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1966 GMC 3000

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Choose your Engine for your 1966 GMC 3000

6 Cyl 4.1L 6 Cyl 4.8L 6 Cyl 5.0L 6 Cyl 5.7L 8 Cyl 4.6L

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1966 GMC 3000 Spark Plug 6 Cyl 4.1L Autolite

Autolite 65 Copper Spark Plug
OE Style; Auto
Copper Spark Plug
Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
  - 0.133
  - 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Regular
- Core Nose Length:
  - 0.61
  - 15.49
- Washer Type: Flat
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 13/16
- Reach:
  - 0.75
  - 19.05
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.035
  - 0.89
- Resistance: 4000
- Insulator Height:
  - 2.223
  - 56.46
Features:
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

05613870, 05613932, 116, 14 R-9 DU, 14-8 LUR, 19301656, 20-7000836, 2128, 3021, 32721, 38, 44NS, 44XL0, 44XLS, 45770-3, 4609081, 496, 513625800...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1966 - GMC 3000	L	4097	6 Cyl 4.1L	250

76 In Stock

Limited-Time Offer

$8.46 USD

$10.15 USD


Brand	Autolite
Part #	A7765
Condition	New
Warehouse	B

UPC: 009100000651

1966 GMC 3000 Spark Plug 6 Cyl 4.1L Autolite

Autolite 65 Copper Spark Plug
Gap .035 (in); Auto
Copper Spark Plug
Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
  - 0.133
  - 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Regular
- Core Nose Length:
  - 0.61
  - 15.49
- Washer Type: Flat
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 13/16
- Reach:
  - 0.75
  - 19.05
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.035
  - 0.89
- Resistance: 4000
- Insulator Height:
  - 2.223
  - 56.46
Features:
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1966 - GMC 3000	L	4097	6 Cyl 4.1L	250

76 In Stock

Limited-Time Offer

$8.46 USD

$10.15 USD


Brand	Autolite
Part #	A7765
Condition	New
Warehouse	B

UPC: 009100000651

1966 GMC 3000 Spark Plug 6 Cyl 5.0L Autolite

Autolite 65 Copper Spark Plug
3/4 (in) Reach Spark Plugs; Auto
Copper Spark Plug
Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
  - 0.133
  - 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Regular
- Core Nose Length:
  - 0.61
  - 15.49
- Washer Type: Flat
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 13/16
- Reach:
  - 0.75
  - 19.05
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.035
  - 0.89
- Resistance: 4000
- Insulator Height:
  - 2.223
  - 56.46
Features:
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1966 - GMC 3000	V	5012	6 Cyl 5.0L	305

76 In Stock

Limited-Time Offer

$8.46 USD

$10.15 USD


Brand	Autolite
Part #	A7765
Condition	New
Warehouse	B

UPC: 009100000651

1966 GMC 3000 Spark Plug 6 Cyl 5.0L Autolite

Autolite 85 Copper Spark Plug
Gap .035 (in); Auto
Copper Spark Plug
Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
  - 0.133
  - 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Regular
- Core Nose Length:
  - 0.775
  - 19.69
- Washer Type: Flat
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 13/16
- Reach:
  - 0.374
  - 9.5
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.034
  - 0.86
- Resistance: 4000
- Insulator Height:
  - 2.46
  - 62.48
Features:
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

0 250 202 045, 05613090, 10, 137, 14 R-9 EUO, 19310654, 198, 25171346, 3036, 3332, 4339425, 437, 43S, 449, 44S, 5613090, 5613591, 5613845...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1966 - GMC 3000	V	5012	6 Cyl 5.0L	305

38 In Stock

Limited-Time Offer

$8.46 USD

$10.15 USD


Brand	Autolite
Part #	A7785
Condition	New
Warehouse	B

UPC: 009100000859

1966 GMC 3000 Spark Plug 6 Cyl 5.0L Autolite

Autolite 85 Copper Spark Plug
OE Style; Auto
Copper Spark Plug
Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
  - 0.133
  - 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Regular
- Core Nose Length:
  - 0.775
  - 19.69
- Washer Type: Flat
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 13/16
- Reach:
  - 0.374
  - 9.5
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.034
  - 0.86
- Resistance: 4000
- Insulator Height:
  - 2.46
  - 62.48
Features:
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1966 - GMC 3000	V	5012	6 Cyl 5.0L	305

38 In Stock

Limited-Time Offer

$8.46 USD

$10.15 USD


Brand	Autolite
Part #	A7785
Condition	New
Warehouse	B

UPC: 009100000859

1966 GMC 3000 Spark Plug 6 Cyl 5.0L Autolite

Autolite 85 Copper Spark Plug
3/8 (in) Reach Spark Plugs; Auto
Copper Spark Plug
Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
  - 0.133
  - 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Regular
- Core Nose Length:
  - 0.775
  - 19.69
- Washer Type: Flat
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 13/16
- Reach:
  - 0.374
  - 9.5
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.034
  - 0.86
- Resistance: 4000
- Insulator Height:
  - 2.46
  - 62.48
Features:
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1966 - GMC 3000	V	5012	6 Cyl 5.0L	305

38 In Stock

Limited-Time Offer

$8.46 USD

$10.15 USD


Brand	Autolite
Part #	A7785
Condition	New
Warehouse	B

UPC: 009100000859

1966 GMC 3000 Spark Plug 6 Cyl 5.0L Autolite

Autolite AP85 Platinum Spark Plug
3/8 (in) Reach Spark Plugs
Platinum Spark Plug
Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
  - 0.133
  - 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Performance
- Core Nose Length:
  - 0.775
  - 19.69
- Washer Type: Crush
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 13/16
- Reach:
  - 0.374
  - 9.5
- Center Electrode Tip Material: Platinum
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.035
  - 0.89
- Resistance: 4000
- Insulator Height:
  - 2.46
  - 62.48
Features:
- Engineered with a platinum firing tip that prevents gap erosion for longer service life.
- Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- The multi-rib insulator prevents flash-over.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
Autolite® Platinum spark plugs are engineered with a platinum center electrode firing tip that provides improved performance and increased durability, making it a reliable choice for all older engine applications and designs. Its platinum design delivers quicker firing, smoother starts, for better acceleration, and improved fuel efficiency.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1966 - GMC 3000	V	5012	6 Cyl 5.0L	305

38 In Stock

Limited-Time Offer

$10.18 USD

$12.22 USD


Brand	Autolite
Part #	A77AP85
Condition	New
Warehouse	B

UPC: 009100908513

1966 GMC 3000 Spark Plug 6 Cyl 5.0L Autolite

Autolite AP85 Platinum Spark Plug
Gap .035 (in)
Platinum Spark Plug
Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
  - 0.133
  - 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Performance
- Core Nose Length:
  - 0.775
  - 19.69
- Washer Type: Crush
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 13/16
- Reach:
  - 0.374
  - 9.5
- Center Electrode Tip Material: Platinum
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.035
  - 0.89
- Resistance: 4000
- Insulator Height:
  - 2.46
  - 62.48
Features:
- Engineered with a platinum firing tip that prevents gap erosion for longer service life.
- Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- The multi-rib insulator prevents flash-over.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
Autolite® Platinum spark plugs are engineered with a platinum center electrode firing tip that provides improved performance and increased durability, making it a reliable choice for all older engine applications and designs. Its platinum design delivers quicker firing, smoother starts, for better acceleration, and improved fuel efficiency.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

14, 3037, 3332, 41-833, 5614238, 7, AR32, AR42, AS42C, SP449, STD360913, XR45VX, XR5VX

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1966 - GMC 3000	V	5012	6 Cyl 5.0L	305

38 In Stock

Limited-Time Offer

$10.18 USD

$12.22 USD


Brand	Autolite
Part #	A77AP85
Condition	New
Warehouse	B

UPC: 009100908513

1966 GMC 3000 Spark Plug 8 Cyl 4.6L Autolite

Autolite 295 Copper Spark Plug
OE Style; Auto
Copper Spark Plug
Product Attributes:
- Center Electrode Insulator Tip Projection:
  - 0.039
  - 0.99
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Grade Type: Regular
- Core Nose Length:
  - 0.633
  - 16.08
- Washer Type: Flat
- Ground Electrode Tip Material: Nickel
- Skirt: Yes
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: No
- Indexed: No
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.03
  - 0.76
- Ground Electrode Core Material: Nickel
- Center Electrode Projection: Short Projection
- Seat Type: Flat
- Ground Electrode Quantity: 1
- Insulator Material: Ceramic
- Hex Size: 13/16
- Reach:
  - 0.374
  - 9.5
- Center Electrode Tip Material: Nickel
- Skirt Length:
  - 0.623
  - 15.82
- Manufacturer Heat Range: 6
- Resistance: 1
- Insulator Height:
  - 2.327
  - 59.11
Features:
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

14-8 E, 14-9 EUO, 29693, 3210, 45, 45770-6, 46, 6008, 77-317, 8129840, 834230-MI, 841, 8411, 841S, 8U2J12405AXA, A7, A71, A7C...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1966 - GMC 3000	V	4638	8 Cyl 4.6L	283

20 In Stock

Limited-Time Offer

$8.22 USD

$9.86 USD


Brand	Autolite
Part #	A77295
Condition	New
Warehouse	B

UPC: 009100929518

1966 GMC 3000 Spark Plug 8 Cyl 4.6L Autolite

Autolite 295 Copper Spark Plug
Non-Resistor Plug; Auto
Copper Spark Plug
Product Attributes:
- Center Electrode Insulator Tip Projection:
  - 0.039
  - 0.99
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Grade Type: Regular
- Core Nose Length:
  - 0.633
  - 16.08
- Washer Type: Flat
- Ground Electrode Tip Material: Nickel
- Skirt: Yes
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: No
- Indexed: No
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - 0.03
  - 0.76
- Ground Electrode Core Material: Nickel
- Center Electrode Projection: Short Projection
- Seat Type: Flat
- Ground Electrode Quantity: 1
- Insulator Material: Ceramic
- Hex Size: 13/16
- Reach:
  - 0.374
  - 9.5
- Center Electrode Tip Material: Nickel
- Skirt Length:
  - 0.623
  - 15.82
- Manufacturer Heat Range: 6
- Resistance: 1
- Insulator Height:
  - 2.327
  - 59.11
Features:
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.
This item must be purchased in quantities of 4