Crown J8121789 Ballast Resistor 63-71 Jeep CJ5 CJ6 Grand Wagoneer Cherokee
Confirm Fitment Before You Buy
Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$22.64
Select your vehicle at the top of the page to check fitment.
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Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
Ignition Coil Ballast Resistor for Select 66-71 Jeep Models w/ V6 Engine. Replaces OE part number J8121789. Ships direct from the Crown warehouse.
- Universal Type
- .05-.06 ohms
- Direct Replacement
- Use Existing Hardware
- 12-Month Warranty
Notes: .05-.06 ohms (Universal Type) w/ Hardware Package
In the box: (1) Ballast Resistor
Vehicle Fitment
| Year | Make | Model | Notes |
|---|---|---|---|
| 1966-1971 | Jeep | CJ5 | w/ V6-225 Engine |
| 1966-1971 | Jeep | CJ6 | w/ V6-225 Engine |
| 1963-1964 | Jeep | Cherokee | w/ S6-230 Engine |
| 1966-1971 | Jeep | Commando | w/ V6-225 Engine |
| 1963-1964 | Jeep | Grand Wagoneer | w/ S6-230 Engine |
| 1963-1964 | Jeep | J-200 | w/ S6-230 Engine |
| 1963-1964 | Jeep | J-2000 | w/ S6-230 Engine |
| 1963-1964 | Jeep | J-300 | w/ S6-230 Engine |
| 1963-1964 | Jeep | J-3000 | w/ S6-230 Engine |
| 1963-1964 | Jeep | J-4000 | w/ S6-230 Engine |
| 1963-1964 | Jeep | J10 | w/ S6-230 Engine |
| 1963-1964 | Jeep | J20 | w/ S6-230 Engine |
| 1963-1964 | Jeep | Wagoneer | w/ S6-230 Engine |
Please confirm the part number and your vehicle's year, model and engine before ordering. Questions? Message us with your VIN and we'll check fitment for you.
Specifications
| Brand | Crown |
|---|---|
| Part Number | J8121789 |
| Replaces OE Number | J8121789 |
| UPC | 848399067040 |
| Engine | 3.8L (S6-230) 62/64 Jeep, 3.8L (S6-230) (62/64 Jeep), 3.7L (V6-225) 66/71 |
| Material | Ceramic, Metal |
| Color / Finish | Unpainted |
| Hardware | Use Existing Hardware |
| Sold As | Each |
| Dimensions | 3.25 x 1.25 x 1.25 in. |
| Weight | 0.13 lb |
| Warranty | 12 Month |
| Interchange Numbers | 8121789 |
| Country of Origin | US |
Part numbers are used for reference purposes only. No implication is made that the parts supplied are the product of the original equipment manufacturer.