Fleece Performance Intake and Grid Heater Kit for 07-24 6.7L Cummins

 From the trusted name in diesel performance, this Fleece Performance Intake and Grid Heater Kit is engineered to permanently solve the OEM grid heater nut “nightmare” on 6.7L Cummins trucks. The factory grid heater design can allow a nut to loosen and drop into the engine, causing catastrophic damage; Fleece replaces that failure‑prone setup with a robust coil heating element placed directly in the intake air stream and a high‑flow intake plate and horn.

The cast aluminum intake horn and plate are precision‑machined to reduce restriction compared to the stock components, improving overall airflow and throttle response while maintaining a clean, factory‑style appearance under the hood. With the heater moved into the horn, you keep reliable cold‑weather startability without choking the intake, making this upgrade ideal for daily drivers, tow rigs, and tuned trucks alike.

Installation is simplified thanks to clearly labeled hardware bags and electrical connections, plus inclusive gaskets for the intake runner, intake horn, throttle valve, EGR valve, and EGR crossover tube (for both pickup and cab‑and‑chassis trucks). You can reuse your OE high‑pressure fuel lines or direct‑replacement aftermarket lines, so there’s no proprietary fuel line routing to worry about. Protective boots on heater cables and terminals help prevent accidental contact with energized circuits, further improving safety compared to many competing options.

For customers who regularly see temperatures below 23°F (−5°C), Fleece offers the optional cold‑weather kit (FPE‑CUMM‑IAH‑X2), which adds a second 700W heater element and has been validated for reliable starts down to −35°C with lower overall electrical load than some other solutions. Dual‑alternator trucks can still use the kit, but only the rear heater port is usable due to front‑side bracket clearance; the front port uses the supplied heater plug in these applications.

CARB EO is currently listed as pending for this intake/heater kit, so customers in emissions‑controlled states should confirm latest compliance status before installation on on‑road vehicles.

What’s Included

All‑in‑one kit contents (FPE‑CUMM‑IHK‑0724):

• High‑flow cast aluminum intake horn

• High‑flow intake plate

• Primary 700W coil‑style grid heater element

• High‑flex heater power cable

• New ground cable

• Complete labeled hardware pack (bolts, studs, washers)

• Intake runner gasket

• Intake horn gasket

• Throttle valve gasket

• EGR valve gasket

• EGR crossover tube gaskets (pickup and cab‑and‑chassis)

Optional cold weather add‑on kit (FPE‑CUMM‑IAH‑X2) adds:

• Second heater element (700W)

• Heater power cable

• Crush washer

• M5 lock nuts

OEM Cross Reference

• 68069387AA
• 4940345
• 68210071AA
• 5335502
• 4990718
• 5442953
• 68067166AA
• 68444458AA

Warranty, Install, And Notes

Fleece backs this intake and grid heater kit with a 1‑year limited parts warranty. The kit is designed as a direct‑fit solution, with typical installation times varying based on experience and whether the cold‑weather upgrade is added. Fleece and major distributors provide detailed installation instructions and videos to guide you through the process.

Common symptoms that drive owners to this kit include grid heater trouble codes, visible damage or corrosion on factory grid heater hardware, intake restriction complaints (high EGTs, lazy throttle response), and concern over the known grid heater nut drop issue.

Videos