The GLOWOLF 6.7L Cummins intake manifold is engineered for 2007-2026 Ram 2500 and 3500 owners who demand more from their truck — more airflow, more cold-start reliability, and more peace of mind. Independently designed from the ground up (not another copy of the same manifold everyone else sells), the GLOWOLF manifold delivers up to 6.7% more airflow than stock, verified through physical bench testing with industrial-grade equipment. Two heating coils come pre-installed on the intercooler side — positioned so that even in a worst-case scenario, nothing falls into your engine. Available in four color-matched finishes with a dedicated heater plate that replaces your factory grid heater. No compromises, no cut corners.
Physical bench testing with industrial-grade equipment proves what CFD predicted — GLOWOLF flows more air than stock and the industry leader at every pressure point. The biggest advantage shows up exactly where you need it: high-load conditions like towing, hill climbs, and hard acceleration.
Two heating coils come pre-installed on the intercooler-side positions with included wiring harness. Need maximum cold-start power? A third mounting position on the engine side lets you upgrade to triple-coil capacity. Most manifolds give you one coil. We give you two — and the option for three.
Every other manifold mounts heating coils on the engine side — directly above your cylinders. GLOWOLF mounts both included coils on the intercooler side. If a coil ever loosens, it falls outward into the intake tract, not downward into your engine. Same cold-start performance. Fundamentally safer.
Black, Silver, Red, or Blue — and the heater plate matches the manifold every time. No mismatched components, no "close enough" color pairing. Your engine bay looks intentional, not assembled from spare parts.
Independently Engineered — Not a Copy: Every other aftermarket 6.7L Cummins intake manifold on the market is a derivative of one original design. GLOWOLF is the only independently engineered alternative. Purpose-built from clean-sheet CAD, optimized through CFD simulation, and validated on a physical flow bench.
Included Heater Plate: Replaces your factory grid heater with a precision-machined plate that integrates seamlessly with the manifold. Maintains a clean intake path while retaining heating capability through the dual coil system.
Full Power Wiring Harness Included: Dedicated wiring connects both heating coils in series — no sourcing additional connectors, no guesswork. Everything needed for dual-coil operation ships in the box.
Your factory intake manifold was designed to meet a price point and an emissions spec — not to move air efficiently. The stock casting has internal restrictions, tight radius bends, and a flow path that creates turbulence long before the air reaches your cylinders. The result: your turbo works harder to push the same volume of air, intake air temperatures climb under load, and your engine leaves horsepower on the table.
The factory grid heater bolt is the other half of this problem. That single bolt threads through the intake tract, and when it fatigues — and it does — it drops directly into the engine. We've all seen the forum posts and the repair bills.
The GLOWOLF manifold addresses both issues. The internal flow path was redesigned from scratch — larger, smoother, with optimized bell-mouth entries that reduce turbulence. CFD simulation at 1.8 bar boost pressure (stock turbo output) confirmed up to 12.76% more mass airflow versus the industry-leading alternative at 3000 RPM. Then we backed it up with physical bench testing: an industrial centrifugal fan pushing air through the manifold at controlled pressure differentials, with precision sensors logging flow rates at 200 samples per second.
The numbers speak for themselves. At low pressure differentials (cruising), GLOWOLF flows about 4% more than stock. At high pressure differentials (towing, hard acceleration, high boost) — that's where the gap opens up to 6.7%. More airflow at high load means your turbo doesn't work as hard, EGTs stay more manageable, and your truck pulls like it should have from the factory.
Meanwhile, the included heater plate eliminates the factory grid heater bolt entirely — removing the failure point at the source. And the two included heating coils mount on the intercooler side, so even if the unthinkable happens, your engine stays protected. It's not just a performance upgrade. It's a reliability upgrade.
Yes. The GLOWOLF intake manifold fits all 2007-2026 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins engine, regardless of transmission type (manual or automatic) or cab configuration.
Yes. The included heater plate replaces the factory grid heater. The two included heating coils provide cold-start heating capability through the new plate, so you retain cold-weather functionality — just with a safer, more efficient design.
If you're comfortable with basic hand tools and have experience removing and installing intake components, this is a DIY-friendly installation. The manifold uses factory mounting points — no drilling or permanent modifications required. Typical install time is 2-3 hours.
No. Tuning is not required for installation or operation. However, custom tuning may optimize the performance gains from the improved airflow, particularly if you have other modifications (larger turbo, injectors, etc.).
The two included coils mount on the intercooler side of the manifold — the safest position. The third mounting position is on the engine side (same location as competitor manifolds). If you want maximum cold-start heating power, you can purchase an additional coil and install it in the third position. Most owners find two coils sufficient for cold-weather starts.
Safety. When a heating coil is mounted on the engine side, a failed or loosened coil can fall directly into the engine cylinders — causing catastrophic damage. By mounting on the intercooler side, even in a worst-case scenario, a loosened component falls outward into the intake tract where it can be caught and removed without engine damage.
No. GLOWOLF independently engineered this manifold from a clean-sheet CAD design. Every other aftermarket 6.7L Cummins intake manifold on the market is a derivative of one original design. This is the only independently designed alternative — optimized through CFD simulation and validated through physical bench testing.
Airflow testing was conducted using an industrial centrifugal fan (≥7.5kW, capable of 1000+ CFM at 25 in/H₂O), a high-precision differential pressure transmitter (±0.1% FS accuracy), and a mass flow meter with data acquisition at 200Hz. Three manifolds were tested under identical conditions: the factory OE manifold, an industry-leading aftermarket manifold, and the GLOWOLF manifold. Results show GLOWOLF outperforms both at every pressure differential tested, with the largest advantage at high-load conditions.
Yes. GLOWOLF accepts returns within 30 days of delivery for unused products in original packaging. Review our Return Policy page for full details.
No. This product is designed and sold for off-road and competition use only. It replaces a factory emissions component (grid heater) and is not legal for use on emissions-controlled vehicles on public highways. Check your local and state regulations before purchasing.
