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1975 GMC K25

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1975 GMC K25 Spark Plug Parts

Choose your Engine for your 1975 GMC K25

6 Cyl 4.1L 6 Cyl 4.8L 8 Cyl 5.7L 8 Cyl 6.6L

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1975 GMC K25 Spark Plug 8 Cyl 6.6L Autolite

Autolite 145 Copper Resistor Spark Plug
OE Style; .035 Gap
Copper Resistor Spark Plug
Product Attributes:
- Center Electrode Design: Standard / Regular
- Seat Type: Tapered
- Electrical Terminal Type: Stud
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Resistor Type: Yes
- Insulator Material: Ceramic
- Hex Size: 5/8"
- Reach:
  - 0.431
  - 11.0
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Tapered
- Insulator Type: Short
- Pre-Gap Size:
  - 0.040
  - 1.00
- Resistance: 4000
- Ground Electrode Core Material: Nickel
Autolite® Copper Spark Plugs are manufactured to deliver quick starts, improved fuel economy and smooth acceleration. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and Original Equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
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:

121, 44T, 5029, 711, ARF4

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1975 - GMC K25	V	-	8 Cyl 6.6L	400

25 In Stock

$7.86 USD

$9.43 USD


Brand	Autolite
Part #	A77145
Condition	New
Warehouse	B

UPC: 009100001450

1975 GMC K25 Spark Plug 6 Cyl 4.8L Autolite

Autolite 145 Copper Resistor Spark Plug
Heavy Duty OE Style ; Except High Energy Ignition .035 Gap
Copper Resistor Spark Plug
Product Attributes:
- Center Electrode Design: Standard / Regular
- Seat Type: Tapered
- Electrical Terminal Type: Stud
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Resistor Type: Yes
- Insulator Material: Ceramic
- Hex Size: 5/8"
- Reach:
  - 0.431
  - 11.0
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Tapered
- Insulator Type: Short
- Pre-Gap Size:
  - 0.040
  - 1.00
- Resistance: 4000
- Ground Electrode Core Material: Nickel
Autolite® Copper Spark Plugs are manufactured to deliver quick starts, improved fuel economy and smooth acceleration. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and Original Equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
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
1975 - GMC K25	L	-	6 Cyl 4.8L	292

25 In Stock

$7.86 USD

$9.43 USD


Brand	Autolite
Part #	A77145
Condition	New
Warehouse	B

UPC: 009100001450

1975 GMC K25 Spark Plug 8 Cyl 5.7L Autolite

Autolite 145 Copper Resistor Spark Plug
OE Style; Except High Energy Ignition .035 Gap
Copper Resistor Spark Plug
Product Attributes:
- Center Electrode Design: Standard / Regular
- Seat Type: Tapered
- Electrical Terminal Type: Stud
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Resistor Type: Yes
- Insulator Material: Ceramic
- Hex Size: 5/8"
- Reach:
  - 0.431
  - 11.0
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Tapered
- Insulator Type: Short
- Pre-Gap Size:
  - 0.040
  - 1.00
- Resistance: 4000
- Ground Electrode Core Material: Nickel
Autolite® Copper Spark Plugs are manufactured to deliver quick starts, improved fuel economy and smooth acceleration. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and Original Equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
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
1975 - GMC K25	V	-	8 Cyl 5.7L	350

25 In Stock

$7.86 USD

$9.43 USD


Brand	Autolite
Part #	A77145
Condition	New
Warehouse	B

UPC: 009100001450

1975 GMC K25 Spark Plug 6 Cyl 4.1L Champion

Champion Copper Plus- Boxed - RV15YC6
Gap 0.060in OE Type ; Plug Type RV15YC6
Champion Copper Plus 79 Spark Plug (Carton of 4)
Copper Plus
Product Attributes:
- Seat Type: Tapered
- Electrical Terminal Type: Non-removable Nut
- Classification: Champion Copper Plus
- Resistor Type: Yes
- Plug Type: Rv15yc6
- Hex Size:
  - 0.625
  - 15.880
- Reach: 0.441
- Center Electrode Tip Material: Nickel
- Manufacturer Heat Range: 15
- Pre-Gap Size:
  - 0.060
  - 1.52
- Ground Electrode Core Material: Nickel
- Insulator Height: 0.12
Dependable performance. This Champion® spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
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:

14RF32, 14RF32-6, 14RF32A, 14RF42, 14RF42-6, 14RF42A, 82300322, ARF32-6, ARF42-6, ARF52-6, ASF32C6, ASF42C6, ASF42C7, ASF52-6, ASF52C7, HR10BCY, HR10BCZ, HR10BY...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1975 - GMC K25	L	-	6 Cyl 4.1L	250

6 In Stock

$4.47 USD

$5.36 USD


Brand	Champion
Part #	C3379
Condition	New
Warehouse	B

UPC: 037551000241

1975 GMC K25 Spark Plug Denso

Susciter Fiche Iridium TT
Gap 0.040 Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology
Susciter Fiche Iridium TT
Iridium TT
Product Attributes:
- Hex Size: 16.0
- Reach: 11.60
- Center Electrode Tip Material: Iridium
- Seat Type: Tapered
- Ground Electrode Tip Design: Platinum Twin-tip
- Center Electrode Core Material: Copper
- Ground Configuration: Twin-tip
- Pre-Gap Size: 1.0
- Resistance: 5000
- Ground Electrode Core Material: Nickel
Durability of an OE style plug combined with Power & Torque of high performance.
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.

This Part Fits the Following OEM/Substitute Numbers:

19208523, 19300383, 19300873, 19301654, 19302742, 19310656, 4289 155, 5613302, 5613794, 5613842, 5613867, 5613877, 5613935, 5613956, 5613957, 5614229, 5614243, 88901021...VIEW MORE

Additional Fitment Information:

Vehicle
1975 - GMC K25

2 In Stock

$13.66 USD

$16.39 USD


Brand	Denso
Part #	D454715
Condition	New
Warehouse	B

UPC: 042511047150

1975 GMC K25 Spark Plug Denso

Susciter Fiche Iridium TT
Gap 0.040 Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology
Susciter Fiche Iridium TT
Iridium TT
Product Attributes:
- Hex Size: 16.0
- Reach: 11.60
- Center Electrode Tip Material: Iridium
- Seat Type: Tapered
- Ground Electrode Tip Design: Platinum Twin-tip
- Center Electrode Core Material: Copper
- Ground Configuration: Twin-tip
- Pre-Gap Size: 1.0
- Resistance: 5000
- Ground Electrode Core Material: Nickel
Durability of an OE style plug combined with Power & Torque of high performance.
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.

Additional Fitment Information:

Vehicle
1975 - GMC K25

2 In Stock

$13.66 USD

$16.39 USD


Brand	Denso
Part #	D454715
Condition	New
Warehouse	B

UPC: 042511047150

1975 GMC K25 Spark Plug 8 Cyl 6.6L Autolite

Autolite AP145 Platinum Spark Plug
.035 Gap
Platinum Spark Plug
Product Attributes:
- Center Electrode Design: Standard / Regular
- Seat Type: Tapered
- Electrical Terminal Type: Stud
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Platinum
- Resistor Type: Yes
- Insulator Material: Ceramic
- Hex Size: 5/8"
- Reach:
  - 0.433
  - 11.0
- Center Electrode Tip Material: Platinum
- Ground Electrode Tip Design: Tapered
- Insulator Type: Short
- Pre-Gap Size:
  - 0.040
  - 1.00
- Resistance: 4000
- Ground Electrode Core Material: Nickel
Autolite® Platinum Spark Plugs are manufactured to deliver greater durability compared to standard copper plugs. Autolite® Platinum Spark Plugs provide easier starts, quicker acceleration, and improved fuel economy. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
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:

10, 121, 4000, 4323, 5029, ARF4

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1975 - GMC K25	V	-	8 Cyl 6.6L	400

50 In Stock

$9.48 USD

$11.38 USD


Brand	Autolite
Part #	A77AP145
Condition	New
Warehouse	B

UPC: 009100256300

1975 GMC K25 Spark Plug 8 Cyl 5.7L Autolite

Autolite AP145 Platinum Spark Plug
Without high energy ignition .035 Gap
Platinum Spark Plug
Product Attributes:
- Center Electrode Design: Standard / Regular
- Seat Type: Tapered
- Electrical Terminal Type: Stud
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Platinum
- Resistor Type: Yes
- Insulator Material: Ceramic
- Hex Size: 5/8"
- Reach:
  - 0.433
  - 11.0
- Center Electrode Tip Material: Platinum
- Ground Electrode Tip Design: Tapered
- Insulator Type: Short
- Pre-Gap Size:
  - 0.040
  - 1.00
- Resistance: 4000
- Ground Electrode Core Material: Nickel
Autolite® Platinum Spark Plugs are manufactured to deliver greater durability compared to standard copper plugs. Autolite® Platinum Spark Plugs provide easier starts, quicker acceleration, and improved fuel economy. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
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
1975 - GMC K25	V	-	8 Cyl 5.7L	350

50 In Stock

$9.48 USD

$11.38 USD


Brand	Autolite
Part #	A77AP145
Condition	New
Warehouse	B

UPC: 009100256300

1975 GMC K25 Spark Plug 8 Cyl 5.7L E3 Spark Plug

Resistor; 5/8 in. Hex Size; 0.460 in. Thread Reach; 14mm Thread Diameter; Taper Seat; DiamondFIRE Tip w/Fixed Gap;Plug Gap Not Adjustable For Heavy Duty Applications
Premium Automotive Spark Plug; Resistor; 5/8 in. Hex Size; 0.460 in. Thread Reach; 14mm Thread Diameter; Taper Seat; DiamondFIRE Tip w/Fixed Gap;
Premium Automotive Spark Plug
Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals; Including Chromium; Which Is Know To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov
Features:
- Patented DiamondFIRE Ground Electrode
- Edge-To-Edge Ground Electrode Out Performs Other Plug Designs
- E3 Equipped Engines Can Minimize Venting Of Unburned Fuel
- Burn Fuel More Efficiently By Burning Fuel More Completely
- Provide A Like-New Performance For The Life Of The Plug
- The Most Environmentally-Friendly Plug Available
E3 Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented ground electrode configuration increases the amount of combustion pressure created during each power stroke of the engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3's DiamondFire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.

This Part Fits the Following OEM/Substitute Numbers:

10, 108, 121, 144, 145, 147, 2248, 23, 2318, 24, 2400, 2623, 274, 276, 2771, 2927, 2953, 3018...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1975 - GMC K25	V	-	8 Cyl 5.7L	350

3 In Stock

$29.55 USD

$35.46 USD


Brand	E3 Spark Plug
Part #	E47E3.40
Condition	New
Warehouse	B

1975 GMC K25 Spark Plug 6 Cyl 4.1L E3 Spark Plug

Resistor; 5/8 in. Hex Size; 0.460 in. Thread Reach; 14mm Thread Diameter; Taper Seat; DiamondFIRE Tip w/Fixed Gap;Plug Gap Not Adjustable For Heavy Duty Applications
Premium Automotive Spark Plug; Resistor; 5/8 in. Hex Size; 0.460 in. Thread Reach; 14mm Thread Diameter; Taper Seat; DiamondFIRE Tip w/Fixed Gap;
Premium Automotive Spark Plug
Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals; Including Chromium; Which Is Know To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov
Features:
- Patented DiamondFIRE Ground Electrode
- Edge-To-Edge Ground Electrode Out Performs Other Plug Designs
- E3 Equipped Engines Can Minimize Venting Of Unburned Fuel
- Burn Fuel More Efficiently By Burning Fuel More Completely
- Provide A Like-New Performance For The Life Of The Plug
- The Most Environmentally-Friendly Plug Available
E3 Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented ground electrode configuration increases the amount of combustion pressure created during each power stroke of the engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3's DiamondFire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.