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1978 GMC K25
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Diagram

Spark Plug

113 Champion
Copper Plus


Vehicle specific

Note

Plug Type RV12C Gap .035 OE Type

Quantity per vehicle

6

Fits on

  • Only submodels with ...
    • L6   4.8L   -CC   292CID   4.13 Inches   104.8 mm   0  
Item on special order.
Please call us
1 800-361-4260
or make a request.
Item added to cart

18 Champion
Copper Plus


Vehicle specific

Note

OE Type Gap .044 Plug Type RV15YC4 Gap .035

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$4.58
In stock
Item added to cart

3018 Champion
Platinum Power


Vehicle specific

Note

Plug Type RV17PMC4 Gap .044 Gap .035

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$7.04
In stock
Item added to cart

7018 Champion
Double Platinum Power


Vehicle specific

Note

Plug Type RV17PMP4 Gap .035

Quantity per vehicle

6

Fits on

  • Only submodels with ...
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$12.05
Additional lead times may
apply for this item
Item added to cart
4509 | Spark Plug | Denso

4509 Denso
Platinum TT


Vehicle specific

Note

Gap 0.040 Platinum TT - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.8L   -CC   292CID   4.13 Inches   104.8 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$6.44
Additional lead times may
apply for this item
Item added to cart
4715 | Spark Plug | Denso

4715 Denso
Iridium TT


Vehicle specific

Note

Gap 0.040 Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.8L   -CC   292CID   4.13 Inches   104.8 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$13.29
Additional lead times may
apply for this item
Item added to cart
5020 | Spark Plug | Denso

5020 Denso
U-Groove Conventional


Vehicle specific

Note

Gap 0.035 O.E. Recommended Resistor Plug with Patented U-Groove Design

Quantity per vehicle

6

Fits on

  • Only submodels with ...
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$3.63
Additional lead times may
apply for this item
Item added to cart
5026 | Spark Plug | Denso

5026 Denso
U-Groove Conventional


Vehicle specific

Note

Gap 0.044 O.E. Recommended Resistor Plug with Patented U-Groove Design

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
$3.63
Additional lead times may
apply for this item
Item added to cart
5029 | Spark Plug | Denso

5029 Denso
U-Groove Conventional


Vehicle specific

Note

Gap 0.035 O.E. Recommended Resistor Plug with Patented U-Groove Design

Quantity per vehicle

6

Fits on

  • Only submodels with ...
    • L6   4.8L   -CC   292CID   4.13 Inches   104.8 mm   0  
$3.63
Additional lead times may
apply for this item
Item added to cart
5330 | Spark Plug | Denso

5330 Denso
Iridium Power


Vehicle specific

Note

Gap 0.044 Iridium Power - Performance Upgrade with World's Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Ir Alloy (90% Ir)

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.8L   -CC   292CID   4.13 Inches   104.8 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$11.84
Additional lead times may
apply for this item
Item added to cart

2869 NGK
G-Power Spark Plug


Vehicle specific

Note

Part # UR4GP

Qualifier

Light Duty | Gap 0.045in

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0   GAS  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$5.77
In stock
Item added to cart

2953 NGK
G-Power Spark Plug


Vehicle specific

Note

Part # YR5GP

Qualifier

Heavy Duty | Gap 0.045in

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0   GAS  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.8L   -CC   292CID   4.13 Inches   104.8 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$5.77
Additional lead times may
apply for this item
Item added to cart

6630 NGK
V-Power Spark Plug


Vehicle specific

Note

Part # UR4 OE Equivalent Design

Qualifier

Light Duty | Gap 0.045in

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0   GAS  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$3.81
In stock
Item added to cart

7052 NGK
V-Power Spark Plug


Vehicle specific

Note

Part # YR5 OE Equivalent Design

Qualifier

Heavy Duty | Gap 0.045in

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0   GAS  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.8L   -CC   292CID   4.13 Inches   104.8 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$3.81
In stock
Item added to cart

7240 NGK
V-Power Spark Plug


Vehicle specific

Note

Part # YR55 OE Equivalent Design

Qualifier

with California Emissions System | Gap 0.060in

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0   GAS  
$3.81
Additional lead times may
apply for this item
Item added to cart

7401 NGK
Iridium IX Spark Plug


Vehicle specific

Note

Part # UR4IX

Qualifier

Light Duty | Gap 0.045in

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0   GAS  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$12.40
Additional lead times may
apply for this item
Item added to cart

7516 NGK
Iridium IX Spark Plug


Vehicle specific

Note

Part # YR5IX

Qualifier

Heavy Duty | Gap 0.045in

Quantity per vehicle

8

Fits on

  • Only submodels with ...
    • V8   7.4L   -CC   454CID   4.00 Inches   101.6 mm   0  
    • V8   6.6L   -CC   400CID   3.76 Inches   95.5 mm   0  
    • V8   5.7L   -CC   350CID   3.48 Inches   88.5 mm   0   GAS  
    • V8   5.0L   -CC   305CID   3.48 Inches   88.4 mm   0  
    • L6   4.8L   -CC   292CID   4.13 Inches   104.8 mm   0  
    • L6   4.1L   -CC   250CID   3.91 Inches   99.3 mm   0  
$12.40
Additional lead times may
apply for this item
Item added to cart

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