Sierra Marine Short GM Oil Filter 18-7824-2 | 47-78242
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Sierra Marine Short GM Oil Filter 18-7824-2 | 47-78242
Part Number: 18-7824-2 (SKU: 47-78242)
Brand: Sierra
Product Type: Short GM Spin-On Marine Oil Filter
System: Engine Lubrication
Thread: 13/16"-16
Style: Short canister (compact)
Anti-Drain-Back Valve: Yes
UPC: 808282373177
Weight: Approx. 0.5 kg
What This Filter Does
The Sierra 18-7824-2 is a short-style spin-on marine oil filter built for GM-based inboard and sterndrive engines. It uses a 13/16"-16 thread, an anti-drain-back valve to maintain oil pressure at startup, high-efficiency filter media, and an epoxy-coated corrosion-resistant canister suited to marine service environments. Sierra notes that 18-7824-2 covers previous 18-7877 applications and is compatible with catalyst-equipped engines.
Compatible Applications
Fits selected GM-based marine engines across multiple brands. Always confirm fitment by matching the existing filter number or OEM cross-reference for your specific engine — GM marine engines can use more than one filter length and thread configuration depending on engine family and remote-filter setup.
- GM L4 / 4-cylinder marine engines
- GM Inline-6 marine engines
- GM V8 marine engines
Documented OEM application platforms:
- MerCruiser sterndrive and inboard engines
- OMC sterndrive applications
- Volvo Penta (selected GM-based applications)
- Crusader marine engines
- Indmar marine engines
- Pleasurecraft / PCM engines
- Chris-Craft applications
- Yamaha sterndrive applications
Service Interval
Replace the engine oil filter at every scheduled oil change or sooner if oil contamination or service history warrants it. Follow the engine manufacturer’s recommended oil and filter interval for your specific application.
Part Number Cross-Reference
MerCruiser: 35-802885Q, 32716, 866340Q02, 866340K01, 52731A1, 14957
OMC: 173232, 778864
Volvo Penta: 835440 / 835440-9
Crusader: 201104
Indmar: 50-1001
Pleasurecraft / PCM: R077002
Chris-Craft: 16.81-08746
Yamaha: YSC-10231-20-0C / YSC-13231-20-0C
Supersedes Sierra: 18-7877 (previous short GM filter)
Specifications
- Thread: 13/16"-16
- Style: Short spin-on canister
- Anti-Drain-Back Valve: Yes
- Canister Finish: Epoxy-coated interior, corrosion-resistant
- Catalyst Compatible: Yes
Installation Notes
- Confirm the old filter gasket has been fully removed from the engine mounting pad before installing the new filter
- Lightly coat the new filter gasket with clean engine oil before installation
- Spin on until the gasket contacts the mounting surface, then tighten per the filter or engine service recommendation — typically hand-tight plus 3/4 turn
- Do not over-tighten
- Start the engine and inspect for oil leaks at the filter base
- Recheck oil level after the filter fills and top up if needed
Parts Desk Insights
Best use case: The 18-7824-2 is the right call when the GM-based engine requires the short-canister format — most commonly where engine bay clearance prevents a standard-length filter. It’s a direct go-to for MerCruiser, Crusader, and OMC GM-block service when the existing filter or OEM cross-reference confirms 13/16"-16 short style.
Common issues: The most frequent mistake is ordering by thread size alone without confirming filter length — GM marine engines use both short and standard-length filters depending on the engine and installation. Always check the old filter’s OEM number or measure canister height before ordering. A second common issue is ordering the wrong filter when a remote oil filter adapter is installed — confirm whether the engine filters at the block or at a remote adapter before selecting.
Related Parts
- Sierra 18-7824-2 Marine Oil Filter — GM MerCruiser, Volvo Penta, OMC, Crusader & Indmar
- Mercury MerCruiser Quicksilver Oil Filter 866340K01
- Mercury MerCruiser Quicksilver Oil Filter 8M0116378
- Mercury MerCruiser High Performance Oil Filter 858004K
- Mallory 9-57825 Marine Oil Filter — GM MerCruiser, Crusader & OMC
- WIX WL10069 Premium Marine Oil Filter
- Quicksilver 4-Stroke Engine Oil 4L | 8M0078634
- Mercury MerCruiser Oil Pan Drain Plug Gasket 8M0077608
- Mercury Quicksilver Oil Filter Adapter Gasket 8M0188440 — Pack of 2
- Mercury MerCruiser Remote Oil Filter Adaptor Gasket 16779 — 4.3L / 4.3LX V6
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
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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.
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Product must be in its original packaging
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Important:
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