Product Description
The WEHRLI CUSTOM FAB WCF100251 2019-2023 6.7L HIGH OUTPUT (HO) CUMMINS UPPER COOLANT PIPE replaces the failure-prone factory rubber coolant hose with a durable fabricated aluminum upgrade designed specifically for Ram trucks equipped with the 6.7L High Output Cummins engine and upgraded HO cooling system. Built from precision-formed aluminum and finished with a premium powder-coat finish, this coolant pipe improves reliability while adding a clean, high-performance look to your engine bay.
The OEM rubber coolant hose is known to deteriorate over time due to heat cycles and pressure fluctuations. Wehrli Custom Fab engineered the WCF100251 as a direct bolt-on upgrade that eliminates the weak factory hose and replaces it with a rigid aluminum coolant pipe and high-quality silicone connections. This design provides improved durability, better long-term cooling reliability, and a much cleaner appearance under the hood.
This kit is specifically designed for 2019-2023 Ram trucks equipped with the High Output Cummins engine option, which uses a larger upgraded radiator system. The pipe installs using supplied silicone boots and stainless T-bolt clamps for a secure leak-free seal.
Key Features:
- Fabricated aluminum coolant pipe replacing the factory rubber hose
- Designed for 2019-2023 6.7L High Output Cummins engines
- Improves long-term cooling system reliability
- Includes high-quality silicone boots and stainless T-bolt clamps
- Powder-coated finish available in multiple colors
- Direct bolt-on installation using factory mounting locations
- Engine bay appearance upgrade with durable construction
Replaces OEM Mopar Part Numbers:
- 68359600AF
- 68359600AD
- 68359600AE
Fitment:
- 2019 Ram 2500 6.7L Cummins High Output
- 2020 Ram 2500 6.7L Cummins High Output
- 2021 Ram 2500 6.7L Cummins High Output
- 2022 Ram 2500 6.7L Cummins High Output
- 2023 Ram 2500 6.7L Cummins High Output
- 2019 Ram 3500 6.7L Cummins High Output
- 2020 Ram 3500 6.7L Cummins High Output
- 2021 Ram 3500 6.7L Cummins High Output
- 2022 Ram 3500 6.7L Cummins High Output
- 2023 Ram 3500 6.7L Cummins High Output
Important Fitment Note:
- This part is designed for High Output (HO) Cummins engines only
- HO engines use a larger radiator and different cooling configuration
- Standard Output Cummins trucks require WCF100223
- Designed for use with OEM RAM radiator; aftermarket radiators may cause fitment issues
FAQ
What does this coolant pipe upgrade replace?
This part replaces the factory rubber upper coolant hose on 2019-2023 Ram trucks equipped with the High Output Cummins engine. The aluminum pipe provides improved durability and resistance to heat and pressure compared to the stock hose.
Will this fit standard output Cummins engines?
No. The WCF100251 is designed specifically for trucks equipped with the High Output Cummins engine which uses a different cooling system configuration. Standard Output trucks require Wehrli part number WCF100223.
Does this include installation hardware?
Yes. The kit includes silicone couplers and stainless steel T-bolt clamps needed for installation.
Will this work with aftermarket radiators?
This coolant pipe is designed to work with the OEM factory RAM radiator. Some aftermarket radiators may cause fitment issues.
Is this mainly a performance upgrade or reliability upgrade?
It is primarily a reliability upgrade. The aluminum construction eliminates the weak factory rubber hose while improving engine bay aesthetics.
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100251 |
| UPC | Not listed by manufacturer |
| GTIN | Not listed by manufacturer |
| Shipping Info | Free shipping. Approx. 5 lb shipping weight. Estimated package size 28 x 8 x 8 inches. |
| Material | Fabricated aluminum |
| Finish | Powder coated (multiple color options) |
| Installation | Direct bolt-on replacement |
| Prop 65 | This product may contain chemicals known to the State of California to cause cancer or reproductive harm. See www.P65Warnings.ca.gov |