Mercury MerCruiser Oil Filter Assembly 8M0162831
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The Mercury MerCruiser Quicksilver Oil Filter Assembly 8M0162831 is a genuine Mercury screw-on oil filter for select Mercury and Mariner 8–30 HP FourStroke outboards. It is designed to remove harmful contaminants from engine oil while maintaining proper oil flow, helping protect internal engine components during routine marine service.
Key Features
- Genuine Mercury Marine oil filter assembly
- Part number: 8M0162831
- Also referenced as 35-8M0162831
- Screw-on canister-style oil filter
- M-pleated filter media helps capture oil contaminants
- Anti-drainback valve helps reduce dry starts
- Installs with a standard oil filter wrench
- Designed for select Mercury and Mariner small-horsepower FourStroke outboards
Engine Compatibility
Fits select Mercury and Mariner FourStroke outboards, including:
- 8 / 9.9 HP FourStroke — 323 cc
- 15 / 20 HP FourStroke — carbureted models
- 15 / 20 HP EFI FourStroke — serial number 0R833820 and above
- 25 / 30 HP EFI FourStroke — model year 2006 and newer
Serial Number Fitment Notice
Oil filter fitment can vary by engine model, production year, and serial number range. Always confirm 8M0162831 against your engine serial number, parts diagram, or original filter before ordering.
When This Part Needs Replacement
Replace the oil filter during scheduled oil service, when changing engine oil, or if the filter is damaged, leaking, corroded, or overdue for maintenance. A clean oil filter helps keep contaminants out of the lubrication system and supports long-term engine protection.
Installation Notes
Lightly oil the filter gasket before installation, spin the filter on until the gasket contacts the sealing surface, then tighten according to the engine service manual. After installation, run the engine, check carefully for leaks, and recheck the oil level before returning the engine to service.
Alternate/Superseded Part Numbers
- Mercury: 8M0162831
- Mercury / Quicksilver reference: 35-8M0162831
- Supersedes: 822626K03
- Related superseded OEM references: 851847A02, 822626T1
- Related Quicksilver reference: 35-8M0162832
Parts Desk Insight
This filter is commonly used on smaller Mercury and Mariner FourStroke outboards, but serial number matters. The safest match is by engine serial number first, especially around the 15/20 HP EFI and 25/30 HP EFI applications where production range affects fitment.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 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.