Fleece Performance Intake and Grid Heater Kit
Protect your investment with confidence with the most complete kit available from Fleece Performance!
ALL-NEW, Fleece Performance Engineering intake horn and grid heater kit for the 6.7L Cummins!! From the #1 trusted name in diesel performance comes the most complete kit available to address the OEM grid heater nut nightmare. The direct replacement, factory appearing intake horn and high-flow intake plate increase overall engine airflow and replace the OEM style grid heater with a robust coil heating element. For our cold weather customers who experience sustained temperatures below 23°F (-5°C), our cold weather kit adds an additional heating element – together this combination provides for proven startability down to -35° Celsius! Protect your investment with confidence with the latest from Fleece Performance.
Features:
- Eliminates the risk of engine damage from the OE style grid heater nut failure.
- Improves throttle response and airflow with lower intake restriction.
- Allows for reuse of the OE high pressure fuel lines and direct replacement options – no proprietary fuel line problems to worry about.
- The most complete kit on the market - includes all necessary hardware and gaskets.
- High flow coil heater along with a new high flex heater cable and new grounding cable.
- Factory appearance with the highest-level fit and finish.
- Precision machined, cast aluminum high flow intake horn and plate.
- 1/8” NPT port for sensor installation.
- Optional, secondary heater for cold weather startability down to -35 degrees Celsius.

Simplified and Safer Installation:
- One kit fits 2007.5-2024 2500/3500/4500/5500 6.7L Cummins engines – the broadest coverage of any kit on the market! We make it easy - no need to worry about being unsure if you’ve selected the right kit for your truck.
- No need to hunt down gaskets for the job – we include everything you need in the kit! Gaskets include intake runner, intake horn, throttle valve, EGR valve, and EGR crossover tube gaskets for both pickup and C&C model trucks.
- Clearly labeled hardware kits make it easy to identify and locate all the necessary parts for the installation.
- Labeled electrical connections make installation a breeze – no guessing which end goes where.
- No need for proprietary high pressure fuel lines – reuse your OE high pressure fuel lines or install direct replacement aftermarket options that are available nationwide from your favorite aftermarket supplier or OE reseller.
- Heater cables and connections incorporate protective boots, eliminating any risk of inadvertent contact with an energized circuit - no exposed connections like other options on the market.

Cold Weather Performance
Optimized heater design and placement in the intake air stream ensure you get the most efficient heating possible with a single, 700W heating element. For the coldest weather customers who experience sustained temperatures below 23°F (-5°C), our cold weather kit (FPE-CUMM-IAH-X2) adds an additional 700W heating element – together this combination has been tested and validated for startability down to -35° Celsius! Compared with other kits on the market, the Fleece Performance kit achieves the same levels of cold temperature startability with lower wattage and less strain on your grid heater relay!
Recommended Cold Weather Startability Configuration:
|
Sustained Temperature Fahrenheit (Celsius) |
Configuration |
Sustained Cold Startability Test |
|
32°F (0°C) |
Single Heater |
PASS |
|
23°F (-5°C) |
Single Heater |
PASS |
|
5°F (-15°C) |
Cold Weather – Dual Heater |
PASS |
|
-13°F (-25°C) |
Cold Weather – Dual Heater |
PASS |
|
-31°F (-35°C) |
Cold Weather – Dual Heater |
PASS |
** All testing was performed on a 2024 Ram 2500 with the block heater in use and sufficiently charged 12V batteries. Oil and weight: Freedom Series 100% Synthetic 10W-30
Application Notes
- One kit fits 2007.5-2024 2500/3500/4500/5500 6.7L Cummins engines – the broadest coverage of any kit on the market!
- Fits dual alternator equipped trucks
- CARB EO Pending
Warranty
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
IMPORTANT: We will not be shipping product between the dates of July 5th and July 11th. All orders will be processed and shipped the week of July 12th.
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