Wehrli 2003-2007 5.9L Cummins Stage 2 High Flow Intake Bundle 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.
Everything between the fender and the cylinder head, in one box. The Wehrli Stage 2 High Flow Intake Bundle Kit (Manufacturer Part # WCF100680) for the 2003-2007 Dodge Ram 2500/3500 5.9L Cummins combines the 4" intake kit, the 3" hot side intercooler pipe, and the 3.5" cold side pipe with matching 3.5" intake horn — the cold side alone flows 60% better than stock.
Why Choose the Wehrli Stage 2 High Flow Intake Bundle Kit?
- 60% more flow on the cold side – Wehrli's measured figure. The factory cast horn necks to under 1.5" wide, and this kit deletes it.
- Three upgrades, one order – intake, hot side and cold side plus horn, bought together instead of three separate parts.
- Kills boost leaks before they strand you – the aging OEM plastic pipe and boots are the parts that let go on a worked 5.9L.
- Quicker spool, lower EGTs – the point of opening the whole tract rather than one section.
- 14 gauge mandrel bent piping and billet CNC components – fabricated in the USA.
- Dry filter with Outerwears cover – hydrophobic pre-filter protecting the turbo.
- Custom powder coat – the whole assembly in your choice of Wehrli's colors.
Kit Includes
- 4" air intake kit (WCF100346)
- Dry air filter with Outerwears pre-filter cover
- 3" hot side (passenger) intercooler pipe (WCF100544)
- 3.5" cold side (driver) intercooler pipe with 3.5" high flow intake horn (WCF100528)
- Silicone boots, stainless T-bolt clamps and installation hardware
Fits These Models
2003, 2004, 2004.5, 2005, 2006 and 2007 Dodge Ram 2500 and 3500 with the 5.9L Cummins.
Specifications
- Intake: 4" diameter
- Hot side pipe: 3" diameter
- Cold side pipe and horn: 3.5" diameter, 60% greater flow than stock
- Construction: 14 ga. mandrel bent aluminum with CNC machined billet components
- Shipping weight: 40.0 lbs
- Package dimensions: 24" W x 12" H x 36" L
- Finish: custom powder coat, color selected above
- Made in the USA
Key Features at a Glance
- 60% more flow on the cold side - the OEM horn is the bottleneck.
- Intake, both pipes and the horn - complete Stage 2 package.
- 14 ga. mandrel bent aluminum - built in the USA.
- Dry filter with Outerwears cover - protects the turbo.
- Custom powder coat finish - pick your color above.
Notes
- ⚠ 2003-2004 trucks require trimming. The 3.5" intake horn is significantly larger than the stock piece, and its smooth radius bend means the plastic shroud over the throttle assembly on these earlier trucks must be trimmed to fit. 2005-2007 trucks are unaffected.
- Lead time varies by color. WCFab Red with the standard brushed tag is stocked and ships in 3-5 business days. All other colors are made to order on a 10-15 business day lead time.
- Stage 1 (WCF100329) is the same charge piping and horn without the 4" intake kit.
FASS SKU: [ADD FASS SKU]
Manufacturer Part #: WCF100680
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 |
|---|---|
| 2003, 2007 | Dodge Ram 2500 |
| 2003, 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.
