Volvo Penta Duoprop Rear Propeller Thrust Ring 3858458
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Volvo Penta OEM Duoprop Rear Propeller Thrust Ring – Part No. 3858458
| Part Number | 3858458 |
| Brand | Volvo Penta |
| Component Type | Rear Propeller Thrust Ring / Thrust Washer |
| System | Duoprop Propeller Shaft Assembly |
| Position | Rear propeller — do not interchange with front thrust ring 3858457 |
| Propeller Types | Type A, B, C, and J Duoprop propellers |
| Quantity Per Assembly | 1 |
| Weight | Approx. 0.5 kg |
| Supersedes | No documented supersession — 3858458 is the current active OEM number |
| Replaced By | No documented replacement |
| Related Front Thrust Ring | 3858457 (front position — sold separately) |
| Related Propeller Nut | 3851334 (sold separately) |
Compatible Applications
Confirm fitment by sterndrive model, serial number, and propeller type before ordering. Both thrust ring part numbers (3858457 front / 3858458 rear) appear in the same hardware assembly — they are not interchangeable.
- Volvo Penta 280 DP sterndrive
- Volvo Penta 290 DP sterndrive
- Volvo Penta DP-A through DP-G configurations
- Additional Volvo Penta DP sterndrive configurations using Type A, B, C, or J Duoprop propellers
When to Replace
Replace the thrust ring if it is worn, distorted, cracked, or corroded around its thrust or locating surfaces. Inspect it whenever the Duoprop propellers are removed for service — including fishing-line clearance checks and propeller shaft maintenance — since the ring is accessible and inexpensive to replace at that point.
Installation Notes
Before installation, clean and inspect the propeller shaft, thrust surfaces, and propeller hubs. Confirm that 3858458 is installed in the rear propeller position. Inspect the front thrust ring (3858457), propeller nut (3851334), spacer ring, washer, and propeller cone hardware at the same time.
Technical FAQ
What is the difference between 3858457 and 3858458?
3858457 is the front propeller thrust ring; 3858458 is the rear. Both are used in the same Duoprop assembly and must be installed in the correct position. Interchanging them can result in improper thrust transfer and propeller hardware failure.
Do I need to replace both thrust rings at the same time?
Not always — but since both parts are exposed to the same wear conditions and are accessible together during propeller removal, replacing both as a set is generally the more economical long-term choice.
Does this fit all Volvo Penta Duoprop drives?
3858458 is confirmed for Type A, B, C, and J propeller installations on DP-series sterndrives. Other Duoprop configurations should be verified by drive model, serial number, and propeller type before ordering.
Is the GLM 23153 a direct equivalent?
GLM 23153 is listed as an aftermarket reference for this position. As with any aftermarket part, verify the cross-reference against your exact drive model before use.
Parts Desk Insights
The front and rear Duoprop thrust rings look similar and sit right next to each other in the assembly, which makes them one of the more common mix-up items during propeller hardware orders. Customers usually need this ring during propeller removal for fishing-line damage inspection or seasonal service — it’s a good opportunity to replace both rings and the propeller nut together rather than making a second trip for hardware that was borderline.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
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For return authorization, please contact our support team before shipping anything back.