DENSO's patented U-Groove
spark plug enables complete combustion by
allowing the spark to fill the gap created by
the “U” shape. The ball of fire created in the
U-Groove develops a larger and hotter flash
front that virtually eliminates excessive
fouling and erratic starts caused by poor fuel
mixtures.
|
|
Reach |
Type |
NDW20MPU
|
.339” (8.6 mm) |
Standard |
NDW22MPU
|
.339” (8.6 mm) |
Standard
|
NDW14U
|
3/8”
(9.5 mm) |
Standard |
NDW16SU
|
3/8”
(9.5 mm) |
Standard |
NDW20SU
|
3/8”
(9.5 mm) |
Standard |
NDW22SU
|
3/8”
(9.5 mm) |
Standard |
NDW24SU
|
3/8”
(9.5 mm) |
Standard |
NDW27SU
|
3/8”
(9.5 mm) |
Standard |
NDW31SU
|
3/8”
(9.5 mm) |
Standard |
NDW22ESU
|
¾”
(19
mm) |
Standard |
|
|
|
Reach |
Type |
NDW24ESU
|
¾”
(19
mm) |
Standard |
NDW27ESU
|
¾”
(19
mm) |
Standard |
NDW31ESU
|
¾”
(19
mm) |
Standard |
NDW14FU
|
½”
(12.7 mm) |
Standard |
NDW16FSU
|
½”
(12.7 mm) |
Standard |
NDW20FSU
|
½”
(12.7 mm) |
Standard |
NDW22FSU
|
½”
(12.7 mm) |
Standard
|
NDW24FSU
|
½”
(12.7 mm) |
Standard |
NDW27FSU
|
½”
(12.7 mm) |
Standard |
NDW31FS
|
½”
(12.7 mm) |
Standard |
|
Briggs Animal Plugs
|
|
Reach |
Thread |
Type |
NDQ16RU11
|
¾” |
14
mm |
Standard |
NDQ20RU11
|
¾” |
14
mm |
Standard |
NDQ22PRU11
|
¾” |
14
mm |
Standard |
|
Briggs World Forumula Plugs
|
|
Reach |
Thread |
Type |
NDU20ESRN
|
¾” |
10
mm |
Standard |
NDU22ESRN
|
¾” |
10
mm |
Standard |
NDU24ESRN
|
¾” |
10
mm |
Standard |
NDU27ESRN
|
¾” |
10
mm |
Standard |
|
