Ford E-350 Super Duty Spark Plug Replacement

Gap 0.054in; Plug Type RS9YC

Gap 0.060 Resistor Plug with Patented U-Groove Design

Gap 0.044"

Gap 0.054"

Gap 0.054in; Plug Type RS10PYC

Gap 0.044in; Plug Type RS10PYC4

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

2 Plugs Per Cylinder Required Gap 0.044in ; Plug Type RES8PYB5

Gap 0.044"

Gap 0.054"

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

Gap: .044/1.1mm 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

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

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

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

Gap 0.054in; Plug Type RS9PYP4

2 Plugs Per Cylinder Required Gap 0.044in ; Plug Type RES9PYP4

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

Dual Plug; 16 Req'd Gap 0.044"

Gap 0.054in; Plug Type RS8WYPB5

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

Original Center Electrode Material is Platinum Do Not Gap, Gap is Preset

Gap 0.050 O.E. Recommended Double Platinum Plug - Extra Long Life Double Platinum Plug with Platinum Ground Strap

2 Plugs Per Cylinder Required Gap 0.044in ; Plug Type RE10WYPB5

Dual Plug; 16 Req'd Gap 0.044"

Gap 0.054"

Gap 0.044"

Gap 0.044 Iridium Long Life - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap

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)

Dual Plug; 16 Req'd Gap 0.044"

Dual Plug; 16 Req'd Gap 0.044" OE Equivalent Design 60,000 mi OE Mfr Recommended Service Interval-Severe Service, 97,500 mi OE Mfr Recommended Service Interval-Normal Service

Gap 0.054" OE Equivalent Design 60,000 mi OE Mfr Recommended Service Interval-Severe Service, 100,000 mi OE Mfr Recommended Service Interval-Normal Service

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

Gap 0.044 Qty 2 Per Cyl. 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 0.052" OE Equivalent Design* 60,000 mi (Severe) / 90,000 mi (Normal) OE Mfr Recommended Service Interval

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

Gap 0.040 Qty 2 Per Cyl. Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology

Gap 0.044" OE Equivalent Design 60,000 mi OE Mfr Recommended Service Interval-Severe Service, 100,000 mi OE Mfr Recommended Service Interval-Normal Service

Gap 0.054"

Gap 0.052"

Dual Plug; 16 Req'd Gap 0.044"

Gap 0.054"

14mm Thread; .708 in. Reach; Heat Range 6; 4 Pack;0.054 in. Plug Gap

14mm Thread; .708 in. Reach; Heat Range 6; 8 Pack;0.054 in. Plug Gap