Nissan D21 Spark Plug Replacement

For Sustained High Speed Driving with Marking # BKR5EY Original Center Electrode Material is Copper/Nickel Gap 0.032 in

Original Center Electrode Material is Copper/Nickel Gap 0.044 in

2 Plugs Per Cylinder Required Gap 0.032in OE Type ; Plug Type RN12YC

Gap 0.044in OE Type ; Plug Type RC12YC5

Gap 0.032in OE Type ; Plug Type RC9MCC

2 Plugs Per Cylinder Required Gap 0.032in OE Type ; Plug Type RN9YC

Original Center Electrode Material is Copper/Nickel Gap 0.032 in

Gap 0.044in OE Type ; Plug Type RC12MC4

Gap 0.032 Qty 2 Per Cyl. O.E. Recommended Resistor Plug with Patented U-Groove Design

Dual Plug; Intake Side; 4 Req'd (4 Exhaust Side Plugs Also Req'd) Gap 0.032"

Gap 0.044"

Gap 0.032" Actual OE Manufacturer 30,000 mi OE Mfr Recommended Service Interval

Dual Plug; Exhaust Side; 4 Req'd (4 Intake Side Plugs Also Req'd) Gap 0.032"

For Sustained High Speed Driving with Marking # BKR7EY Original Center Electrode Material is Copper/Nickel Gap 0.032 in

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

Dual Plug; Intake Side; 4 Req'd (4 Exhaust Side Plugs Also Req'd) Gap 0.032" Actual OE Manufacturer 30,000 mi OE Mfr Recommended Service Interval

Gap 0.032"

Dual Plug; Exhaust Side; 4 Req'd (4 Intake Side Plugs Also Req'd) Gap 0.032" Actual OE Manufacturer 30,000 mi OE Mfr Recommended Service Interval

Gap 0.044" Actual OE Manufacturer 30,000 mi OE Mfr Recommended Service Interval

Gap .044 (in); Auto

Dual Plug; Intake Side; 4 Req'd (4 Exhaust Side Plugs Also Req'd) Gap 0.032"

w/ Normal Heat Range

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

Gap 0.044in; Plug Type RC12PYC

Gap 0.044" Actual OE Manufacturer 30,000 mi OE Mfr Recommended Service Interval

For City Driving 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

Exhaust Side of Head

Gap 0.044in; Plug Type RC12PMC4

Gap 0.032in; Plug Type RC9PYC

Intake Side of Head

Plug Type RN10PYP4 2 PLUGS/CYLINDER Gap .032

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

Intake Side of Head

Intake Side of Head

w/ Hot Heat Range (Low-Speed Driving)

Exhaust Side of Head

Exhaust Side of Head

Gap 0.032"

Exhaust Side of Head

w/ Normal Heat Range

Gap 0.044"

Dual Plug; Exhaust Side; 4 Req'd (4 Intake Side Plugs Also Req'd) Gap 0.032"

Gap 0.044"

Gap .044 (in)

w/ Normal Heat Range

For Sustained High Speed Driving with Marking # BKR5EY Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Gap: .032/0.8mm Enhanced Tapered Ground Electrode w/ Platinum Chip

Intake Side of Head

Intake Side of Head

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

Gap 0.040 Qty 2 Per Cyl. 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

w/ Normal Heat Range

2 Plugs Per Cylinder Required Gap 0.032in ; Plug Type RN9PYP

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

Gap 0.044in; Plug Type RC12PMPB4

Gap 0.032in; Plug Type RC10PLPB4

Gap 0.044in; Plug Type RC11PYPB4

Gap 0.032in; Plug Type RC10WMB3

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

Gap 0.044"

2 Plugs Per Cylinder Required Gap 0.032in ; Plug Type RN8WYPB3

Gap 0.044in; Plug Type RC12WYPB4

Gap 0.044in; Plug Type RC12WMPB4

Gap 0.044 Qty 2 Per Cyl. Double Platinum Plug - Extra Long Life Double Platinum Plug with Platinum Ground Strap

Gap 0.032 Double Platinum Plug - Extra Long Life Double Platinum Plug with Platinum Ground Strap

Gap 0.044 Double Platinum Plug - Extra Long Life Double Platinum Plug with Platinum Ground Strap

Gap 0.044"

Dual Plug; Intake Side; 4 Req'd (4 Exhaust Side Plugs Also Req'd) Gap 0.032"

Gap 0.044"

Dual Plug; Exhaust Side; 4 Req'd (4 Intake Side Plugs Also Req'd) Gap 0.032"

Gap 0.032"

Gap .044 (in)

Gap .032 (in)

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 0.044 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 0.040 Qty 2 Per Cyl. 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

w/ Normal Heat Range

Gap .044 (in)

Intake Side of Head

Exhaust Side of Head

Intake Side of Head

w/ Normal Heat Range

w/ Normal Heat Range

Exhaust Side of Head

Gap 0.032"

Gap 0.032 Iridium Long Life - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap

14mm Thread; 3/4 in Reach; Hot Heat Range; 4 Pack;0.044 in. Plug Gap