Wehrli 2004.5-2007 5.9L Cummins OEM Placement Coolant Tank Kit
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.
Replace the aging, yellowed plastic coolant reservoir on your 2004.5-2007 Dodge Ram 2500/3500 5.9L Cummins with the Wehrli OEM Placement Coolant Tank Kit (Manufacturer Part # WCF100542). Fabricated aluminum, powder coated in your choice of color, with a black anodized billet cap. It mounts in the factory location on the OEM points and installs with basic hand tools.
Why Choose the Wehrli OEM Placement Coolant Tank Kit?
- Fabricated aluminum, not plastic – the factory tank yellows and goes brittle. This one does neither.
- Black anodized billet cap included – CNC machined, not an extra purchase.
- Factory mounting points – fits a stock truck with no other modifications necessary.
- Matches the rest of the build – same powder coat range as Wehrli's intake kits, intercooler piping and thermostat housings.
- Built to OEM spec or better – a cosmetic upgrade that doesn't cost you reliability.
- Made in the USA.
Kit Includes
- Fabricated aluminum coolant tank
- Black anodized CNC machined billet aluminum cap
- Installation hardware
Installation Highlights
Mounts in the OEM coolant tank location using the factory mounting points. Installs with basic hand tools on an otherwise stock truck.
Fits These Models
2004.5, 2005, 2006 and 2007 Dodge Ram 2500 and 3500 with the 5.9L Cummins.
Specifications
- Construction: fabricated aluminum, custom powder coated
- Cap: black anodized CNC machined billet aluminum
- Mounting: OEM location and mounting points
- Replaces MOPAR part numbers: 55056493AA, 55056493AB
- Shipping weight: 12.0 lbs
- Package dimensions: 16" W x 16" H x 10" L
- Made in the USA
Key Features at a Glance
- Aluminum replaces yellowed plastic - the fix for a 20-year-old reservoir.
- Billet anodized cap included - not an add-on.
- OEM mounting points - bolt-in, basic hand tools.
- Custom powder coat finish - pick your color above.
Notes
- ⚠ Not compatible with 2003 or early 2004 trucks that have the coolant tank mounted on the radiator core support. Check where your tank sits before ordering — if it is on the core support, this is the wrong part.
- Lead time varies by color. WCFab Red, Gloss White and Gloss Black are stocked and ship in 3-5 business days. All other colors are made to order on a 10-15 business day lead time.
- Replacement caps are available separately: WCF100543 (black anodized) or WCF100472 (clear anodized).
FASS SKU: [ADD FASS SKU]
Manufacturer Part #: WCF100542
Questions? We’re Here to Help.
Have questions about upgrades for your 5.9L Cummins? Contact FASS Motorsports and we’ll get you dialed:
Phone: 636-429-7020
Email: info@fassmotorsports.com
This part fits the following vehicles:
| Years | Make & Model |
|---|---|
| 2004, 2007 | Dodge Ram 2500 |
| 2004, 2007 | Dodge Ram 3500 |
Fitment is listed by year, make and model. Some applications also depend on cab, bed, drivetrain or engine — if you are not sure, call 636-429-7020 or send us your vehicle details and we will confirm before you order.
