Spark Plugs - autoliteACDelco DOUBLE PLATINUM SPARK PLUGS An ideal plug for vehicles requiring platinum performance or older vehicles calling for conventional plugs, ACDelco’s Double

Spark PlugsCatalogue: Issue 3.2

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ACDelco REGULAR SPARK PLUGS

With coverage for most older vehicles on the road today and robust long-life design, ACDelco Regular Spark Plugs are an economical choice for solid performance.

Features and Benefits

Copper-core centre electrode that helps provide improved heat transfer to the tip, giving you the reliability you’re looking for while improving its resistance to low-speed carbon fouling.Precisely engineered and manufactured to provide everyday reliability and efficient performance.The hot-tip insulator heats fast and fires hot.The nickel-chrome alloy on the ground electrode and centre electrode sheathing resists wear from spark erosion and the corrosive environment of the combustion chamber.

regular spark plugsAbout ACDelco

Buttress top insulator has a long flashover path

Super ceramic insulator exhibits near-diamond hardness for durability

Nickel alloy centre electrode with a copper core

Nickel alloy ground electrode

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About ACDelcoplatinum (rapidfire®) spark plugs

ACDelco PLATINUM (RAPIDFIRE®) SPARK PLUGS

Designed for today’s most popular vehicles, ACDelco’s (Rapidfire®) Platinum Spark Plug fits engines using conven-tional plugs, as well as newer vehicles requiring platinum performance.


Ribless insulator that improves the plug-to-boot seal.Tapered centre wire electrode with a platinum pad reduces the firing diameter and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage.One-piece integral suppressor seal helps reduce radio frequency interference, meters spark plug energy to help provide long electrode life and seals against compression leakage.When compared to regular spark plugs:- Reduced sparking voltage - Greater corrosion protection.Longer life and improved efficiency over regular plugs.

Ribless insulator improves plug-to-boot seal

Nickel-plated shell

Extended firing location for enhanced combustion

Tapered and columned centre wire electrode with a platinum pad

Clipped ground electrode

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ACDelco DOUBLE PLATINUM SPARK PLUGS

An ideal plug for vehicles requiring platinum performance or older vehicles calling for conventional plugs, ACDelco’s Double Platinum Spark Plugs can give up to 100,000 kms* of service in some applications.

* Maintenance needs vary with different uses and conditions. See vehicle Owner’s Manual for more information.


Dual platinum tip for improved resistance to spark erosion and corrosive combustion chamber environment. A platinum centre electrode and a platinum pad lower the ignition demand voltage.One-piece integral suppressor seal helps reduce radio frequency interference, meters spark plug energy to help provide long electrode life and seals against compression leakage.Designed with a corrosion resistant shell.Spark gap remains virtually unchanged during the life of the plug.

double platinum spark plugsAbout ACDelco

Ribless insulator improves plug-to-boot seal

Nickel-plated shell

Platinum tip centre wire electrode

Platinum tip ground electrode

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Spark Plug Specificationsregular spark plugs

ACDelco Regular Spark Plugs (Common characteristics - J type electrode, Resistor style except for 42XLS & 43XLS which are a Non Resistor style)

Refer toIllustrationon page 55

1 2 3 3 4 5 6 7 8 9 10 12 13 14

ACDelco Part #

Insulator Barrel

Diameter

Installed Height (mm)

Reach (mm)

Reach (")

Spark Location

(mm)

Gap (mm)

Max. Side Wire Projection

(mm)

Side Wire Thickness

(mm)

Side Wire Width (mm)

Thread Pitch

"Hex Size (Socket Size -

Inches)"

IMEP Heat Range Value

(The lower the heat range the hotter the plug)

Seat Type

Terminal Type

(Solid or Loose)

Insulator Profile

(Ribbed or Smooth)

41602 10.24 50.50 19.05 3/4" 3.38 0.89 6.35 1.52 2.79 M14x1.25 5/8" 320 Flat Solid Smooth

41629 10.24 50.98 19.05 3/4" 3.38 0.89 6.35 1.52 2.79 M14x1.25 5/8" 240 Flat Solid Smooth

42XLS 12.29 56.49 19.05 3/4" 3.38 0.89 6.50 1.52 2.79 M14x1.25 13/16" 320 Flat Solid Ribbed

43XLS 12.20 56.90 19.05 3/4" 3.42 0.70 5.72 1.60 2.60 M14x1.25 13/16" N/A Flat Loose Ribbed

CR42XLSX 12.20 56.90 19.05 3/4" 3.00 1.10 5.70 1.62 2.70 M14x1.25 13/16" N/A Flat Loose Ribbed

FR1LS 10.50 50.50 19.05 3/4" 3.38 0.89 6.35 1.52 2.79 M14x1.25 5/8" 375 Flat Solid Ribbed

FR2LS 10.50 50.50 19.05 3/4" 2.98 1.00 5.58 1.60 2.70 M14x1.25 5/8" 320 Flat Solid Ribbed

FR3LS 10.50 50.50 19.05 3/4" 3.00 1.00 5.30 1.30 2.50 M14x1.25 5/8" N/A Flat Loose Ribbed

R42LTS 10.50 51.46 17.25 11/16" 3.38 1.12 6.80 1.52 2.79 M14x1.25 5/8" 280 Conical Solid Ribbed

R42LTS6 10.50 51.46 17.25 11/16" 3.38 1.52 6.60 1.27 2.79 M14x1.25 5/8" 240 Conical Solid Ribbed

R42XLS 12.29 56.49 19.05 3/4" 3.38 0.89 6.50 1.52 2.79 M14x1.25 13/16" 320 Flat Solid Ribbed

R43S 12.20 62.56 9.40 3/8" 3.38 0.89 6.10 1.27 2.54 M14x1.25 13/16" 240 Flat Solid Ribbed

R43T 10.52 57.79 10.92 7/16" 1.12 1.02 3.90 1.27 2.79 M14x1.25 5/8" 250 Conical Solid Ribbed


R44LTS6 10.50 51.46 17.25 11/16" 3.38 1.52 7.00 1.27 2.79 M14x1.25 5/8" 240 Conical Solid Ribbed

R44TS 10.90 60.25 11.00 7/16" 3.38 1.12 6.50 1.27 2.79 M14x1.25 5/8" 245 Conical Solid Ribbed


ACDelco Regular Spark Plugs (Common characteristics - J type electrode, Resistor style)


1 2 3 3 4 5 6 7 8 9 10 12 13 14

ACDelco Part #

(Euro style numbers)

Insulator Barrel

Diameter


Reach (mm)

Reach (")

Spark Location

(mm)

Gap (mm)


(mm)

Side Wire Thickness

(mm)

Side Wire width (mm)

Thread Pitch


Inches)"

Heat Range (0 = cold, 9 = hot)

Seat Type

Terminal Type

(Solid or Loose)

Insulator Profile

(Ribbed or Smooth)

R4600 10.50 53.00 17.50 11/16" 3.00 1.10 5.73 1.60 2.70 M14x1.25 5/8" 4 Conical Loose Ribbed

R5602* 10.50 50.20 19.05 3/4" 5.70 0.80 5.80 1.80 3.00 M14x1.25 5/8" 5 Flat Solid Smooth

R5610 10.50 50.50 19.05 3/4" 4.90 1.10 7.60 1.60 2.70 M14x1.25 5/8" 5 Flat Solid Ribbed

R6602 10.50 53.00 17.50 11/16" 3.00 0.90 5.50 1.60 2.70 M14x1.25 5/8" 6 Conical Loose Ribbed

R6606 12.20 56.90 19.05 3/4" 3.08 1.10 5.98 1.80 2.80 M14x1.25 5/8" 6 Flat Loose Ribbed

R8602 10.50 50.50 19.05 3/4" 4.80 1.10 7.50 1.60 2.70 M14x1.25 5/8" 8 Flat Solid Ribbed

R9601 12.20 56.90 19.05 3/4" 4.48 1.10 7.18 1.60 2.70 M14x1.25 13/16" 9 Flat Loose Ribbed

* Two electrodes

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Spark Plug Specifications

ACDelco Platinum Spark Plugs (Common characteristics - Resistor style, Solid Terminal type, Smooth Insulator Profile, J type electrode)


1 2 3 3 4 5 6 7 8 9 10 11 12

ACDelco Part #

Insulator Barrel

Diameter (mm)


Reach (mm)

Reach (")

Spark Location

(mm)

Gap (mm)


(mm)

Side Wire Thickness

(mm)


Thread Pitch

Hex size (Socket Size -

Inches)



Electrode Enhancements

Seat Type

AC2 10.90 62.69 10.92 7/16" 3.38 1.12 6.52 1.27 2.79 M14x1.25 5/8" 220

Single platinum pad on the center

electrode with corners of ground electrode

trimmed off

Conical

AC3 10.49 51.38 17.25 11/16" 3.37 1.12 6.52 1.52 2.79 M14x1.25 5/8" 240



trimmed off

Conical

AC4 11.76 56.49 19.05 3/4" 3.38 1.02 6.47 1.52 2.79 M14x1.25 13/16" 320



trimmed off

Flat

AC5 10.24 50.98 19.05 3/4" 3.38 1.12 6.52 1.52 2.79 M14x1.25 5/8" 280



trimmed off

Flat

AC6 10.49 51.38 17.25 11/16" 4.82 1.12 7.97 1.27 2.79 M14x1.25 5/8" 240



trimmed off

Conical

AC8 10.49 52.71 17.25 11/16" 3.37 0.89 6.29 1.52 2.79 M14x1.25 5/8" 280



trimmed off

Conical

AC14 10.49 51.38 17.25 11/16" 3.37 1.52 6.93 1.27 2.79 M14x1.25 5/8" 240



trimmed off

Conical

platinum (rapidfire®) spark plugs

54

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Spark Plug Specificationsdouble platinum spark plugs

ACDelco Double Platinum Spark Plugs (Common characteristics - Resistor style, Solid Terminal type, Smooth Insulator Profile, J type electrode)


1 2 3 3 4 5 6 7 8 9 10 11 12

ACDelco Part #

Insulator Barrel

Diameter (mm)


Reach (mm)

Reach (")

Spark Location

(mm)

Gap (mm)


(mm)

Side Wire Thickness

(mm)


Thread Pitch

Hex size (Socket Size -

Inches)




Seat Type

41800 10.24 50.98 19.05 3/4" 3.38 1.12 6.60 1.52 2.79 M14x1.25 5/8" 275Platinum pad on the center electrode with a platinum

pad on the ground electrode Flat








pad on the ground electrode Conical





41814 10.90 49.66 24.94 1" 3.38 1.3 6.70 1.52 2.79 M14x1.25 5/8" 350Platinum pad on the center electrode with a platinum








41834 10.50 55.68 25.00 1" 3.38 1.27 6.17 1.52 2.79 M14x1.25 5/8" 320Finewire platinum center electrode with a platinum

pad on the ground electrodeConical

41835 10.24 50.95 25.00 1" 3.38 1.12 6.02 1.52 2.79 M14x1.25 5/8" 320Finewire platinum center electrode with a platinum

pad on the ground electrodeFlat



41963 10.49 52.79 17.25 11/16" 3.37 1.27 6.75 1.27 2.79 M14x1.25 5/8" 280Finewire platinum center electrode with a platinum


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Spark Plug Specificationsillustration

14

10

6 412

9

25

11

8

See Detail “B”

Detail “B”1

13

3

7

1 2 3 3 4 5 6 7 8 9 10 11 12 13 14

ACDelco Part #

Insulator Barrel

Diameter


Reach (mm)

Reach (")

Spark Location

(mm)

Gap (mm)


(mm)

Side Wire Thickness

(mm)


Thread Pitch


Inches)"


Seat Type

Terminal Type

(Solid or Loose)

Insulator Profile

(Ribbed or Smooth)

Spark Plug Specificationsmetric / imperial gap conversion table

mm

inches

0.4

.016

0.5

.020

0.6

.024

0.7

.028

0.8

.032

0.9

.036

1.0

.040

1.1

.044

1.2

.048

1.3

.052

1.4

.056

1.5

.060

1.6

.064

2.0

.080

Available from:

ACD020913

1800 ACDelco acdelco.com.au

Documents

Spark Plugs - autoliteACDelco DOUBLE PLATINUM SPARK PLUGS An ideal plug for vehicles requiring platinum performance or older vehicles calling for conventional plugs, ACDelco’s Double