1979 Mercury Monarch Spark Plug
Browse our online catalogue to find original replacement Spark Plugs specifically designed to fit a 1979 Mercury Monarch.





1979 Mercury Monarch Spark Plug
$4.64
$4.26
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Available Immediately
Pick-Up: Available Immediately
Required Per Vehicle: 6
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
Gap 0.050in Part # WR5 OE Equivalent Design
Gap 0.050in Part # WR5 OE Equivalent Design





1979 Mercury Monarch Spark Plug
$4.64
$4.26
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Available Immediately
Pick-Up: Available Immediately
Required Per Vehicle: 6
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
Gap 0.050in Stock# 2438 OE Equivalent Design
Gap 0.050in Stock# 2438 OE Equivalent Design





1979 Mercury Monarch Spark Plug
$4.64
$4.26
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Available Immediately
Pick-Up: Available Immediately
Required Per Vehicle: 6
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
Part # WR5 Gap 0.050" OE Equivalent Design
Part # WR5 Gap 0.050" OE Equivalent Design





1979 Mercury Monarch Spark Plug
$4.64
$4.37
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Gap 0.050in Part # UR45 OE Equivalent Design
Gap 0.050in Part # UR45 OE Equivalent Design





1979 Mercury Monarch Spark Plug
$4.64
$4.37
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Gap 0.050in Stock# 6945 OE Equivalent Design
Gap 0.050in Stock# 6945 OE Equivalent Design





1979 Mercury Monarch Spark Plug
$4.64
$4.37
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Part # UR45 Gap 0.050" OE Equivalent Design
Part # UR45 Gap 0.050" OE Equivalent Design





1979 Mercury Monarch Spark Plug
$6.75
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Gap 0.050in Part # UR45GP
Gap 0.050in Part # UR45GP





1979 Mercury Monarch Spark Plug
$6.75
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Gap 0.050in Stock# 3207
Gap 0.050in Stock# 3207





1979 Mercury Monarch Spark Plug
$6.75
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Part # UR45GP Gap 0.050"
Part # UR45GP Gap 0.050"

1979 Mercury Monarch Spark Plug
$3.46
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 6
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
OE Style .050 Gap
OE Style .050 Gap





1979 Mercury Monarch Spark Plug
$13.82
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Gap 0.050in Part # UR45IX
Gap 0.050in Part # UR45IX





1979 Mercury Monarch Spark Plug
$13.82
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Gap 0.050in Stock# 7559
Gap 0.050in Stock# 7559





1979 Mercury Monarch Spark Plug
$13.82
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Part # UR45IX Gap 0.050"
Part # UR45IX Gap 0.050"





1979 Mercury Monarch Spark Plug
$15.98
$13.81
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 6
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
Gap 0.050in Part # WR5IX
Gap 0.050in Part # WR5IX





1979 Mercury Monarch Spark Plug
$15.98
$13.81
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 6
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
Gap 0.050in Stock# 7510
Gap 0.050in Stock# 7510





1979 Mercury Monarch Spark Plug
$15.98
$13.81
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 6
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
Part # WR5IX Gap 0.050"
Part # WR5IX Gap 0.050"

1979 Mercury Monarch Spark Plug
$3.46
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
OE Style Except California .050 Gap
OE Style Except California .050 Gap

1979 Mercury Monarch Spark Plug
$7.64
$7.34
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Gap 0.040 Platinum TT - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap
Gap 0.040 Platinum TT - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap

1979 Mercury Monarch Spark Plug
$4.51
$4.28
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Gap 0.060 O.E. Recommended Resistor Plug with Patented U-Groove Design
Gap 0.060 O.E. Recommended Resistor Plug with Patented U-Groove Design

1979 Mercury Monarch Spark Plug
$18.03
$14.61
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Gap 0.040 Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology
Gap 0.040 Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology

1979 Mercury Monarch Spark Plug
$5.63
10+ In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 6
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
.050 Gap
.050 Gap

1979 Mercury Monarch Spark Plug
$15.80
$13.20
In Stock
Condition: New
Ships: Today, Feb. 11th
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Pick-Up: Ready in 1 Hour (Order before 4:00 PM)
Required Per Vehicle: 8
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
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)
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)

1979 Mercury Monarch Spark Plug
$3.45
Limited Stock
Condition: New
Required Per Vehicle: 8
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
OE Style California Replaces 664 and 665 .060 Gap
OE Style California Replaces 664 and 665 .060 Gap

1979 Mercury Monarch Spark Plug
$5.63
Limited Stock
Condition: New
Required Per Vehicle: 8
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Except California .050 Gap
Except California .050 Gap

1979 Mercury Monarch Spark Plug
$10.20
Limited Stock
Condition: New
Required Per Vehicle: 8
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Except California Iridium Enhanced Center Electrode. Proprietary V-trimmed Platinum side wire. 0.6mm finewire design. .050 Gap
Except California Iridium Enhanced Center Electrode. Proprietary V-trimmed Platinum side wire. 0.6mm finewire design. .050 Gap

1979 Mercury Monarch Spark Plug
$4.51
$3.93
Out of Stock
Condition: New
Required Per Vehicle: 6
Made in Japan
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
Gap 0.035 O.E. Recommended Resistor Plug with Patented U-Groove Design
Gap 0.035 O.E. Recommended Resistor Plug with Patented U-Groove Design

1979 Mercury Monarch Spark Plug
$5.63
Out of Stock
Condition: New
Required Per Vehicle: 8
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
California Replaces AP664 .060 Gap
California Replaces AP664 .060 Gap

1979 Mercury Monarch Spark Plug
$8.47
Out of Stock
Condition: New
Required Per Vehicle: 8
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Except California .050 Gap
Except California .050 Gap

1979 Mercury Monarch Spark Plug
$10.20
Out of Stock
Condition: New
Required Per Vehicle: 8
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
California Iridium Enhanced Center Electrode. Proprietary V-trimmed Platinum side wire. 0.6mm finewire design. .060 Gap
California Iridium Enhanced Center Electrode. Proprietary V-trimmed Platinum side wire. 0.6mm finewire design. .060 Gap
1979 Mercury Monarch Spark Plug
$3.10
Out of Stock
Condition: New
Required Per Vehicle: 8
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
OE Style Except California .050 Gap
OE Style Except California .050 Gap
1979 Mercury Monarch Spark Plug
$3.10
Out of Stock
Condition: New
Required Per Vehicle: 6
Fits: 1979 Mercury Monarch
Equipped With:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
OE Style .050 Gap
OE Style .050 Gap