Wehrli 2017-2019 L5P Duramax 2500/3500 & 2019+ L5D Duramax OEM Placement Coolant Tank Kit - Bengal Grey
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
Fix a known failure point and clean up your engine bay in one shot with the WCFab Fabricated Aluminum Coolant Tank Kit for the 2017-2019 L5P Duramax 2500/3500 and 2019+ L5D Duramax 4500/5500/6500. The stock plastic reservoirs turn cloudy and yellow with age — and worse, their non-replaceable sensors are notorious for failing early and throwing false low coolant warnings, forcing you to buy an entire new reservoir assembly every time. This kit solves both problems with a custom fabricated aluminum tank and an easily serviceable float-type sensor.
Why Choose the WCFab Fabricated Aluminum Coolant Tank Kit?
- Fixes the Known Sensor Failure – Replaces the non-serviceable factory sensor with a high-quality, cost-effective float-type sensor that's easily serviceable for the life of your vehicle.
- No More Cloudy Plastic – Swaps the yellowed factory reservoir for a custom powder-coated fabricated aluminum tank with a sight glass for quick coolant level checks.
- OEM Placement, OEM Mounting Points – Mounts in the factory coolant tank location with no other modifications necessary.
- Billet Aluminum Cap – Black anodized, CNC-machined billet aluminum cap included.
- Fits Stock Trucks – Direct fit on unmodified trucks.
- Easy Installation – Installs with basic hand tools.
Kit Includes
- Fabricated aluminum coolant tank with sight glass
- Black anodized CNC machined billet aluminum cap
- Easily replaceable low coolant sensor
- Overflow hose
- Mounting hardware
Installation Highlights
Mounts in the OEM coolant tank location using factory mounting points — a straightforward install with basic hand tools and no other modifications required.
Fits These Models
- 2017-2019 L5P Duramax – 2500 / 3500
- 2019+ L5D Duramax – 4500 / 5500 / 6500
Key Features at a Glance
- Serviceable Float-Type Sensor - No more replacing the whole tank when a sensor fails
- Fabricated Aluminum + Powder Coat - Durable, great-looking upgrade over yellowed plastic
- Coolant Sight Glass - Check your level at a glance
- OEM Location Fit - Factory mounting points, no modifications
- Billet Aluminum Cap - Black anodized, CNC machined
Notes
- Designed for stock trucks in the OEM tank location — if you're running a custom or compound turbo setup, verify this OEM-placement tank (not a twin-turbo-style tank) is the right fit for your build.
Questions? We’re Here to Help.
Have questions about upgrades for your Duramax? Contact FASS Motorsports and we’ll get you dialed:
Phone: 636-429-7020
Email: info@fassmotorsports.com
