Ignition Coil 392-7803A4 37068 for MerCruiser GM V6 V8 HEI Thunderbolt IV V
Ignition Coil 392-7803A4 37068 for MerCruiser GM V6 V8 HEI Thunderbolt IV V
Product Overview
Ignition coil set for MerCruiser GM V6 and V8 inboard and sterndrive engines with HEI Thunderbolt IV or V ignition, supplied as 1 x set of pencil coils. It replaces MerCruiser 392-7803, 392-7803A4, 392-805570A1, 392-805570A2 and 300-8M0079202, plus Sierra 18-5438, EMP 300-00879 and Crusader 37068. A failed coil shows up as a dead cylinder, a rough idle, a misfire under load, or an engine that cuts out once warm.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Ignition Coil (Pencil Coil Set) |
| Engine Type | MerCruiser GM V6 and V8 inboard / sterndrive |
| Ignition | HEI Thunderbolt IV and V |
| Warranty | Standard |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| MerCruiser | 392-7803, 392-7803A4, 392-805570A1, 392-805570A2, 300-8M0079202 |
| Sierra | 18-5438 |
| EMP | 300-00879 |
| Crusader | 37068 |
Compatible Engines
Fits the following MerCruiser engines, 1981 and later:
| Model | Notes |
|---|---|
| 260 | GM V8 |
| 340 | GM V8 |
| 5.7 L | Carburetted |
| 8.2 L | Carburetted |
| 350 MAG | MAG SKI |
| 350 MAG | MPI HORIZON |
| 350 MAG | MPI |
What's Included
| Component | Qty |
|---|---|
| Pencil Coil Set | 1 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Verify your engine model, year and serial number before ordering
- Fits GM V6 and V8 engines with HEI Thunderbolt IV or V ignition
- Check the cap, rotor and plug leads before replacing the coils
- Supplied as a set — spark plugs are not included
- 30-Day Easy Returns
- Free Worldwide Shipping
- OEM Quality Without the Markup
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Before You Buy
Frequently Asked Questions
What is your refund policy?
We offer a 14-day hassle-free return on all products. Items must be unused and in original packaging. Every XRmarine part is also covered by our 1-year warranty against manufacturing defects. If something is not right, email us at info@xrmarineparts.com — replacement or full refund, your choice.
See our full Refund Policy for complete details.
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