Product Description
CUMMINS 3946495 OEM HARMONIC BALANCER DOWEL PIN – RAM 5.9L/6.7L (2003–2018)
The genuine CUMMINS 3946495 harmonic balancer dowel pin is a critical alignment component used to properly locate the crankshaft damper (harmonic balancer) on 2003–2018 5.9L and 6.7L Cummins engines. This hardened OEM dowel pin prevents rotation or balancer slip, ensuring accurate timing reference alignment for the serpentine drive system and front gear train.
If your original dowel pin is missing, worn, or damaged during damper removal, replacing it with authentic Cummins hardware is mandatory. A loose or misaligned harmonic balancer can result in belt misalignment, vibration, premature damper failure, or even crankshaft damage. This pin is a simple, inexpensive part that protects thousands of dollars worth of rotating assembly components.
Key Features
- Genuine Cummins OEM hardened steel dowel pin.
- Ensures perfect alignment of the harmonic balancer to the crankshaft.
- Prevents balancer slippage and protects timing references.
- Required whenever installing a new damper or servicing the front cover.
- Precision-machined to Cummins tolerances for proper interference fit.
Fitment Details
- Engine Compatibility: 5.9L Cummins (2003–2007), 6.7L Cummins (2007.5–2018)
- Vehicles: Ram 2500 / 3500 (2003–2018), Ram 4500 / 5500 (6.7L medium-duty)
- Notes: Recommended for use with any balancer replacement or crankshaft service.
Cross-Reference & Companion Cummins Parts
For proper harmonic balancer installation, pair the dowel pin with other Cummins OEM components available at CPP Diesel:
- CUMMINS 3943977 HARMONIC BALANCER – 5.9L
- CUMMINS 5266043 HARMONIC BALANCER – 6.7L
- CUMMINS 3925589 CRANKSHAFT BOLT
- VIEW ALL GENUINE CUMMINS PARTS
Common cross-reference numbers: 3946495, 3946495-00 (verify by VIN/ESN).
Installation Notes
- Always replace the dowel pin when installing a new harmonic balancer.
- Inspect the crankshaft bore for debris or deformation before installation.
- Use proper support when pressing the damper onto the crankshaft.
- Torque the crankshaft bolt to Cummins specification.
Specifications for cummins 3946495
| Attribute | Value |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Cummins Part Number | 3946495 |
| Function | Harmonic balancer / crankshaft alignment dowel pin |
| Engine Compatibility | 5.9L Cummins (2003–2007), 6.7L Cummins (2007.5–2018) |
| UPC | 190910285004 |
| GTIN | 190910285004 |
| Shipping Weight | Approx. 0.01 lb |
| Shipping Method | Standard ground; expedited options available |
| E-Codes / Emissions | Not emissions-related |
| Prop 65 Warning | WARNING: May expose you to chemicals known to the State of California to cause cancer and reproductive harm. See www.P65Warnings.ca.gov. |
| Country of Origin | As labeled by Cummins (varies by batch) |
Frequently Asked Questions
DO I NEED A NEW DOWEL PIN WHEN INSTALLING A NEW HARMONIC BALANCER?
Yes. Cummins recommends replacing the dowel pin any time the balancer is removed to ensure proper alignment.
WHAT HAPPENS IF THE BALANCER IS INSTALLED WITHOUT THE DOWEL PIN?
The balancer can slip out of alignment, causing vibration, belt damage, incorrect timing reference, and potential crankshaft wear.
IS THIS PIN THE SAME FOR BOTH 5.9L AND 6.7L CUMMINS?
Yes—CUMMINS 3946495 is used across 2003–2018 5.9L and 6.7L Cummins engines.
IS THIS A GENUINE CUMMINS PART?
Yes, CPP Diesel provides only authentic Cummins OEM dowel pins for precise fitment and proper balancer alignment.
