Volvo Penta — Lock Ring — 872522
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Volvo Penta Lock Ring 872522
Volvo Penta 872522 is a genuine OEM retaining ring used to secure internal components within Volvo Penta gear sets and driveline assemblies. It provides positive mechanical retention, preventing axial movement of components under load and helping keep the assembly properly aligned.
Key Features
- Genuine Volvo Penta OEM lock ring
- Secures internal components against axial movement and separation
- Hardened spring-steel construction
- Built for high-load marine driveline environments
- Direct OEM replacement
Compatible Applications
- Volvo Penta diesel engines: AD31, TAMD31, TAMD41, KAD42, KAMD42
- Volvo Penta propulsion systems: DPI-A, IPS series, HS1 transmissions
- Used in gear-set and reverse-reduction gear assemblies alongside internal components such as piston rings, disc springs, and thrust washers
Serial Number Fitment Notice
Lock rings are size- and groove-specific. Confirm compatibility using the engine or drive serial number before ordering.
When This Part Needs Replacement
- Loss of retention or looseness in the assembly
- Deformation or loss of spring tension
- Corrosion or wear
- During a gear or driveline rebuild
- Preventative replacement during major service
Installation Notes
- Ensure proper seating in the groove
- Do not reuse a distorted or stretched ring
- Use correct snap-ring pliers for installation
- Inspect the groove and mating components
- Confirm full engagement before assembly
Related Parts
Often used alongside piston ring 872563, thrust washer 872570, and disc spring 872794.
Parts Desk Insights
Best use case: Replacing this ring during any gear or driveline teardown rather than reusing the original, since a failed or improperly seated ring can let an entire gear assembly shift and cause further damage.
Most common mistake: Reinstalling a distorted or stretched ring, or reusing one after disassembly instead of replacing it.
Sizing/fitment guidance: Lock rings are size- and groove-specific, so confirm fitment against your engine or drive serial number before ordering rather than matching by appearance.
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.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.