Sierra Marine - Premium Marine Oil Filter - 18-7824-2
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The Sierra Marine 18-7824-2 Premium Marine Oil Filter is a short-canister spin-on replacement oil filter designed for compatible GM-based marine engines used in sterndrive and inboard applications. Built for marine service, it uses a corrosion-resistant canister finish, high-efficiency filter media, an anti-drainback valve, and a bypass relief valve to help maintain reliable oil flow and engine protection.
This filter is commonly used where the engine manufacturer's parts lookup, existing filter, or cross-reference chart calls for Sierra 18-7824-2 or a verified equivalent.
Key Features
- Sierra Marine premium replacement oil filter.
- Part number: 18-7824-2.
- Filter style: spin-on short canister.
- Thread reference: 13/16 in.-16.
- Includes anti-drainback valve to help reduce dry-start conditions.
- Includes bypass relief valve to maintain oil flow if the filter becomes restricted.
- Heavy-wall steel canister for marine engine service.
- Marine-grade epoxy outer coating helps resist corrosion in damp bilge and engine-room environments.
- High-efficiency synthetic blend filtration media.
- Designed to meet or exceed applicable OEM-style marine filtration requirements where this filter is specified.
Engine Compatibility
Common application context includes compatible GM-based marine engines where this short-canister filter and cross-reference group are specified, including:
- GM-based 4-cylinder marine engines.
- GM-based inline-6 marine engines.
- GM-based V8 marine engines.
- MerCruiser / Mercury sterndrive and inboard applications where a matching OEM number is listed.
- Volvo Penta gasoline sterndrive and inboard applications where a matching OEM number is listed.
- OMC, Crusader, Indmar, and Yamaha sterndrive applications where the filter chart confirms this replacement.
Use this filter only where the engine model, serial number, thread, gasket size, canister clearance, and OEM part number match the application.
Serial Number Fitment Notice
Confirm fitment by engine model, serial number, existing filter part number, mounting thread, gasket diameter, and available canister clearance before ordering. Marine oil filters can look similar but differ in length, thread, bypass-valve setting, gasket size, and internal construction.
When replacing an oil filter, always verify against the engine manufacturer's service information or the number on the filter being removed.
When This Part Needs Replacement
Replace the oil filter at every scheduled engine oil change, during seasonal service, after oil contamination, after extended storage, or whenever the filter is dented, rusted, leaking, or past its recommended service interval.
Replacement is also recommended after overheating, water-contaminated oil, major engine service, or when changing oil type.
Installation Notes
Warm the engine briefly, shut it down, and allow the oil to drain according to the service procedure. Remove the old filter and confirm the old gasket did not remain stuck to the filter mount. Clean the sealing surface before installation.
Lightly oil the new gasket with clean engine oil, spin the filter on by hand, and tighten according to the engine or filter instructions. Do not over-tighten. Refill with the correct marine engine oil, run the engine, check oil pressure, inspect for leaks, and recheck the oil level after shutdown.
Alternate / Cross-Reference Part Numbers
- Sierra Marine 18-7824-2 — primary part number
- Mercury / MerCruiser 35-866340K01 — cross-reference; verify by engine serial number
- Mercury / MerCruiser 35-802885Q — cross-reference; verify by engine serial number
- Mercury / MerCruiser 35-801885T — cross-reference; verify by engine serial number
- Mercury / MerCruiser 35-866340Q02 — cross-reference; verify by engine serial number
- Mercury / MerCruiser 35-866340Q03 — cross-reference; verify by engine serial number
- Mercury / MerCruiser 35-8M0154751 — cross-reference; verify by engine serial number
- Volvo Penta 3852030 — cross-reference; verify by engine model
- Volvo Penta 3852412 — cross-reference; verify by engine model
- Volvo Penta 835440 — cross-reference; verify by engine model
- OMC 173232 — cross-reference; verify by application
- OMC 502902 — cross-reference; verify by application
- OMC 778864 — cross-reference; verify by application
- Crusader 201104 — cross-reference; verify by application
- Indmar 50-1001 — cross-reference; verify by application
- Indmar 872023 — cross-reference; verify by application
- Yamaha Sterndrive YSC-10231-20-0C — cross-reference; verify by application
- Yamaha Sterndrive YSC-13231-20-0C — cross-reference; verify by application
Parts Desk Insight
This is a short-canister marine oil filter, so both fitment and clearance matter. The correct replacement must match the engine's thread, gasket seat, bypass design, and canister size. In marine engine rooms, the corrosion-resistant finish is also important because standard automotive filters can rust quickly in damp bilge conditions.
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.