Volvo Penta Propeller Nut 21631162
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Volvo Penta 21631162 is a genuine OEM propeller nut used on selected Volvo Penta DuoProp applications. Volvo Penta's official parts shop identifies part 21631162 as propeller nut, and current dealer listings consistently describe it as the rear propeller nut for certain Volvo Penta propeller setups.
Current parts-market references connect 21631162 with selected DPS / DuoProp hardware applications, including listings that specifically call out F-series rear propeller use and other sources that associate it with D, F, and I series rear propeller hardware. Several current sellers also show 3851341 as the replaced or cross-referenced earlier number.
Key Features
- Genuine Volvo Penta OEM propeller nut
- Part number: 21631162
- Commonly listed as a rear propeller nut
- Used in selected Volvo Penta DuoProp / DPS propeller hardware setups
- Current dealer listings show approximate part weight around 0.071 kg, consistent with small prop hardware.
Engine Compatibility
Available current sources tie Volvo Penta 21631162 to selected DPS and DuoProp propeller applications rather than a single engine family. Current market references specifically connect it to:
- selected DPS applications
- selected D, F, and I series DuoProp rear propeller hardware
- F-series rear propeller nut applications in Volvo Penta hardware listings.
Serial Number Fitment Notice
Fitment should always be confirmed by drive model, propeller series, and serial number before ordering. Volvo Penta's official shop advises identifying the exact engine, shield, or drive when locating the correct replacement part.
When This Part Needs Replacement
Replace this propeller nut when:
- the original nut is rounded, damaged, or seized
- propeller service shows worn or compromised fastening hardware
- thread condition is poor or corrosion is present
- the propeller hardware stack is being refreshed during service
- the existing nut no longer secures the propeller correctly
Installation Notes
- Confirm the exact drive and propeller series before ordering.
- Inspect the shaft threads and related thrust washer / spacer hardware during service.
- Use the correct socket size and tightening procedure for the application.
- Replace questionable or badly corroded hardware during propeller service rather than reusing it. Current dealer guidance for this part notes use of a 1 3/16 in. deep socket on at least one listed application.
Alternate/Superseded Part Numbers
- 21631162
- Replaces / cross-referenced from: 3851341
Parts Desk Insight
On DuoProp drives, the nut is a small part that does an important job. When customers are already pulling props for fishing-line checks, seal inspection, or seasonal service, it is a good time to inspect the nut and related prop hardware for corrosion, thread wear, or past tool damage. Hardware issues here are much cheaper to deal with on the bench than after they turn into a stuck-prop or fastening problem on the water.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
- locally warehoused → "Ships within 3 days for fast Canada wide shipping. ⚓"
- In Stock → "Ships in 1–3 business days for fast Canada wide shipping. ⚓"
- OEM parts (in stock) → same or next day
Returns & warranty
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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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