| BOSCH Spark Plug Application Table |
| Make |
Model |
Year |
Notes |
Colder Heat Range |
Original Equipment
Heat Range |
Hotter Heat Range |
# of ground electrodes |
Factory Set Gap (mm) |
BMW # (last 3 digits) |
| BMW Motorcycle |
|
1 = Cold ..….. 9 = Hot |
|
|
|
| R Early |
R25, R26, R27, R50, R60, R69 etc, early |
|
0.75 inch reach |
W3CC |
W4CC |
W5CC |
1 |
0.24 |
Discontinued |
| |
0.50 inch reach |
W3AC |
W4AC |
W5AC |
1 |
0.28 |
Discontinued |
| |
|
|
|
|
|
|
|
|
|
| R Model 247 AIRHEAD |
1000 cc (not R100/7T, 1977-78) |
1977-1984 |
|
NA |
W5RDC+ |
W6RDC+ |
1 |
0.28 |
… 146 |
| |
|
|
|
|
|
|
|
|
| 750 cc, R100T/7 1977-78, R90/6 |
|
|
WR5DC+ |
WR6DC+ |
WR7DC+ |
1 |
0.28 |
… 145 |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| R65, R80, R100 |
1977-1995 |
|
WR6DC+ |
W7RDC+ |
WR8DC+ |
1 |
0.32 |
… 485 |
| All monolevers & paralevers (not oilhead R850, R1100,etc..) |
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| R Model 259 OILHEAD |
R850, R1100, R1150, R1200, etc |
All; 1993-2005 |
resistor |
|
FR6DDC |
|
2 |
0.80 |
… 771 |
|
FR5DTC |
FR6DTC |
FR7DTC |
3 |
0.80 |
|
| non-resistor |
|
F6DTC |
|
3 |
0.80 |
|
|
|
use FR6DC+
|
FR7LDC |
2 |
|
|
| |
w/ V-groove |
+ Yttrium |
|
|
|
|
| |
|
|
|
|
|
|
|
| K |
K75 & K100 |
thru 1990 |
|
NA |
X5DC |
NA |
1 |
0.24 |
… 800 |
| |
|
|
|
|
|
|
|
|
| |
|
silver resistor |
NA |
XR4CS |
NA |
1 |
0.70 |
|
| K1100, K1200 |
All |
resistor |
NA |
XR5DC |
NA |
1 |
0.60 |
… 293 |
| |
resistor dual ground electrode |
XR7LDC |
NA |
2 |
0.60 |
|
| |
|
|
|
|
|
|
|
| F |
650 |
1993 - on |
silver |
|
XR2CS |
XR4CS |
1 |
0.70 |
|
| |
|
OE NGK |
|
|
XR3CS |
1 |
0.70 |
|
| |
|
D8EA, DR8EB |
|
X5CC |
|
|
|
|
|
R = denotes resistor |
Single ground |
Dual ground |
Triple ground |
|
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| |
|
|
|
|
|
|
| |
Bosch Spark Plug Cross Reference Equivalent |
|
| Copper |
Silver |
Silver Resistor |
|
| W3CC |
W3CS |
|
|
| W4CC |
W4CS |
|
|
| W4AC |
W4AS |
|
|
| W5DC |
|
WR5DS |
|
| W6DC |
|
WR6DS |
|
| W7DC |
|
WR7DS |
|
| |
|
W7DSR |
|
| |
|
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