Product Description
MOPAR 68503521AA FUEL RAIL SUPPLY LINE FOR 19-24 RAM WITH 6.7L CUMMINS ENGINE
Maintain proper fuel delivery and high-pressure fuel system performance with the genuine Mopar 68503521AA Fuel Rail Supply Line. Engineered specifically for 2019-2024 Ram trucks equipped with the 6.7L Cummins turbo diesel engine, this OEM fuel line ensures precise fuel flow from the high-pressure system to the fuel rail for optimal engine efficiency and reliability.
A damaged or leaking fuel rail supply line can cause hard starts, fuel pressure issues, poor engine performance, fuel leaks, and diagnostic trouble codes. Genuine Mopar fuel system components are manufactured to exact factory tolerances for proper sealing, durability, and long-term reliability under extreme diesel fuel pressures.
Designed for direct OEM replacement, Mopar 68503521AA helps restore factory fuel system integrity while maintaining proper injector performance and emissions compliance.
Frequently Asked Questions (FAQ)
What does the fuel rail supply line do?
The fuel rail supply line transfers high-pressure fuel from the fuel system to the fuel rail for proper injector operation and engine performance.
Is this a genuine OEM Mopar fuel line?
Yes — this is a genuine Mopar OEM fuel rail supply line designed specifically for Ram trucks with the 6.7L Cummins diesel engine.
What are signs of a failing fuel supply line?
Common symptoms include fuel leaks, low fuel rail pressure, hard starting, rough running, fuel odor, and check engine lights.
Why replace with OEM instead of aftermarket?
OEM Mopar fuel lines are engineered to handle the extreme pressures of the Cummins high-pressure common rail fuel system while ensuring proper fitment and sealing.
Fitment Details
- 2019 Ram 2500 6.7L Cummins Diesel
- 2019 Ram 3500 6.7L Cummins Diesel
- 2020 Ram 2500/3500 6.7L Cummins Diesel
- 2021 Ram 2500/3500 6.7L Cummins Diesel
- 2022 Ram 2500/3500 6.7L Cummins Diesel
- 2023 Ram 2500/3500 6.7L Cummins Diesel
- 2024 Ram 2500/3500 6.7L Cummins Diesel
- Direct OEM replacement fuel rail supply line
- Verify fitment by VIN before ordering
Specifications for Mopar 68503521AA
| Category | Details |
|---|---|
| Part Number | 68503521AA |
| Brand | Mopar (OEM) |
| Product Type | Fuel Rail Supply Line |
| Engine Compatibility | 6.7L Cummins Turbo Diesel |
| Vehicle Fitment | 2019-2024 Ram 2500 & 3500 |
| Fuel System Type | High-Pressure Common Rail Diesel |
| Function | Supplies high-pressure fuel to fuel rail |
| Material | OEM High-Strength Steel Construction |
| Installation Type | Direct OEM Replacement |
| Connector Style | Factory OEM Fittings |
| UPC | Not Available |
| GTIN | Not Available |
| Shipping Weight | Approx. 2 lbs |
| Shipping Dimensions | Approx. 18" x 6" x 4" |
| Shipping | Standard ground shipping available |
| Country of Origin | OEM Supplier Manufactured |
| Prop 65 | WARNING: Cancer and reproductive harm – www.P65Warnings.ca.gov |
| Condition | New |
