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  2. Auto Parts
  3. Ignition
  4. Secondary Ignition
  5. Spark Plug
  6. Denso 4221

Denso 4221 Spark Plug

Denso 4221 Spark Plug
Denso 4221 Spark Plug Image 1
Denso 4221 Spark Plug

Denso
Brand:Denso
Part Number: 4221
UPC: 042511042216
Weight: 0.07 lbs
Condition:New



On Sale:

$5.48

Availability:
7 in Stock
Warehouse: US-7
Quantity:

Product Information

Description:

Get the Denso 4221 Spark Plug for your vehicle. Buy now and secure your purchase online!

U-Groove design provides better ignitability for increased engine efficiency.

Specifications:

Center Electrode Core Material:
Copper
Center Electrode Tip Material:
Nickel
Gap Size:
0.8 mm
Ground Configuration:
Standard
Ground Electrode Core Material:
Nickel
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Standard
Hex Size:
16.0 mm
Manufacturer Heat Range:
20
Reach:
19.00 mm
Resistance:
5000 ohms
Seat Type:
Flat
Thread Diameter:
14.00 mm
DENSO Auto Parts #:
U20ESR-N
Country of Origin:
CN

Select a vehicle to narrow Denso 4221 Spark Plug fitment info!

Last Updated: 11/09/2023

Years Vehicle Per Vehicle Fit NotesFitment Notes

2002

 

2002

 
Arctic Cat 375 Auto 2x4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Arctic Cat 375 Auto 2x4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2002

 

2002

 
Arctic Cat 375 Auto 4x4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Arctic Cat 375 Auto 4x4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2003

 

2002

 

2001

 

2000

 

1999

 

2003

 

2002

 

2001

 

2000

 

1999

 
Arctic Cat 400 2x4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Arctic Cat 400 2x4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2003

 

2002

 

2001

 

2000

 

1999

 

2003

 

2002

 

2001

 

2000

 

1999

 
Arctic Cat 400 4x4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Arctic Cat 400 4x4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 
Arctic Cat 500 4x4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Arctic Cat 500 4x4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2007

 

2007

 
Arctic Cat 700 EFI 4x4 Auto LE

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Arctic Cat 700 EFI 4x4 Auto LE



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2008

 

2008

 
Arctic Cat 700 EFI 4x4 Auto M4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Arctic Cat 700 EFI 4x4 Auto M4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2006

 

2006

 
Arctic Cat 700 EFI 4x4 Auto SE

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Arctic Cat 700 EFI 4x4 Auto SE



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2007

 

2007

 
Suzuki LT-A450X KingQuad AXi 4x4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Suzuki LT-A450X KingQuad AXi 4x4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2007

 

2007

 
Suzuki LT-A500F Vinson 500 4x4 Auto

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Suzuki LT-A500F Vinson 500 4x4 Auto



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2009

 

2008

 

2009

 

2008

 
Suzuki LT-A750X KingQuad AXi 4x4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Suzuki LT-A750X KingQuad AXi 4x4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2007

 

2007

 
Suzuki LT-F500F Vinson 500 4x4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Suzuki LT-F500F Vinson 500 4x4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle

2003

 

2003

 
Suzuki LT-F500F Vinson 500 4x4

-L U/K
1
 
U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design
 

Suzuki LT-F500F Vinson 500 4x4



-L U/K U-Groove Conventional
Gap 0.032
Resistor Plug with Patented U-Groove Design

1 Per Vehicle