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  2. Auto Parts
  3. Ignition
  4. Secondary Ignition
  5. Spark Plug
  6. NGK 3981 for 1973

NGK 3981 Spark Plug
for 1973 (please select make/model) -L U/K

NGK 3981 Spark Plug - 1973 Image 1
NGK 3981 Spark Plug - 1973 Image 2
NGK 3981 Spark Plug - 1973 Image 3
NGK 3981 Spark Plug - 1973 Image 4
NGK 3981 Spark Plug - 1973

NGK
Brand:NGK
Part Number: 3981
UPC: 00087295139813
Weight: 0.06 lbs
Condition:New



On Sale:

$7.53

Availability:
51 in Stock
Warehouse: US-4
Quantity:

Product Information

Description:

Get the NGK 3981 Spark Plug for your 1973. Buy now and secure your purchase online!

NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.

Features and Benefits:

  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
  • SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal

Specifications:

Center Electrode Core Material:
Copper
Center Electrode Tip Material:
Iridium
Electrical Terminal Type:
Removable Nut
Ground Configuration:
Standard
Ground Electrode Core Material:
Nickel
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Taper Cut
Hex Size:
13/16 in.
Insulator Height:
55.00 mm
Manufacturer Heat Range:
9
Part Number:
BR9EIX
Pre-Gap Size:
.032 in.
Reach:
.75 in.
Resistance:
5000.0 Ohm
Seat Type:
Flat
Stock Number:
3981
Thread Diameter:
14.00 mm
Autolite #:
XS4062
Autolite #:
XS4062DP
Bosch #:
W3CP
Bosch #:
W3CS
Bosch #:
WR3CP
Bosch #:
WR3CS
Brisk #:
L12W
Champion Spark Plug #:
N86G
Champion Spark Plug #:
QN2G
Champion Spark Plug #:
RN2G
DENSO Auto Parts #:
3981
DENSO Auto Parts #:
4048
DENSO Auto Parts #:
4166
DENSO Auto Parts #:
5317
DENSO Auto Parts #:
6901
DENSO Auto Parts #:
IW27
DENSO Auto Parts #:
W27EPT
DENSO Auto Parts #:
W27ES-GU
DENSO Auto Parts #:
W27ES-ZU
DENSO Auto Parts #:
W27ESR-ZU
Daihatsu #:
999-06910-X9-013
Honda #:
98079-59644
Honda #:
98079-59646
Kawasaki #:
92070-041
Kawasaki #:
92070-1037
Kawasaki #:
92070-1054
Kawasaki #:
92070-1212
Kawasaki #:
92070-1213
Kawasaki #:
92070-1227
Kawasaki #:
92070-1228
Kawasaki #:
92070-1271
Kawasaki #:
92070-3002
Magneti Marelli #:
CWP10L
Motorcraft #:
AG603
Motorcraft #:
AG603C
Motorcraft #:
AG701X
Motorcraft #:
AGR701X
NGK #:
3981
Suzuki #:
09482-00097
Suzuki #:
09482-00115
Suzuki #:
09482-00209
Suzuki #:
09482-00500
Suzuki #:
99000-69835-BR9
Suzuki #:
99000-69837-BR9
Suzuki #:
99000-79A45-B9E
Suzuki #:
99000-79A45-BR9
Suzuki #:
99000-79S19-BR9
Yamaha #:
90793-20003
Yamaha #:
90793-20118
Yamaha #:
90793-20161
Yamaha #:
90793-2B118
Yamaha #:
9079E-NG002
Yamaha #:
9079E-NG005
Yamaha #:
94701-00N02
Yamaha #:
94702-00193
Yamaha #:
94703-00075
Yamaha #:
94703-00114
Yamaha #:
94703-00277
Yamaha #:
94709-00193
Country of Origin:
JP

Manufacturer Warranty:

2 Months

Select a vehicle to narrow NGK 3981 Spark Plug fitment info!

Last Updated: 08/31/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes

1973

 

1973

 
Arctic Cat Panther 440

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.020
 

Arctic Cat Panther 440



-L U/K Iridium IX Spark Plug
Gap 0.020

1 Per Vehicle

1976

 

1975

 

1974

 

1973

 

1976

 

1975

 

1974

 

1973

 
Honda CR250M

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.024
 

Honda CR250M



-L U/K Iridium IX Spark Plug
Gap 0.024

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Sno-Jet SST 340

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.020
 

Sno-Jet SST 340



-L U/K Iridium IX Spark Plug
Gap 0.020

1 Per Vehicle

1976

 

1975

 

1974

 

1973

 

1976

 

1975

 

1974

 

1973

 
Sno-Jet SST 440

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.020
 

Sno-Jet SST 440



-L U/K Iridium IX Spark Plug
Gap 0.020

1 Per Vehicle

1973

 

1973

 
Sno-Jet Star-Jet 338

-L U/K
1
 
Iridium IX Spark Plug
SX338
Gap 0.016
 

Sno-Jet Star-Jet 338



-L U/K Iridium IX Spark Plug
SX338
Gap 0.016

1 Per Vehicle

1973

 

1973

 
Sno-Jet Star-Jet 433

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.016
 

Sno-Jet Star-Jet 433



-L U/K Iridium IX Spark Plug
Gap 0.016

1 Per Vehicle

1973

 

1972

 

1973

 

1972

 
Yamaha EW643

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.020
 

Yamaha EW643



-L U/K Iridium IX Spark Plug
Gap 0.020

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Yamaha GP292

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.016
 

Yamaha GP292



-L U/K Iridium IX Spark Plug
Gap 0.016

1 Per Vehicle

1973

 

1972

 

1973

 

1972

 
Yamaha RT2

-L U/K
1
 
Iridium IX Spark Plug
Exc. MX
Gap 0.028
 

Yamaha RT2



-L U/K Iridium IX Spark Plug
Exc. MX
Gap 0.028

1 Per Vehicle

1973

 

1973

 
Yamaha RT3

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.028
 

Yamaha RT3



-L U/K Iridium IX Spark Plug
Gap 0.028

1 Per Vehicle

1973

 

1973

 
Yamaha SR433

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.016
 

Yamaha SR433



-L U/K Iridium IX Spark Plug
Gap 0.016

1 Per Vehicle

1973

 

1973

 
Yamaha SR643

-L U/K
1
 
Iridium IX Spark Plug
Gap 0.016
 

Yamaha SR643



-L U/K Iridium IX Spark Plug
Gap 0.016

1 Per Vehicle

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