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Description
Idler Pulley – Fits Volvo Penta D4 & D6 Series Diesel Engines (3847482)Idler Pulley Fits Volvo Penta D4 & D6 Series Diesel Engines (3847482) This aftermarket idler pulley is engineered for Volvo Penta D4 series (180300 HP) and D6 series (280435 HP) 4 stroke diesel engines, covering models from 2003 to the present. It maintains proper serpentine belt tension, which is critical for the reliable operation of engine accessories. Designed as a direct replacement for Volvo Penta part number 3847482, this pulley ensures a
Idler Pulley – Fits Volvo Penta D4 & D6 Series Diesel Engines (3847482)
This aftermarket idler pulley is engineered for Volvo Penta D4 series (180–300 HP) and D6 series (280–435 HP) 4-stroke diesel engines, covering models from 2003 to the present. It maintains proper serpentine belt tension, which is critical for the reliable operation of engine accessories.
Designed as a direct replacement for Volvo Penta part number 3847482, this pulley ensures a precise fit and straightforward installation without the need for modifications.
- Compatibility: Designed specifically for Volvo Penta D4 & D6 diesel engines.
- Installation: Features a direct bolt-on design for easy replacement.
- Built for Durability: Constructed from high-grade durable materials to withstand marine engine conditions.
Part Number Cross-Reference
Use this table to confirm that this part is a suitable replacement for your original component.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3847482 |
Compatible Engine Models
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Volvo Penta | D4-180I-B | 180 | 4-Stroke | 2005–2008 | 3847482 | |
| Volvo Penta | D4-180I-C | 180 | 4-Stroke | 2008–2009 | 3847482 | |
| Volvo Penta | D4-180I-D | 180 | 4-Stroke | 2009–2010 | 3847482 | |
| Volvo Penta | D4-180I-E | 180 | 4-Stroke | 2010 | 3847482 | |
| Volvo Penta | D4-210I-A | 210 | 4-Stroke | 2003–2004 | 3847482 | |
| Volvo Penta | D4-210I-B | 210 | 4-Stroke | 2004–2006 | 3847482 | |
| Volvo Penta | D4-225I-B | 225 | 4-Stroke | 2005–2008 | 3847482 | |
| Volvo Penta | D4-225I-C | 225 | 4-Stroke | 2008–2009 | 3847482 | |
| Volvo Penta | D4-225I-D | 225 | 4-Stroke | 2009–2010 | 3847482 | |
| Volvo Penta | D4-260I-A | 260 | 4-Stroke | 2004 | 3847482 | |
| Volvo Penta | D4-260I-B | 260 | 4-Stroke | 2004–2008 | 3847482 | |
| Volvo Penta | D4-260I-C | 260 | 4-Stroke | 2008–2009 | 3847482 | |
| Volvo Penta | D4-260I-D | 260 | 4-Stroke | 2009–2010 | 3847482 | |
| Volvo Penta | D4-260I-E | 260 | 4-Stroke | 2010 | 3847482 | |
| Volvo Penta | D4-300I-A | 300 | 4-Stroke | 2007–2008 | 3847482 | |
| Volvo Penta | D4-300I-C | 300 | 4-Stroke | 2008–2009 | 3847482 | |
| Volvo Penta | D4-300I-D | 300 | 4-Stroke | 2009–2010 | 3847482 | |
| Volvo Penta | D6-280A-A | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-280A-B | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-280A-C | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-280A-D | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-280A-E | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-280I-A | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-280I-B | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-280I-C | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-280I-D | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-280I-E | 280 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-300A-F | 300 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-300D-F | 300 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-300I-F | 300 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-310A-A | 310 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-330A-F | 330 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-330D-F | 330 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-330I-F | 330 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-370A-F | 370 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-370D-F | 370 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-370I-F | 370 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-400A-F | 400 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-435D-F | 435 | 4-Stroke | 2003–present | 3847482 | |
| Volvo Penta | D6-435I | 435 | 4-Stroke | 2003–present | 3847482 |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Idler Pulley |
| Installation | Direct bolt-on |
| Housing Material | High-grade durable materials |
| Weight | 0.31 kg (0.68 lbs) |
| Warranty | 1-year (aftermarket) |
Package Contents
- 1 x Idler Pulley (3847482)
Explosion Diagram
Installation Guide
Follow these general steps for replacement. Refer to your engine’s service manual for detailed instructions and torque specifications.
- Safety First: Disconnect the battery terminals to prevent accidental starting.
- Locate Components: Identify the serpentine belt, the belt tensioner, and the old idler pulley.
- Release Belt Tension: Use a breaker bar or appropriate tool on the belt tensioner to loosen the serpentine belt.
- Remove Belt: Carefully slide the belt off the idler pulley and other accessory pulleys.
- Remove Old Pulley: Use a socket wrench to unbolt and remove the old idler pulley from its mounting point.
- Clean Surface: Thoroughly clean the mounting surface to ensure the new pulley sits flush.
- Install New Pulley: Position the new idler pulley and hand-tighten the mounting bolt.
- Torque to Spec: Use a torque wrench to tighten the bolt to the manufacturer's recommended specification. Do not overtighten.
- Reinstall Belt: Route the serpentine belt according to the diagram in your service manual, ensuring it is seated correctly in all pulley grooves.
- Final Check: Reconnect the battery, start the engine, and listen for any unusual noises. Visually inspect the pulley and belt to confirm smooth operation.
Troubleshooting & FAQ
Q: How can I confirm this idler pulley fits my engine?
A: This pulley is designed for specific Volvo Penta D4 and D6 series diesel engines. To ensure a correct fit, please find your exact engine model (e.g., D4-225I-D) in the "Compatible Engine Models" table above. Verifying that your original part number is 3847482 is the most reliable method.
Q: What are common signs that my idler pulley needs replacement?
A: Key symptoms of a failing idler pulley include a persistent squealing, chirping, or grinding noise from the engine bay, visible wobble or excessive play in the pulley itself, or a serpentine belt that repeatedly slips off or shows premature wear.
Q: Is this part built to the same standards as the original Volvo Penta component?
A: This is an aftermarket component manufactured from high-grade durable materials designed to meet or exceed OEM performance requirements. While the material composition may differ, it is built for reliable performance in demanding marine environments.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5–15 days.
- Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy