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AUTOLITE 4123 Spark Plug - Copper Resistor, 13/16-inch Hex, Standard, Nickel

4123 by AUTOLITE - Spark Plug - Copper Resistor, 13/16-inch Hex, Standard, Nickel
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4123 by AUTOLITE - Spark Plug - Copper Resistor, 13/16-inch Hex, Standard, Nickel

MSRP: $4.23

$3.42

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AUTOLITE 4123 Part Description

Manufacturer

AUTOLITE

Product Description

Autolite 4123 Copper Resistor Spark Plug

Features & Benefits

  • Copper core design promotes reliable combustion during marathon operating sessions
  • Nickel-enriched electrode withstands chemical attack from fuel byproducts
  • Insulator ribs help control voltage movement when engines shake aggressively
  • Terminal stud secures a strong electrical link in high-voltage cycles
  • Ceramic housing retains structural and insulating properties during intense chamber heat

Autolite Spark Plug 

The Autolite Spark Plug’s copper core electrode manages heat buildup and improves resilience in combustion chambers exposed to carbon deposits or fluctuating loads. The high-alumina multi-rib insulator delivers strong dielectric strength, helping prevent flashover that may interrupt engine rhythm. A heat-fused glass composite resistor seal ensures EMI suppression and a 100-percent gas-tight barrier. High-nickel alloy electrodes preserve firing edges despite repeated electrical and chemical exposure. The nickel-plated shell contributes additional corrosion resistance, especially valuable in motors exposed to moisture or infrequent shutdown cycles. The Autolite 4123 is well-adapted for applications requiring consistent firing throughout extended service intervals.

AUTOLITE 4123 Specifications

Product Attributes

Resistance 5000 82
Ground Electrode Tip Design Standard
Ground Electrode Core Material Nickel
Electrical Terminal Type Removable Nut
Center Electrode Core Material Copper
Center Electrode Tip Material Nickel
Pre-Gap Size 0.028 IN
Ground Electrode Quantity 1
Hex Size 21 MM
Seat Type Flat
Reach 0.5 IN
Thread Diameter 14 MM
Insulator Material Ceramic
Resistor Type Yes
Ground Electrode Tip Material Nickel
Center Electrode Design Standard
Center Electrode Projection Mid Projection
Washer(s) Included Yes
Grade Type Regular
Hex Size 13/16 IN
Manufacturer Heat Range 11
Skirt Yes
Hex Type Hex
Indexed No
Pre-Gap Size 0.7111999999999999 MM
Reach 12.7 MM
Hex Size (Inch) 13/16
Pre-Gap Size (Millimeter) 0.7
Reach (Millimeter) 13
Resistance (Ohm) 5000
Thread Diameter (Millimeter) 14

Additional Information

Country of Origin (Primary) CN
Harmonized Tariff Code (Schedule B) 8511100000
Warranty Time 2
Warranty Time UOM YR
Harmonized Tariff Code (HTS) 8511100000
UPC 00009100254948
UNSPSC 26101732

AUTOLITE 4123 Part Interchanges

Brand Part Number
Bosch W10A
Champion Spark Plug 312, 8814, 929C, L78YC, L82YC, L87YC, L92YC, RL82YC, RL87YC, RL95YC
DENSO Auto Parts 3068, IWF22, IWF24, W16FP-U, W16FPR-U, W20FP-U, W20FPR-L, W20FPR-U, W20FPR-U10, W22FPR-U
NGK 934, BP5HA, BP5HS, BP6HIX, BP6HS, BP6HS-10, BP6HVX, BP7HIX, BP7HS, BP7HS-10, BP7HVX, BPR4HS, BPR4HS-10, BPR5HS, BPR6HIX, BPR6HS, BPR6HS-10, BPR6HSA, BPR7HIX, BPR7HS, BPR7HS-10
ACDelco R42FS, 510-798, R43CFS, R43FS
General Motors 5613525
Balkamp 819-6874
StrongArm 4123, E4123
Monroe Shocks & Struts 900080
Volvo 308520590
Stabilus SG415013
Mighty Lift E95873
AMS 4123
Splitfire - Archived SF412C
ACCEL 453
Beru 14 R-7 BU
Torch E6RTC, E6RTP, E7RTC, E7TC

AUTOLITE 4123 Fits Vehicles

  • Harley-Davidson XLX 1000 (1983-1985)
  • Harley-Davidson XLCH (1979)
  • Harley-Davidson XLS Roadster (1979-1985)
  • Harley-Davidson XLH1000 (1979-1985)
  • Honda NH125 Aero (1984)
  • Yamaha LC50 Champ (1980)
  • Suzuki T125R (1971)
  • Suzuki A100 (1976-1977)
  • Hyosung SF50B/Prima (2008-2009)
  • Hyosung SF50R/Rally (2008-2009)
  • Hyosung SD50/Sense (2008-2009)
  • E-TON Beamer Matrix (2005)
  • E-TON Beamer II (2005)
  • E-TON Beamer Matrix II (2007-2008)
  • E-TON Sport 50 (2009-2010)
  • E-TON Matrix 50 (2009-2010)
  • E-TON Beamer III (2007-2009)
  • E-TON Beamer 50 (2010)
  • E-TON Beamer (2000-2004)
  • Suzuki TC120 (1971)
  • Suzuki MT50 (1973)
  • TGB 90 Adventure Series (2005)
  • TGB 50 Adventure Series (2005)
  • Hyosung TE90 (2006-2007)
  • Hyosung TE50 (2006-2007)
  • E-TON AXL 90 (2001)
  • E-TON AXL 50 (2001)
  • Can-Am DS 90 (2011)
  • Can-Am DS 90 X (2008-2011)
  • E-TON Rover (2007)
  • E-TON Rover GT (2007)
  • E-TON Viper 50M (Mini) (2005)
  • E-TON Viper 70 (2005)
  • E-TON Viper 90R (Reverse) (2005)
  • Polaris Predator 50 (2004-2007)
  • Bombardier Quest 90 (2004)
  • Bombardier Quest 50 (2004)
  • Arctic Cat 50 2x4 (2004-2006)
  • Polaris Predator 90 (2003-2006)
  • Kawasaki KFX50 (2003-2006)
  • Kawasaki KFX80 (2003-2006)
  • Kawasaki KDX50 (2003-2006)
  • Yamaha YJ50RA Vino Classic (2002-2005)
  • Suzuki LT-A50 QuadMaster (2002-2004)
  • E-TON Viper 50 (2002-2004)
  • E-TON Viper Jr. (2002-2004)
  • E-TON Viper 90 (2002-2006)
  • Bombardier DS90 (2002-2006)
  • Bombardier DS50 (2002-2006)
  • Yamaha YJ50 Vino (2001-2004)
  • Polaris Sportsman 90 (2001-2006)
  • Polaris Scrambler 50 (2001-2003)
  • Polaris Scrambler 90 (2001-2002)
  • E-TON Sierra 90 (2000-2001)
  • E-TON Rascal 40 (2000-2001)
  • E-TON Thunder 90 (2000-2001)
  • E-TON Lightning 50 (2000-2001)
  • Yamaha WRA700 WaveRunner III 700 (1997)
  • Yamaha WVT760 WaveVenture 760 (1997)
  • Yamaha WVT1100 WaveVenture 1100 (1996-1997)
  • Yamaha WB760 WaveBlaster 760 (1996-1997)
  • Yamaha RA760 WaveRaider 760 (1996)
  • Yamaha WRA700 WaveRunner III GP (1995)
  • Yamaha WVT700 WaveVenture 700 (1995-1996, 1998)
  • Yamaha RA700A WaveRaider Deluxe (1995)
  • Yamaha WRA700 WaveRunner 3 (1994)
  • Yamaha RA700 WaveRaider (1994-1997)
  • Honda SA50P Elite S (1994-2001)
  • Yamaha WB700 WaveBlaster (1993)
  • Yamaha CY50 Jog (1992-2001)
  • Yamaha WRA650 WaveRunner III (1990-1993, 1995-1996)
  • Yamaha CW50 Zuma (1989-1990)
  • Yamaha CG50 Jog (1988-1990)
  • Honda SA50 Elite SR (1988-1990, 1992-2001)
  • Honda SB50 Elite (1988-1990)
  • Yamaha WJ500 WaveJammer (1987-1990)
  • Yamaha SH50 Razz (1987-2001)
  • Suzuki LT80 QuadSport (1987-2006)
  • Honda SE50P Elite (1987)
  • Honda SE50 Elite S (1987)
  • Yamaha YF60S 4-Zinger (1986)
  • Yamaha CE50 Jog (1986-1987)
  • Yamaha BW80 (1986-1988, 1990)
  • Honda TG50M Gyro S (1985-1986)
  • Yamaha YT60 Zinger (1984-1985)
  • Suzuki LT50 QuadRunner (1984-1987)
  • Honda NN50 Gyro (1984)
  • Honda NQ50 Spree (1984-1987)
  • Yamaha CA50 Riva (1983-1986)
  • Yamaha CV80 Riva 80 (1983-1984)
  • Yamaha PW80 (1983-2006)
  • Suzuki ALT50 (1983-1984)
  • Honda NH80 Aero (1983-1985)
  • Honda NB50 Aero (1983-1987)
  • Harley Davidson XLX 1000 (1983-1985)
  • Honda NU50 (1982-1983)
  • Honda NU50M (1982-1983)
  • Yamaha PW50 (1981-2009, 2012-2015)
  • Honda NX50M (1981-1982)
  • Suzuki FS50 (1980-1981)
  • Suzuki FA50 (1980-1991)
  • Suzuki OR50 (1979-1980)
  • Honda NA50 (1979-1981)
  • Harley Davidson XLH1000 (1979-1985)
  • Harley Davidson XLS Roadster (1979-1985)
  • Harley Davidson XLCH (1979)
  • Suzuki JR50 (1978-2006)
  • Suzuki RM50 (1978-1980)
  • Honda NC50 (1977-1983)
  • Yamaha TY80 (1974-1975)
  • Suzuki F50 (1971)

AUTOLITE 4123 Cross References

AUTOLITE 4123 Manufacturer Information

Autolite® allows you to go anywhere—without delay—with its comprehensive spark plugs offerings. Although it was initially established as a buggy lamp manufacturer in 1911, it slowly gained recognition as an ignition expert when it developed and introduced the very first Autolite spark plug in 1935. Over the years, the company has reached greater heights, producing and supplying spark plugs and other ignition parts to some of the major automotive manufacturers, such as Chrysler, Studebaker, Willys, and Packard. Headquartered in Lake Forest, Illinois, Autolite is a proud member of the FRAM Group, North America's largest and most diversified group servicing the vehicle replacement parts market.

California Proposition 65 Warning California residents see

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