Product Description
MOPAR 57008975AB DIESEL EXHAUST FLUID (DEF) SUPPLY LINE FOR 19-24 RAM WITH 6.7L CUMMINS ENGINE
Restore proper DEF delivery and maintain factory emissions system performance with the genuine Mopar 57008975AB Diesel Exhaust Fluid (DEF) Supply Line for 2019-2024 Ram trucks equipped with the 6.7L Cummins turbo diesel engine. This OEM DEF feed line is engineered to transport diesel exhaust fluid from the DEF tank to the SCR injection system with reliable pressure, leak-free operation, and factory-correct routing.
The Mopar 57008975AB DEF supply tube is a direct OEM replacement designed to withstand harsh operating conditions including DEF crystallization, freezing temperatures, vibration, road debris, and prolonged chemical exposure. A damaged or leaking DEF line can trigger emissions system faults, DEF quality warnings, reduced engine performance, limp mode conditions, or SCR system failure.
Manufactured to strict Mopar factory specifications, this genuine DEF supply line ensures proper fitment, secure factory-style connections, and long-term reliability under demanding diesel operating environments. Unlike universal aftermarket lines, this OEM Mopar component maintains correct DEF flow rates and compatibility with factory emissions components.
This DEF supply line replaces several earlier Mopar superseded part numbers and is commonly serviced when addressing SCR system leaks, DEF crystallization damage, or emissions-related fault codes on 6.7L Cummins-equipped Ram trucks.
FAQ
What does the DEF supply line do?
The DEF supply line transfers diesel exhaust fluid from the DEF tank to the SCR injector system to help reduce NOx emissions.
What are common signs of a failing DEF line?
Common symptoms include DEF leaks, crystallized fluid buildup, emissions warning lights, SCR efficiency codes, reduced power mode, and DEF system performance issues.
Is this a genuine Mopar OEM DEF line?
Yes. The 57008975AB is a genuine OEM Mopar DEF supply tube engineered specifically for Ram 6.7L Cummins applications.
Will this fit both standard output and high output Cummins engines?
Yes. This DEF supply line is compatible with many standard and high output 6.7L Cummins-equipped Ram trucks depending on VIN configuration.
Does this replace older Mopar DEF line part numbers?
Yes. Mopar 57008975AB supersedes several earlier DEF supply line revisions.
Vehicle Fitment
- 2019 Ram 2500 6.7L Cummins Diesel
- 2020 Ram 2500 6.7L Cummins Diesel
- 2021 Ram 2500 6.7L Cummins Diesel
- 2022 Ram 2500 6.7L Cummins Diesel
- 2023 Ram 2500 6.7L Cummins Diesel
- 2024 Ram 2500 6.7L Cummins Diesel
- 2019 Ram 3500 6.7L Cummins Diesel
- 2020 Ram 3500 6.7L Cummins Diesel
- 2021 Ram 3500 6.7L Cummins Diesel
- 2022 Ram 3500 6.7L Cummins Diesel
- 2023 Ram 3500 6.7L Cummins Diesel
- 2024 Ram 3500 6.7L Cummins Diesel
Fits Select Trims Including:
Tradesman, Big Horn, Lone Star, Laramie, Limited Longhorn, Limited, Power Wagon, Chassis Cab Models
Specifications for Mopar 57008975AB
| Category | Details |
|---|---|
| Part Number | 57008975AB |
| Brand | Mopar (OEM) |
| Product Type | Diesel Exhaust Fluid (DEF) Supply Line / DEF Feed Tube |
| Engine Compatibility | 6.7L I6 Cummins Turbo Diesel |
| Vehicle Fitment | 2019-2024 Ram 2500/3500 |
| Function | Transfers diesel exhaust fluid from DEF tank to SCR injection system |
| Emission System Compatibility | Selective Catalytic Reduction (SCR) DEF System |
| Installation Type | Direct OEM Replacement |
| Construction | Chemical-Resistant OEM DEF Line Assembly |
| Fluid Compatibility | Diesel Exhaust Fluid (DEF) |
| Replaces Part Numbers | 57008975AA, 68353829AB, 68353829AC, 68353829AD, 68353829AE |
| UPC | Not Available |
| GTIN | Not Available |
| Shipping Weight | Approx. 3 lbs |
| Shipping Dimensions | Approx. 24" x 12" x 6" |
| Shipping | Standard ground shipping available |
| Operating Benefits | Restores proper DEF flow, prevents DEF leaks, supports SCR emissions performance, maintains OEM emissions compliance, reduces DEF system fault codes |
| Prop 65 | WARNING: Cancer and reproductive harm – www.P65Warnings.ca.gov |
| Condition | New |
