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SKU: WCF100541-RED
Wehrli 2020-2025 Chevrolet GMC 6.6L L5P Duramax Upper Coolant Pipe - WCFab Red
Replace the failure-prone OEM rubber and plastic upper radiator hose on your 2020-2025 Chevrolet Silverado or GMC Sierra 2500/3500 HD with the Wehrli Custom Fab aluminum hard pipe in striking red powder coat finish. This direct-fit upgrade ensures reliable coolant flow under high-performance demands of the 6.6L L5P Duramax diesel engine. Engineered for seamless integration with OEM GM radiators to prevent leaks and overheating.
Key Features
- Aluminum Construction: Mandrel-bent 6061-T6 aluminum tubing resists cracking and delivers consistent coolant flow for lower engine temps
- Powder Coated Finish: Durable red powder coat resists corrosion heat and road debris while adding custom style to your engine bay
- Direct OEM Replacement: Bolt-on design matches factory routing and connections for easy swap without modifications
- Enhanced Durability: Eliminates weak rubber and plastic components prone to failure in heavy-duty towing and performance use
- Precision Fitment: Laser-cut flanges and CNC-machined fittings ensure leak-free seals on all L5P Duramax applications
Product Notes
- Designed exclusively for OEM GM radiators. aftermarket radiators may require adjustments for proper fit
- Coolant pipe only. includes all necessary O-rings and hardware for installation
- Ships ready-to-install with protective packaging to prevent damage
Installation Notes
- Professional installation recommended.
- Drain coolant system before removal. reuse OEM clamps if in good condition
- Compatible with factory thermostat housing and radiator neck. torque fittings to GM specs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2025 | GMC | Sierra 2500 HD | AT4 |
| 2024-2025 | GMC | Sierra 2500 HD | AT4X |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2025 | GMC | Sierra 2500 HD | Denali |
| 2024-2025 | GMC | Sierra 2500 HD | Denali Ultimate |
| 2022-2025 | GMC | Sierra 2500 HD | Pro |
| 2020-2025 | GMC | Sierra 2500 HD | SLE |
| 2020-2025 | GMC | Sierra 2500 HD | SLT |
| 2020-2025 | GMC | Sierra 3500 HD | AT4 |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2025 | GMC | Sierra 3500 HD | Denali |
| 2024-2025 | GMC | Sierra 3500 HD | Denali Ultimate |
| 2022-2025 | GMC | Sierra 3500 HD | Pro |
| 2020-2025 | GMC | Sierra 3500 HD | SLE |
| 2020-2025 | GMC | Sierra 3500 HD | SLT |
| 2021-2025 | Chevrolet | Silverado 2500 HD | Custom |
| 2020-2025 | Chevrolet | Silverado 2500 HD | High Country |
| 2020-2025 | Chevrolet | Silverado 2500 HD | LT |
| 2020-2025 | Chevrolet | Silverado 2500 HD | LTZ |
| 2020-2025 | Chevrolet | Silverado 2500 HD | WT |
| 2024-2025 | Chevrolet | Silverado 2500 HD | ZR2 |
| 2020-2025 | Chevrolet | Silverado 3500 HD | High Country |
| 2020-2025 | Chevrolet | Silverado 3500 HD | LT |
| 2020-2025 | Chevrolet | Silverado 3500 HD | LTZ |
| 2020-2025 | Chevrolet | Silverado 3500 HD | WT |
Why Choose Wehrli?
- Specializes in custom fabrication for Duramax diesel trucks with proven track record in heavy-duty applications
- Hand-built in the USA using high-grade materials for long-lasting performance
- Focuses on precision engineering to handle extreme towing and tuned power levels
Frequently Asked Questions
-
Q: Will this fit my 2025 L5P Duramax Silverado 3500HD?
A: Yes it fits all 2020-2025 Chevy Silverado and GMC Sierra 2500/3500 HD models equipped with the 6.6L L5P Duramax diesel and OEM radiator -
Q: What material is the pipe made from and how is it finished?
A: Constructed from strong 6061-T6 aluminum mandrel bent for smooth flow then powder coated in red for corrosion resistance and engine bay appeal -
Q: Is installation straightforward and what warranty is offered?
A: Bolt-on installation takes under 1 hour with basic tools. Wehrli provides a limited lifetime warranty against manufacturing defects
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Protective foam-lined box measuring 20 x 8 x 6 inches
- Weight: 2 lbs
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