Product Description
FLEECE FPE-34658-BLK-SPK 2003-2018 UPPER FAN IDLER FOR USE WITH ELECTRIC WATER PUMPS (BLACK FINISH CONTRAST CUT)
Give your Cummins front dress a serious upgrade with the FLEECE FPE-34658-BLK-SPK 2003-2018 Upper Fan Idler, engineered specifically for trucks running an electric water pump conversion. This billet aluminum idler pulley replaces the factory fan drive to clean up the front of the engine, improve belt routing, and add a custom black contrast-cut look to your 5.9L or 6.7L Cummins.
Designed around Fleece Performance’s proven accessory drive components, this idler features a durable black anodized finish with machined spokes and comes complete with a high-quality bearing for smooth, long-lasting operation. Whether you’re building a race truck, sled puller, or a clean street build, this upper fan idler helps ensure proper belt alignment and reliable performance when you delete the mechanical fan hub in favor of an electric water pump.
KEY FEATURES & BENEFITS
- Direct replacement upper fan idler for electric water pump conversions on 2003-2018 Cummins-powered Ram 2500/3500 trucks
- Billet aluminum construction for strength and reduced weight
- Black anodized finish with contrast-cut spokes for a custom under-hood appearance
- Includes a pre-installed high-quality bearing for smooth, quiet operation
- Helps maintain proper belt alignment after removing the factory mechanical fan drive
- Engineered by Fleece Performance Engineering for 5.9L and 6.7L Cummins applications
FITMENT DETAILS
The FLEECE FPE-34658-BLK-SPK Upper Fan Idler is designed for Ram trucks equipped with an electric water pump conversion:
- Vehicle Make/Model: Dodge Ram 2500 / 3500, Ram 2500 / 3500
- Engine: 5.9L & 6.7L Cummins turbodiesel
- Model Years: 2003–2018
- Configuration: For use with electric water pump conversions (replaces factory fan drive/idler location)
- Position: Upper fan idler pulley on front accessory drive
Note: This part is intended for use with an electric water pump. It does not include the water pump itself and is not a direct replacement for the OEM mechanical fan hub without an electric pump conversion.
CROSS-REFERENCE & RELATED FLEECE COMPONENTS
Pair this upper fan idler with other Fleece Performance components available at CPP Diesel to complete your Cummins accessory and front-drive setup:
- FLEECE FPE-34657-BLK-SPK 2003-2018 CUMMINS UPPER FAN PULLEY IDLER BLACK FINISH CONTRAST CUT – complementary upper fan pulley idler for 03-18 Cummins setups.
- FLEECE FPE-34277 CUMMINS DUAL PUMP IDLER PULLEY SPACER AND BOLT FOR USE WITH FPE-34022 – spacer and bolt kit for dual CP3/idler applications on 2003-2018 Cummins.
- SHOP ALL FLEECE PERFORMANCE ENGINEERING PRODUCTS AT CPP DIESEL – build a complete Fleece-powered combo for your Cummins.
WHY BUY YOUR FLEECE UPPER FAN IDLER FROM CPP DIESEL?
- Authorized Fleece Performance Engineering dealer
- Specialized in 5.9L & 6.7L Cummins performance and reliability upgrades
- Fast shipping, expert diesel support, and parts that work together
- Carefully curated catalog focused on proven diesel performance solutions
INSTALLATION NOTES
- Designed for use with an electric water pump conversion kit (sold separately)
- Verify belt routing and tension after installation
- Professional installation recommended on high-horsepower or competition builds
SPECIFICATIONS
| Brand | Fleece Performance Engineering |
| Part Number | FPE-34658-BLK-SPK |
| UPC | 670875716285 |
| GTIN | 00670875716285 |
| Application | 2003-2018 Dodge Ram / Ram 2500 & 3500 with 5.9L or 6.7L Cummins using an electric water pump conversion |
| Material | Billet aluminum |
| Finish | Black anodized with contrast-cut spoke design |
| Includes Bearing | Yes, pre-installed |
| Cross Reference | FLEECE FPE-34657-BLK-SPK (Upper Fan Pulley Idler), FLEECE FPE-34277 (Cummins Dual Pump Idler Pulley Spacer and Bolt) |
| E-Codes | Not applicable (accessory drive component) |
| Country of Origin | USA |
| Emissions / Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
| Shipping Method | Standard ground shipping; packed to protect anodized finish and bearing |
FREQUENTLY ASKED QUESTIONS
Will the FLEECE FPE-34658-BLK-SPK work with my stock mechanical water pump?
No. This upper fan idler is specifically designed for use with an electric water pump conversion. If you are still running the factory mechanical water pump and fan hub, this part is not a direct replacement.
What trucks does this upper fan idler fit?
This idler is built for 2003-2018 Dodge Ram and Ram 2500/3500 trucks equipped with the 5.9L or 6.7L Cummins diesel and converted to an electric water pump.
Does the idler include a bearing or do I need to buy one separately?
The FLEECE FPE-34658-BLK-SPK ships with a pre-installed high-quality bearing, so no additional bearing purchase is required.
Is any custom fabrication required to install this idler?
In most cases, installation is a direct bolt-on when used with a compatible electric water pump conversion. Always verify belt length and routing, and consult your specific conversion kit instructions. Professional installation is recommended on high-power builds.
Can I run this idler with other Fleece front-drive components?
Yes. Many customers pair this idler with other Fleece Performance Engineering components such as idler spacers and pulley kits to complete their Cummins accessory drive upgrade.
