KJ 14x16.0 (ISO Projected Small Hex plug)LP 14x20.6 (Plug for LPG applications)N 10x 16.0Q 14x16.0 (Small Hex plug)QJ 14x16.0 (Projected Small Hex plug)QL 14x20.6 (Small Hex long housing plug)S 14x20.6 (Surface gap or Rotary)T 14x16.0 (Tapered seat)TR 14x20.6 (For marine applications)W 14x20.6, 14x19.0 (Compact type)X 12x18.0XE 12x14.0XU 12x16.0U 10x16.0Y 8x13.0Z 1/2PFx23.8;

1620EHeat RangeReach92181014416, 14916512, 11820610, 97, 62278, 752486, 63, 614279299.54, 59331103210.534113511.55755253A 19.0 mm (Electrode Position: 7 mm) 21.5mmB 19.0 mm (Electrode Position: 9.5 mm)C 19.0 mm (Electrode Position: 5.0 mm)D 19.0 mm (Shroud 2)E (With Gasket) 19.0 mm 20.0 mmE (Tapered Seat) 19.0 mmF 12.7 mmFE 19.0 mm (Half thread)G 19.0 mm (Shroud 2.8) 19.0 mm (Shroud 3.0)H 19.0 mm (Electrode position: 8.5 mm) 26.5 mmL 11.2 mmM 8.6 mmN (Taper seat, Half thread)17.5 mmV (Tapered seat) 25.0 mmNone 9.5 mm 11.2 mm 19.0 mm 21.5 mmNone (Tapered seat) 8.3 mm 11.2 mmA Double ground electrodesA Sland G.E. (For racing)AY Double ground electrodes with bent shape (special)B Triple ground electrodesBG Triple G.E. (shrouded)D Quadruple G.E. Projected (2.0 mm projection) Projected (1.5XRPRShape (Type)mm projection, spark position 3.5 mm)E Shroud: 25K Projected(1 mm projection)LM Compact type (Hex Size: 20.6 mm)M Shortened insulator head lengthM Compact type (Hex Size 19.0 mm)P Projected (1.5 mm projection)R With resistor

S Non-projected (0mm projection)Single iridiumT Double ground electrodesTM Double ground electrodesTN Double ground electrodesV Slant ground electrodesX Full projected(2.5 mm Projection)-U-A1111Shape (Type)-A Specialty Specification-B Specialty Specification-C Cut-back G.E-E Specialty Specification-F Specialty Specification-G Grease applied on to threads, for CNG applications-GL Platinum C.E.-L Heat resistant G.E. Thin center electrode 3.5 mm projectedinsulator for motorcycles Retracted insulator formotorcycles-M Larger G.E.-N For Yamaha and Kawasaki-P A double layer of platinum G.E. Single platinum-R 10K ohm resister plug-S Semi-surface gap discharge type-S Stainless gasket-TP Taper-cut, single platium plug-U U-Groove G.E-US Star-shaped C.E-V 1.3 mm diameter, nickel C.E.-Z Taper cut-ZU ZU plugReachA 19.0 mm (Electrode Position: 7 mm) 21.5mmB 19.0 mm (Electrode Position: 9.5 mm)C 19.0 mm (Electrode Position: 5.0 mm)D 19.0 mm (Shroud 2)E (With Gasket) 19.0 mm 20.0 mmE (Tapered Seat) 19.0 mmF 12.7 mmFE 19.0 mm (Half thread)G 19.0 mm (Shroud 2.8) 19.0 mm (Shroud 3.0)H 19.0 mm (Electrode position: 8.5 mm) 26.5 mmL 11.2 mmM 8.6 mmN (Taper seat, Half thread) 17.5 mmV (Tapered seat) 25.0 mmNone 9.5 mm 11.2 mm 19.0 mm 21.5 mmNone (Tapered seat) 8.3 mm 11.2 mm A Double ground electrodesA Sland G.E. (For racing)

IUPlug TypeThread Diameter andHex SizeAY Double ground electrodes with bent shape (special)B Triple ground electrodesBG Triple G.E. (shrouded)D Quadruple G.E. Projected (2.0 mm projection) Projected (1.5mm projection, spark position 3.5 mm)E Shroud: 25K Projected (1 mm projection)LM Compact type (Hex Size: 20.6 mm)M Shortened insulator head lengthM Compact type (Hex Size 19.0 mm)P Projected (1.5 mm projection)R With resistorS Non-projected (0mm projection) Single iridiumT Double ground electrodesTM Double ground electrodesTN Double ground electrodesV Slant ground electrodesX Full projected (2.5 mm Projection)-A Specialty Specification-B Specialty Specification-C Cut-back G.E-E Specialty Specification-F Specialty Specification-G Grease applied on to threads, for CNG applications-GL Platinum C.E.-L Heat resistant G.E. Thin center electrode 3.5 mm projectedinsulator for motorcycles Retracted insulator for motorcycles-M Larger G.E.-N For Yamaha and Kawasaki-P A double layer of platinum G.E. Single platinum-R 10K ohm resister plug-S Semi-surface gap discharge type-S Stainless gasket-TP Taper-cut, single platium plug-U U-Groove G.E-US Star-shaped C.E-V 1.3 mm diameter, nickel C.E.-Z Taper cut-ZU ZU plug16512, 111020610, 992278, 78248

27AHeat RangeSpecial Design6, 63, 617, 62794, 595299.557431103210.555334113511.553A Slant electrode, No U-Groove, No taper cutB Projected insulator (1.5mm)C No U-GrooveD No U-Groove, Inconel ground electrodeES Stainless steel gasketF SpecialG Stainless steel gasketJ Spark position: 5 mmK Spark position: 4 mmL Spark position: 5 mmM Spark position: 4 mm, for LPG applicationsT For LPG applicationsY 0.8 mm gapZ Taper cutTT Twin-Tip2

HomeSPARK PLUG ELECTRODE CONFIGURATION IDENTIFICATIONIridium PowerIridium Long LifeExample: IK16Example: SK16R-P11, SK20R11, With an Ultra-fine Iridium AlloyFK20HR11Center Electrode Employing a high Developing the world’s pioneeringmelting point iridium alloy for the0.7mm dia. Ultra-fine Iridium alloy,center electrode tip, a fine diameterignitability and lifetime are improvedof 0.4mm has been realized. This finedramatically.electrode has led to a lower sparkvoltage and a large increase inignitability, which draws even moreoutput and accelerator responsefrom the engine. (Melting Point:Iridium: 2454º C, Platinum: 1769º C).U-GrooveExample: W16EX-U With a U-Groove ground electrode,large ignition energy can beobtained, easily igniting even leanmixtures. Because it is fully projected (2.5mminsulator projection), carbon foulingis reduced, and smooth starting andacceleration performance arerealized.

Double PlatinumExample: PK20R11 Platinum is used in both the centerelectrode and the ground electrode. By making the center electrode(1.1mm dia) and by using a platinumtip, fuel consumption, drivability, anddurability have been increased.Iridium TTExample: 1W16TT Iridium TT Twin-Tip Technology wasdeveloped from the OriginalEquipment Specification SuperIgnition Plug (SIP) design, fusing ourpatented 0.4mm diameter IridiumRhodium alloy Center Electrode withan OE style 0.7mm Platinum TipGround Electrode. Combines the power and torque ofa high performance plug with theendurance of a long life originalequipment spark plug over 100,000miles.Platinum TTExample: PW16TT Platinum TT Twin-Tip Technologyenables faster flame propagationfor more complete combustion. 1.1mm PT Center Electrode with aTitanium-Enhanced TipGround Electrode. Improved Fuel Economy, betteracceleration and faster starts.Extended PlatinumExample: PKJ20CR-L11 By extending the spark position intothe combustion chamber, thecombustion efficiency is increasedand fuel consumption and drivabilityare improved.Dual Electrode Platinum Example:PK20TR11 The parts of the center electrodefacing the ground electrodes havebeen platinum tipped. The dual electrode constructionresults in a lower required voltageduring the plus ( ) discharge.Single PlatinumExample: Q20PR-P11, K16PR-TP11 Only the center electrode isplatinum tipped (1.1mm dia) whichincreases fuel consumption,drivability, and durability K16PR-TP11 has had the groundelectrode taper cut, furtherincreasing ignitability.Semi-Surface Gap for RotaryEnginesExample: J16AR-U11 Employing a semi-surface gapdischarge, ignitability, foulingresistance, and durability have beenExtendedExample: KJ20CR11, KJ20CR-U11 Using a U-grooved groundelectrode, a large ignitionperformance is obtained, allowingeven lean mixtures to be ignitedExtendedExample: KJ20CR-L11 For Mazda and Mitsubishi Vehicles. KJ20CR11 has no U-groove. KJ20CRU11 has a U-groove.

increased. Reduced voltage loss using a 7-ribdesign.Iridium Long Life SIP(Super Ignition Plug)Example: FK20HR11, FXE20HR11 Revolutionary DENSO Needle-toNeedle OE Technology Fine wire 0.55mm Iridium Alloycenter electrode 0.7mm Platinum needle tippedground electrode For exceptional performance anddurabilityShrouded Semi-Surface GapDouble ElectrodeExample: K20DTR-S11, W20DTRS11 In addition to a semi-surface gapconstruction, the end of thethreaded portion has been extendedinto the combustion chamber, and ashroud has been attached toimprove fouling resistance. Used for Daihatsu and Subaru.easily. The spark position is extended intothe ignition chamber, improvingcombustion efficiency, fuelconsumption, and drivability.Semi-Surface GapExample: W20EKR-S11, W20EPRS11 Using a semi-surface discharge,ignitability and fouling resistance areincreased. W20EKR-S11 are for Honda vehicles,while W20EPR-S11 are for Mitsubishivehicles.Triple ElectrodeExample: K22PB, W20EPB Durability is increased with tripleground electrodes. For Audi, VW, Citroen, Fiat,Mercedes-Benz, Renault.Semi-Surface Double ElectrodeExample: W20ETR-S11 A double ground electrode with a1mm gap is used and foulingresistance is improved. Using a short opposed-type dualground electrode, excellentdurability is obtained. Improved ignitability due to fullprojection. Used for Toyota and Daihatsu.Double Platinum for D.I.Example: PK20R-P11 To prevent wear during plus ( )discharge, the size of the platinumhas been increased on the groundelectrode.

Shrouded Semi-Surface GapDouble ElectrodeExample: K20DTR-S11, W20DTRS11 In addition to a semi-surface gapconstruction, the end of thethreaded portion has been extendedinto the combustion chamber, and ashroud has been attached toimprove fouling resistance. Used for Daihatsu and Subaru.Triple ElectrodeExample: K22PB, W20EPB Durability is increased with tripleground electrodes. For Audi, VW, Citroen, Fiat,Mercedes-Benz, Renault.Double Platinum for D.I.Example: PK20R-P11 To prevent wear during plus ( )discharge, the size of the platinumhas been increased on the groundelectrode.

HomeAFTERMARKET PERFORMANCE CYLINDER HEAD APPLICATION CHARTCYLINDER HEAD MANUFACTURERSPECIFICATION SHEETRECOMMENDATIONDENSO IRIDIUMPOWER EQUIVALENTAFR AIR FLOW RESEARCH205cc LS1, Mongoose Street HeadAC 41-974 PlatinumIT16225cc LS1 Mongoose Strip HeadAC 41-974 PlatinumIT16180cc SBC Street HeadAC FR3LSIK16180cc LT1 Street HeadAC FR3LSIK16195cc SBC Street HeadAC FR3LSIK16195cc LT4 Street HeadAC FR3LSIK16305/315/325/335/345/357cc Magnum BBCCH C59C, Autolite 3932IK27165/185cc SBF Outlaw Street HeadsAutolite 3924IK16205/224cc SBF Outlaw Race HeadsAutolite 3922IK22165/185cc SBF Street/Strip Outlaw HeadsAutolite 3924IK16BBC, Big Brodie seriesNGK B9ESIW24 gas, IW27 alchoholC.A.R.B. legal HeadsCh14YC or AL3924IK16Big Chief, ALL.750” reach, gasket, Ch C57C/C57YCIK31, IK01-31Big M - Head.750” reach, gasket, Ch C59C /C59YC StreetIK27, Street app IK16BRODIXDARTRC12YCFORD 20 Degree.750” reach, gasket, Ch C59C/C59YCIK27Iron Eagle, 308cc & 345 cc BBC.750” reach, gasket, Ch C59C /C59YC StreetIK27, Street app IK16RC12YC