Mercury Rod Holder Cap
We keep getting asked about this one — the rod holder cap is one of those Mercury parts that fails long before the rest of the unit is done. We've made this style of part before and can usually print yours without drama.

We keep getting asked about this one — the rod holder cap is one of those Mercury parts that fails long before the rest of the unit is done. We've made this style of part before and can usually print yours without drama.
Why these break
Rod holder caps crack and let water into the gunwale. Vibration fatigue does the damage: thousands of small flexes add up to a crack at the stress point, usually right where the part clips or pivots.
How we reproduce them
This is a quick job on our end — we take dimensions from your old part, adjust for print tolerances, and run a small batch so you have spares for next time.
We print these in ASA. ASA is the UV-stable cousin of ABS — it holds its colour and strength through years of Australian sun where the original plastic went chalky and brittle.
As with everything in our library: whether a part can be reproduced depends on size, load, heat, material, and having a decent sample to work from. Send photos first — the assessment costs you nothing, and we'll tell you honestly if a genuine spare is the better option.
Part details
| Manufacturer | Mercury |
|---|---|
| Vehicle / equipment type | Boat / outboard |
| Common failure mode | Rod holder caps crack and let water into the gunwale |
| Typical use case | Direct replacement for the original rod holder cap on the Mercury. |
Printing & reverse engineering
| Can print directly | Yes |
|---|---|
| Can scan from broken sample | Yes |
| Can redesign / improve | Yes |
| Recommended material | ASA |
| Alternative materials | TPU |
| Print technology | FDM |
| Difficulty | Easy |
| Estimated print time | 30–60 minutes |
| Estimated cost range | $8 – $20 |
| Expected lifespan | 3–5 years of Australian UV |
| Outdoor suitable | Yes |
| Heat resistant | No |
| Load bearing | Depends |
| Requires post-processing | No |
Ask us about this part
Many plastic parts can be recreated, repaired, redesigned, or printed, depending on size, load, heat, material, and available samples.
