Sierra V-Belt 47-15400 — Marine Inboard Sterndrive
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The Sierra 47-15400 is a cogged V-belt designed for accessory drive systems on marine inboard and sterndrive engines. Its notched construction improves flexibility and heat dissipation compared to a standard wrapped belt, making it well suited to the confined, high-temperature environment of a marine engine compartment. The belt drives one or more engine accessories — typically the alternator, raw-water pump, or power steering pump — depending on the pulley configuration of the specific engine.
Key Features
- High-strength synthetic cords resist shock-load failure
- Special rubber compression section for smooth, even load transfer to the cords
- Precision-molded cogs improve flexibility, maintain cord support, and allow air circulation to reduce heat build-up
- Rubber edges maintain positive, no-slip contact with pulley grooves
Application Compatibility
Designed for marine inboard and sterndrive engines that specify a cogged V-belt in the accessory drive. Confirm the original belt part number, cross-section, and outside circumference against your engine service documentation before ordering. Engine builds can vary by model year, horsepower rating, and accessory package.
Fitment Notice
Do not substitute by approximate length alone. Confirm the belt cross-section and pulley groove profile before installation. An incorrect belt width or length can result in slipping, premature wear, or accessory failure.
When This Part Needs Replacement
Replace the belt when it shows cracking, glazing, fraying, missing material, oil saturation, or persistent squealing under load. A belt that rides low in the pulley groove or requires repeated tension adjustment is likely worn and should be replaced before it causes charging or cooling problems on the water.
Installation Notes
Inspect all pulleys for wear, corrosion, misalignment, and contamination before fitting the replacement belt. Route the belt without forcing it over pulley flanges, then tension to the specification in your engine service manual. Rotate the drive by hand to confirm correct seating and recheck tension after the initial run-in period.
Alternate Part Numbers
- Sierra part number: 47-15400
- Barcode: 30999566454
Parts Desk Insights
The 47-15400 cogged belt is the right choice for accessory drive positions that specify a notched V-belt profile — the cog design runs cooler and flexes more easily than a wrapped belt, which matters in tight marine engine compartments where heat and space are both limited. If your engine uses a multi-rib serpentine drive instead of a V-belt, see the Sierra Serpentine Belt 47-15103. For other V-belt positions on the same engine, the Sierra V-Belt 47-15550 covers a different size range and may be the companion belt for your configuration. Browse the full range of drive belts in our Belts, Hoses & Clamps collection.
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.