Gates 9415 V-Belt | 41.5 in. Effective Length
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Gates 9415 V-Belt — 41.5 in. Effective Length
| Part Number | 9415 |
|---|---|
| Brand | Gates |
| Official Product Type | Notched High-Capacity V-Belt |
| Cross Section | HC50 |
| Effective Length | 41.5 in. / 1,054 mm |
| Outside Circumference | 42.12 in. / 1,070 mm |
| Top Width | approx. 0.47–0.48 in. / 12 mm |
| Thickness | approx. 0.36 in. / 9 mm |
| Belt Material | EPDM |
| Cord Material | Polyester |
| UPC | 072053312089 |
| System | Accessory Drive — alternator, raw-water pump, power steering, A/C, fan |
| Supersedes | Contact us to confirm supersession for your specific engine and application |
| Replaced By | Verify current production status at time of order |
Overview
The Gates 9415 is a notched, high-capacity V-belt engineered for accessory-drive systems where a conventional belt would overheat or crack under sustained flex. The notched construction reduces heat buildup and improves grip on smaller-diameter pulleys, making it a reliable choice for marine, automotive, and light industrial accessory drives. Match by effective length, cross-section, and pulley groove profile — do not substitute by outside circumference alone.
Compatible Applications
- Alternator drives
- Raw-water pump drives
- Power-steering pump drives
- Air-conditioning compressor drives
- Cooling fan drives
- Other accessory-drive positions matched to HC50 / 41.5 in. effective length
Fitment note: Confirm the OEM part number, belt cross-section, and pulley groove profile before ordering. Engine builds vary by model year, horsepower, and accessory package. If you are installing this on a Volvo Penta engine, verify the full Volvo OEM number from your engine's service documentation before using this belt as a replacement — the Gates 9415 designation is not itself a Volvo Penta OEM part number.
Dimensions
- Effective length: 41.5 in. / 1,054 mm
- Outside circumference: 42.12 in. / 1,070 mm
- Top width: approx. 0.47–0.48 in. / 12 mm
- Thickness: approx. 0.36 in. / 9 mm
- Cross section: HC50
Kit Contents
- 1 × Gates 9415 V-belt
- No hardware included
Service Interval
Inspect at every seasonal service or engine-hour interval specified by the equipment manufacturer. Replace when the belt shows any of the following:
- Cracking, chunking, or missing material
- Frayed or glazed sidewalls
- Oil saturation
- Rides low in the pulley groove
- Squealing or slipping under load
- Requires repeated tension adjustment
On dual-belt drive configurations, replace both belts at the same interval even if only one shows visible wear.
Installation Notes
- Inspect all pulleys for wear, corrosion, misalignment, and contamination before fitting the new belt
- Route the belt without forcing it over pulley flanges
- Tension to the specification in your engine's service manual — do not rely on visual tightness alone
- Rotate the drive by hand after installation to confirm correct seating
- Recheck tension after the initial run-in period
- If an idler pulley shows wear or play, replace it at the same service visit
Cross-Reference / Alternate Part Numbers
- Gates: 9415
- NAPA: 25-9415 / 259415
- Dayco: 17415
- ACDelco: 17415
- Continental: 17415
These are dimensional/application cross-references. Always verify fitment against your equipment's OEM part number.
Related Parts
- Gates 9319 V-Belt — 32 in. Effective Length (common companion belt on dual-belt accessory drives)
- Volvo Penta Idler Pulley 3860201
- Volvo Penta Idler Pulley 3847482
Browse the full range: Volvo Penta Belts | Belts, Hoses & Clamps
Technical FAQ
- Is Gates 9415 a Volvo Penta OEM part number?
- No. Gates 9415 is a Gates belt designation. If you need a belt for a Volvo Penta engine, cross-reference your engine's service manual for the full Volvo OEM number and verify dimensional compatibility before ordering.
- What is the difference between effective length and outside circumference?
- Effective length (41.5 in.) is measured at the belt's pitch line — the load-carrying cord layer — and is the correct measurement to match against OEM specifications. Outside circumference (42.12 in.) is the total outer dimension and is typically larger.
- Can I install only one belt if I have a dual-belt drive?
- Technically yes, but it is strongly recommended to replace both belts at the same time. Mismatched belt wear causes uneven load distribution and can shorten the life of the new belt significantly.
- What pulleys should I inspect when replacing this belt?
- Check all accessory pulleys (alternator, pump, crankshaft), the idler pulley, and any tensioner for groove wear, bearing play, and misalignment. A worn pulley will quickly damage a new belt.
- How do I confirm this belt fits my engine?
- Match by: (1) existing OEM belt part number, (2) effective length, (3) cross-section / top width, and (4) pulley groove profile. Contact us if you need help confirming fitment.
Parts Desk Insights
Best use case: The Gates 9415 is a well-suited replacement for HC50-class accessory drive belts across marine and automotive applications. It's a common choice for dual-belt drive setups where the 9415 and a shorter companion belt (such as the Gates 9319) each handle a separate accessory position. The notched EPDM construction holds up well in hot, high-humidity marine engine compartments.
Common customer questions: The most frequent point of confusion is whether 9415 is a Volvo Penta OEM number — it is not. Customers ordering for Volvo Penta AQ or BB series engines should confirm the full Volvo OEM part number from their engine's service manual before purchasing. When asked about pairing, the 9319 is the typical companion belt for dual-belt configurations. Always recommend inspecting idler pulleys at the same service visit — worn pulleys are a leading cause of premature belt failure.
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.