Mercury Marquis Spark Plug Replacement

; Gap 0.044 in

Original Center Electrode Material is Copper/Nickel Gap 0.044 in

Professional Conventional; Gap .035

Original Center Electrode Material is Copper/Nickel Gap 0.034 in

with 14mm Diameter Threads Gap 0.035in ; Plug Type RV12YC

Gap 0.044in OE Type ; Plug Type RV15YC4

Gap 0.044in OE Type ; Plug Type RS14YC

Gap 0.044in OE Type ; Plug Type RV17YC

Gap 0.044in OE Type ; Plug Type RS14LC

Gap 0.035in OE Type ; Plug Type RS12YC

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

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

Gap 0.032 O.E. Recommended Resistor Plug with Patented U-Groove Design

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

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

Gap 0.060 O.E. Recommended Resistor Plug with Patented U-Groove Design

Gap 0.034" OE Equivalent Design

Gap 0.044" OE Equivalent Design

Replaces Original Half Thread Design; Auto

Gap 0.044" OE Equivalent Design 30,000 mi OE Mfr Recommended Service Interval

Gap 0.044" OE Equivalent Design

Gap 0.054" OE Equivalent Design 30,000 mi OE Mfr Recommended Service Interval

Gap 0.050" OE Equivalent Design

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

Gap 0.044in; Plug Type RS10PYC

Gap 0.044in; Plug Type RS14ZPYC5

.044 Gap OE half thread design replaced by full thread design Use until inventory is depleted

Gap 0.035in; Plug Type RS10PYC4

Gap 0.044in; Plug Type RV17PMC4

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Obsolete; OE half thread design replaced by full thread design .044"/1.1mm

OE Style; Auto

Gap 0.044in; Plug Type RS14PYPB

with 14 mm Diameter Threads Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Gap 0.044"

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Gap 0.050"

Gap 0.044"

Gap 0.054"

Gap 0.044"

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

California; Gap: .060 Enhanced Tapered Ground Electrode w/ Platinum Chip

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Gap: .034/0.9mm Enhanced Tapered Ground Electrode w/ Platinum Chip

Gap: .044 Enhanced Tapered Ground Electrode w/ Platinum Chip

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

Type - Standard Service Plug; Gap: .044; Plug Material: Copper

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

Gap 0.044in; Plug Type RV17PMP4

Gap 0.044in; Plug Type RS14ZPYPB

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Gap .035 (in); Auto

Gap 0.035in; Plug Type RS12PYPB5

Gap 0.035in; Plug Type RS12WYPB4

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Gap 0.040 Double Platinum Plug - Extra Long Life Double Platinum Plug with Platinum Ground Strap

Gap 0.050"

Gap 0.044"

Gap 0.054"

Gap 0.034"

Gap 0.044"

Gap 0.044"

Gap 0.044in; Plug Type RS14WYPB5

Gap 0.044in; Plug Type RS14WLPB5

Replaces Original Half Thread Design

Replaces Original Half Thread Design

Gap 0.044 Iridium Power - Performance Upgrade with Worlds 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)

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 .035 (in)

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

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

Gap 0.044"

Gap 0.044"

14mm Thread; .460 in. Reach; Heat Range 6; Each;0.035 in. Plug Gap

Single; Plug Type 16IR5Y; [Available While Supplies Last];0.035 in. Plug Gap

Single; Plug Type 6IR4Y; [Available While Supplies Last];0.035 in. Plug Gap Available While Supplies Last

Standard; Shorty Plug For Headers; 4 Pack;0.035 in. Plug Gap

14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap

14mm Thread; .460 in. Reach; Heat Range 5; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.035 in. Plug Gap

14mm Thread; .460 in. Reach; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 2 Of PN[0576S-4]; 8 Pack;0.035 in. Plug Gap

Stock Heat Range; 0.032 in. Gap; 5/8 in. Hex Size; .460 in. Reach; Resistor; Tapered Seat Type; 1.25mm Thread Pitch; 14mm Thread Size; 8 Pack Of PN[0576];0.035 in. Plug Gap

14mm Thread; .460 in. Reach; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 2 Of PN[0574S-4]; 8 Pack;0.035 in. Plug Gap