⚡ Ignite your Mercruiser’s heart with precision power!
This RPS Thunderbolt Distributor Cap and Rotor Kit is engineered for Mercruiser V8 engines (5.0L to 8.2L) featuring Thunderbolt I and IV ignition systems. The kit includes a high-quality distributor cap with brass terminals, rotor, gasket, and screws, delivering OEM-level performance and durability at a fraction of the cost. Perfect for marine enthusiasts seeking reliable ignition upgrades compatible with GM-based engines from the early 1980s onward.
| Brand | RPS |
| Color | Black |
| Material | Brass |
| Vehicle Service Type | Watercraft |
| Closure Type | Twist-On |
| Manufacturer | RPS |
| Style | Modern |
| UPC | 701649134711 |
| Item Weight | 14.9 ounces |
| Package Dimensions | 5.31 x 4.57 x 4.25 inches |
| Item model number | 805759Q3, 805759T3 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | unknown |
J**R
Tight fit
Cap is well made, once i cut ( yes drill and cut) the old screws off, i pulled the dist and drilled and tapped the original distributor body, cap fit is tight and thats good. Want watertight!
D**R
Quality is good
It was a little tight to fit over distributor but that’s good it helps keeping sparks inside
J**.
Great kit
Great kit for 7.4 mercruiser MPI engine
O**T
be careful they ar brittle
fit ok the way the wires hook up makes the cap weak.
M**A
Fantastic I buying again.
Fantastic I buying again.
B**E
Great OEM replacement
Perfect fit, exactly like the original it replaced.
P**N
I would recommend this very highly!! Worked perfect.
I would recommend this very highly!! Worked perfect.
V**R
Thunderbolt distributor cap
Doesnt seem to fit exactly as it should and the vent adapter threads were different than the threads in the cap. Had to use a tap and die on the vent to install
Trustpilot
3 days ago
1 week ago
